UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF

REGISTERED MANAGEMENT INVESTMENT COMPANIES

Investment Company Act file number 811-00203

MASSACHUSETTS INVESTORS TRUST

(Exact name of registrant as specified in charter)

111 Huntington Avenue, Boston, Massachusetts 02199

(Address of principal executive offices) (Zip code)

Christopher R. Bohane

Massachusetts Financial Services Company

111 Huntington Avenue

Boston, Massachusetts 02199

(Name and address of agents for service)

Registrant’s telephone number, including area code: (617) 954-5000

Date of fiscal year end: December 31

Date of reporting period: December 31, 2020


ITEM 1.

REPORTS TO STOCKHOLDERS.

Item 1(a):


Annual Report
December 31, 2020
Massachusetts
Investors Trust
MIT-ANN




Massachusetts
Investors Trust
CONTENTS

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2

3

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9

12

17

19

20

21

29

41

43

48

52

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52

52

54
    

back cover
The report is prepared for the general information of shareholders. It is authorized for distribution to prospective investors only when preceded or accompanied by a current prospectus.
NOT FDIC INSURED  •  MAY LOSE VALUE  •  NO BANK GUARANTEE


Table of Contents


Table of Contents
LETTER FROM THE CEO
Dear Shareholders:
Markets experienced dramatic swings this year as the coronavirus pandemic brought the global economy to a standstill for several months early in the year. The speedy development of vaccines and therapeutics later brightened the economic and market outlook, but a great deal of uncertainty remains as case counts remain high, new variants of the virus are appearing and questions persist over how fast the vaccine can be made widely available. In the United States, political uncertainty eased after former Vice President Joe Biden won the presidential election and the Democrats gained control of a closely divided Senate.
Global central banks have taken aggressive steps to cushion the economic and market fallout related to the virus, and governments are deploying unprecedented levels of fiscal support. Additional U.S. stimulus is anticipated with the Democrats in the White House and in control of both houses of Congress. The measures already put in place have helped build a supportive environment and are encouraging economic recovery; however, if markets disconnect from fundamentals, they can sow the seeds of instability. As such, dramatic increases in speculative retail trading bear watching.
In the aftermath of the crisis, we could see societal changes as households, businesses, and governments adjust to a new reality, and any such alterations could affect the investment landscape. For investors, events such as the COVID-19 outbreak demonstrate the importance of having a deep understanding of company fundamentals, and we have built our global research platform to do just that.
At MFS®, we put our clients’ assets to work responsibly by carefully navigating the increasing complexity of our global markets and economies. Guided by our long-term philosophy and adhering to our commitment to sustainable investing, we tune out the noise and aim to uncover what we believe are the best, most durable investment opportunities in the market. Our unique global investment platform combines collective expertise, long-term discipline and thoughtful risk management to create sustainable value for investors.
Respectfully,
Michael W. Roberge
Chief Executive Officer
MFS Investment Management
February 16, 2021
The opinions expressed in this letter are subject to change and may not be relied upon for investment advice. No forecasts can be guaranteed.
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Table of Contents
Portfolio Composition
Portfolio structure
Top ten holdings
Microsoft Corp. 5.0%
Alphabet, Inc., “A” 4.1%
Apple, Inc. 2.5%
JPMorgan Chase & Co. 2.5%
Johnson & Johnson 2.4%
Visa, Inc., “A” 2.4%
Medtronic PLC 2.3%
Mastercard, Inc., “A” 2.2%
Honeywell International, Inc. 2.2%
Comcast Corp., “A” 2.1%
GICS equity sectors (g)
Information Technology 24.4%
Health Care 18.1%
Communication Services 11.7%
Financials 11.2%
Consumer Discretionary 9.1%
Consumer Staples 8.3%
Industrials 6.8%
Materials 4.5%
Real Estate 3.1%
Energy 1.6%
Utilities 0.6%
 
(g) The Global Industry Classification Standard (GICS®) was developed by and/or is the exclusive property of MSCI, Inc. and S&P Global Market Intelligence Inc. (“S&P Global Market Intelligence”). GICS is a service mark of MSCI and S&P Global Market Intelligence and has been licensed for use by MFS. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. Please see the Statement of Assets and Liabilities for additional information related to the fund’s cash position and other assets and liabilities.
Percentages are based on net assets as of December 31, 2020.
The portfolio is actively managed and current holdings may be different.
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Table of Contents
Management Review
Summary of Results
For the twelve months ended December 31, 2020, Class A shares of the Massachusetts Investors Trust (fund) provided a total return of 14.12%, at net asset value. This compares with a return of 18.40% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index (S&P 500 Index).
Market Environment
Markets experienced an extraordinarily sharp selloff early in the period and, in many cases, an unusually rapid recovery later. Central banks and fiscal authorities undertook astonishing levels of stimulus to offset the economic effects of government-imposed social-distancing measures implemented to slow the spread of the COVID-19 virus. At this point, the global economy looks to have experienced the shortest — albeit the deepest and steepest — recession in the postwar period. However, the recovery remains subject to more than the usual number of uncertainties due to questions about the evolution of the virus, what its continued impact will be and how quickly vaccines to guard against it can be manufactured and distributed at scale. There are also worries over the public's willingness to be inoculated.
Around the world, central banks responded quickly and massively to the crisis with programs to improve liquidity and support markets. These programs proved largely successful in helping to restore market function, ease volatility and stimulate a continued market rebound. Late in the period, the US Federal Reserve adopted a new, flexible, average-inflation-targeting framework, which is expected to result in the federal funds rate remaining at low levels longer than under its previous model. In developed countries, monetary easing measures were complemented by unusually large fiscal stimulus initiatives. Due to relatively manageable external liabilities and balances of payments in many countries and persistently low inflation, even emerging market countries were able to implement countercyclical policies — a departure from the usual market-dictated response to risk-off crises.
Compounding market uncertainty earlier in the pandemic was a crash in the price of crude oil due to a sharp drop in global demand and a disagreement between Saudi Arabia and Russia over production cuts, which resulted in an oil price war. The subsequent decline in prices undercut oil exporters, many of which are in emerging markets, as well as a large segment of the high-yield credit market. The OPEC+ group later agreed on output cuts, with shale oil producers in the US also decreasing production, which, along with the gradual reopening of some major economies and the resultant boost in demand, helped stabilize the price of crude oil.
In the immediate aftermath of the market disruption that accompanied the initial phases of the pandemic, many companies that had added significant leverage to their balance sheets in recent years by borrowing to fund dividend payments and stock buybacks halted those activities, and some companies were forced to recapitalize. As markets and the economy stabilized later in the period, in many cases dividend payments and buybacks resumed. Conversely, some companies found themselves flush with liquidity, having borrowed preemptively during the worst of the crisis only to end up with excess cash on their balance sheets.
3


Table of Contents
Management Review - continued
Detractors from Performance
Security selection in the information technology sector detracted from performance relative to the S&P 500 Index. Within this sector, the fund's underweight position in computer and personal electronics maker Apple, and not holding shares of computer graphics processor maker NVIDIA and digital payment technology developer PayPal, hurt relative returns. Despite headwinds related to COVID-19, the share price of Apple appreciated as product demand recovered more rapidly than expected and the shift toward work-from-home and remote learning supported strong iPhone and iPad sales. Additionally, shares of Apple reacted positively to the announcement of a new line of its flagship iPhone product with 5G compatibility.
Stock selection and, to a lesser extent, an underweight position in the consumer discretionary sector also weakened relative returns over the reporting period. Here, not holding shares of strong-performing internet retailer Amazon.com hindered relative results as Amazon's share price rose over the reporting period, driven by increased demand for cloud-computing services and at-home retail demand.
Stocks in other sectors that were among the fund's top relative detractors included holding shares of natural gas and petrochemical products manufacturer Enterprise Products Partners(b) and food processing company Danone(b) (France), as well as the timing of the fund's overweight positions in oil field services company Schlumberger(h) and energy exploration and production company EOG Resources(h). Lastly, the fund's overweight positions in both medical technology company Becton, Dickinson & Co. and financial services firm Bank of America also held back relative returns.
Contributors to Performance
Stock selection in both the financials and communication services sectors benefited performance relative to the benchmark over the reporting period. Within the financials sector, not holding shares of diversified financial services firm Wells Fargo supported relative results. The stock price of Wells Fargo declined early in the reporting period, along with many other financial services stocks, as bond yields collapsed, notably on US 10-year Treasury bonds, and concerns about increased potential loan losses arose as global economic activity ground to a halt in efforts to stem the spread of the COVID-19 virus. Within the communication services sector, not holding shares of telecommunication services provider AT&T contributed to relative returns as the company's stock price declined with broader equity markets in the spring, but never recovered, as lower advertising revenue and foreign exchange headwinds weighed on the company's earnings results.
An underweight position in the weak-performing utilities sector also lifted relative performance. However, there were no individual stocks within this sector, either in the fund or in the benchmark, that were among the fund's top relative contributors over the reporting period.
Elsewhere, not holding shares of integrated oil and gas company Exxon Mobil, energy company Chevron and aerospace company Boeing added to relative results. Overweight positions in specialty rural lifestyle retailer Tractor Supply Company, life sciences supply company Thermo Fisher Scientific, healthcare equipment manufacturer Danaher, retail giant Target and software company Adobe Systems further contributed to relative performance.
4


Table of Contents
Management Review - continued
During the reporting period, the fund's relative currency exposure, resulting primarily from differences between the fund's and the benchmark's exposures to holdings of securities denominated in foreign currencies, was a contributor to relative performance. All of MFS' investment decisions are driven by the fundamentals of each individual opportunity and as such, it is common for our portfolios to have different currency exposure than the benchmark.
Respectfully,
Portfolio Manager(s)
Kevin Beatty, Alison O’Neill Mackey, and Ted Maloney
Note to Shareholders: Effective September 30, 2021, Kevin Beatty will no longer be a Portfolio Manager of the fund.
(b) Security is not a benchmark constituent.
(h) Security was not held in the portfolio at period end.
The views expressed in this report are those of the portfolio manager(s) only through the end of the period of the report as stated on the cover and do not necessarily reflect the views of MFS or any other person in the MFS organization. These views are subject to change at any time based on market or other conditions, and MFS disclaims any responsibility to update such views. These views may not be relied upon as investment advice or an indication of trading intent on behalf of any MFS portfolio. References to specific securities are not recommendations of such securities, and may not be representative of any MFS portfolio’s current or future investments.
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Table of Contents
Performance Summary THROUGH 12/31/20
The following chart illustrates a representative class of the fund’s historical performance in comparison to its benchmark(s). Performance results include the deduction of the maximum applicable sales charge and reflect the percentage change in net asset value, including reinvestment of dividends and capital gains distributions. The performance of other share classes will be greater than or less than that of the class depicted below. Benchmarks are unmanaged and may not be invested in directly. Benchmark returns do not reflect sales charges, commissions or expenses. (See Notes to Performance Summary.)
Performance data shown represents past performance and is no guarantee of future results. Investment return and principal value fluctuate so your shares, when sold, may be worth more or less than the original cost; current performance may be lower or higher than quoted. The performance shown does not reflect the deduction of taxes, if any, that a shareholder would pay on fund distributions or the redemption of fund shares.
Growth of a Hypothetical $10,000 Investment
6


Table of Contents
Performance Summary  - continued
Total Returns through 12/31/20
Average annual without sales charge
Share Class Class Inception Date 1-yr 5-yr 10-yr Life (t)
A 7/15/24 14.12% 13.89% 12.65% N/A
B 9/07/93 13.26% 13.02% 11.79% N/A
C 7/01/96 13.28% 13.02% 11.79% N/A
I 1/02/97 14.39% 14.16% 12.91% N/A
R1 4/01/05 13.23% 13.01% 11.79% N/A
R2 10/31/03 13.81% 13.58% 12.35% N/A
R3 4/01/05 14.09% 13.86% 12.63% N/A
R4 4/01/05 14.38% 14.15% 12.91% N/A
R6 6/01/12 14.50% 14.25% N/A 14.78%
529A 7/31/02 14.06% 13.83% 12.59% N/A
529B 7/31/02 14.29% 13.46% 11.98% N/A
529C 7/31/02 13.20% 12.96% 11.73% N/A
Comparative benchmark(s)
         
Standard & Poor’s 500 Stock Index (f) 18.40% 15.22% 13.88% N/A
Average annual with sales charge
         
A
With Initial Sales Charge (5.75%)
7.56% 12.55% 11.98% N/A
B
With CDSC (Declining over six years from 4% to 0%) (v)
9.26% 12.77% 11.79% N/A
C
With CDSC (1% for 12 months) (v)
12.28% 13.02% 11.79% N/A
529A
With Initial Sales Charge (5.75%)
7.50% 12.49% 11.93% N/A
529B
With CDSC (Declining over six years from 4% to 0%) (v)
10.29% 13.22% 11.98% N/A
529C
With CDSC (1% for 12 months) (v)
12.20% 12.96% 11.73% N/A
CDSC – Contingent Deferred Sales Charge.
Class I, R1, R2, R3, R4, and R6 shares do not have a sales charge.
(f) Source: FactSet Research Systems Inc.
(t) For the period from the class inception date through the stated period end (for those share classes with less than 10 years of performance history). No comparative benchmark performance information is provided for “life” periods. (See Notes to Performance Summary.)
(v) Assuming redemption at the end of the applicable period.
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Performance Summary  - continued
Benchmark Definition(s)
Standard & Poor's 500 Stock Index(g) – a market capitalization-weighted index of 500 widely held equity securities, designed to measure broad U.S. equity performance.
It is not possible to invest directly in an index.
(g) “Standard & Poor's®” and “S&P®” are registered trademarks of Standard & Poor's Financial Services LLC (“S&P”) and Dow Jones is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones”) and have been licensed for use by S&P Dow Jones Indices LLC and sublicensed for certain purposes by MFS. The S&P 500® is a product of S&P Dow Jones Indices LLC, and has been licensed for use by MFS. MFS's product(s) is not sponsored, endorsed, sold, or promoted by S&P Dow Jones Indices LLC, Dow Jones, S&P, or their respective affiliates, and neither S&P Dow Jones Indices LLC, Dow Jones, S&P, nor their respective affiliates make any representation regarding the advisability of investing in such product(s).
Notes to Performance Summary
Class 529 shares are only available in conjunction with qualified tuition programs, such as the MFS 529 Savings Plan. There also is an additional fee, which is detailed in the program description, on qualified tuition programs. If this fee was reflected, the performance for Class 529 shares would have been lower. This annual fee is waived for Oregon residents and for those accounts with assets of $25,000 or more.
Average annual total return represents the average annual change in value for each share class for the periods presented. Life returns are presented where the share class has less than 10 years of performance history and represent the average annual total return from the class inception date to the stated period end date. As the fund's share classes may have different inception dates, the life returns may represent different time periods and may not be comparable. As a result, no comparative benchmark performance information is provided for life periods.
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable. Please see the prospectus and financial statements for complete details.
Performance results do not include adjustments made for financial reporting purposes in accordance with U.S. generally accepted accounting principles and may differ from amounts reported in the financial highlights.
From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.
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Table of Contents
Expense Table
Fund expenses borne by the shareholders during the period,
July 1, 2020 through December 31, 2020
As a shareholder of the fund, you incur two types of costs: (1) transaction costs, including sales charges (loads) on certain purchase or redemption payments, and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. This example is intended to help you understand your ongoing costs (in dollars) of investing in the fund and to compare these costs with the ongoing costs of investing in other mutual funds.
The example is based on an investment of $1,000 invested at the beginning of the period and held for the entire period July 1, 2020 through December 31, 2020.
Actual Expenses
The first line for each share class in the following table provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number in the first line under the heading entitled “Expenses Paid During Period” to estimate the expenses you paid on your account during this period.
Hypothetical Example for Comparison Purposes
The second line for each share class in the following table provides information about hypothetical account values and hypothetical expenses based on the fund’s actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not the fund’s actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in the fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds.
Please note that the expenses shown in the table are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads). Therefore, the second line for each share class in the table is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher.
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Expense Table - continued
Share
Class
  Annualized
Expense
Ratio
Beginning
Account Value
7/01/20
Ending
Account Value
12/31/20
Expenses
Paid During
Period (p)
7/01/20-12/31/20
A Actual 0.70% $1,000.00 $1,200.69 $3.87
Hypothetical (h) 0.70% $1,000.00 $1,021.62 $3.56
B Actual 1.45% $1,000.00 $1,196.23 $8.00
Hypothetical (h) 1.45% $1,000.00 $1,017.85 $7.35
C Actual 1.45% $1,000.00 $1,196.13 $8.00
Hypothetical (h) 1.45% $1,000.00 $1,017.85 $7.35
I Actual 0.45% $1,000.00 $1,201.75 $2.49
Hypothetical (h) 0.45% $1,000.00 $1,022.87 $2.29
R1 Actual 1.45% $1,000.00 $1,196.02 $8.00
Hypothetical (h) 1.45% $1,000.00 $1,017.85 $7.35
R2 Actual 0.95% $1,000.00 $1,198.69 $5.25
Hypothetical (h) 0.95% $1,000.00 $1,020.36 $4.82
R3 Actual 0.70% $1,000.00 $1,200.45 $3.87
Hypothetical (h) 0.70% $1,000.00 $1,021.62 $3.56
R4 Actual 0.45% $1,000.00 $1,202.11 $2.49
Hypothetical (h) 0.45% $1,000.00 $1,022.87 $2.29
R6 Actual 0.37% $1,000.00 $1,202.30 $2.05
Hypothetical (h) 0.37% $1,000.00 $1,023.28 $1.88
529A Actual 0.74% $1,000.00 $1,200.12 $4.09
Hypothetical (h) 0.74% $1,000.00 $1,021.42 $3.76
529B Actual 0.74% $1,000.00 $1,200.06 $4.09
Hypothetical (h) 0.74% $1,000.00 $1,021.42 $3.76
529C Actual 1.50% $1,000.00 $1,195.60 $8.28
Hypothetical (h) 1.50% $1,000.00 $1,017.60 $7.61
(h) 5% class return per year before expenses.
(p) “Expenses Paid During Period” are equal to each class’s annualized expense ratio, as shown above, multiplied by the average account value over the period, multiplied by 184/366 (to reflect the one-half year period). Expenses paid do not include any applicable sales charges (loads). If these transaction costs had been included, your costs would have been higher.
Notes to Expense Table
For the period from July 1, 2020 through December 31, 2020, the distribution fee for Class 529B was not imposed. Had the distribution fee been imposed throughout the entire six month period, the annualized expense ratio, the actual expenses paid during the period, and the hypothetical expenses paid during the period would have been approximately 1.49%, $8.24, and $7.56 for Class 529B. See Note 3 in the Notes to Financial Statements for additional information.
Each class with a Rule 12b-1 service fee is subject to a rebate of a portion of such fee. Such rebates are included in the expense ratios above. For Class 529A and Class 529B shares, this
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Table of Contents
Expense Table - continued
rebate reduced the expense ratios above by 0.01%. See Note 3 in the Notes to Financial Statements for additional information.
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Table of Contents
Portfolio of Investments
12/31/20
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Common Stocks – 99.4%
Aerospace – 2.8%  
Honeywell International, Inc.       658,636  $   140,091,877
Raytheon Technologies Corp.       594,687    42,526,068
           $182,617,945
Alcoholic Beverages – 2.4%  
Diageo PLC   2,092,823  $    82,710,678
Pernod Ricard S.A.       390,326    74,768,793
           $157,479,471
Apparel Manufacturers – 2.5%  
LVMH Moet Hennessy Louis Vuitton SE       155,550  $    97,085,137
NIKE, Inc., “B”       464,223    65,673,628
           $162,758,765
Biotechnology – 1.3%  
Illumina, Inc. (a)       145,073  $    53,677,010
Vertex Pharmaceuticals, Inc. (a)       139,092    32,873,003
            $86,550,013
Brokerage & Asset Managers – 2.9%  
Blackstone Group, Inc.       739,138  $    47,903,534
Charles Schwab Corp.       795,651    42,201,329
NASDAQ, Inc.       741,455    98,420,737
           $188,525,600
Business Services – 4.5%  
Accenture PLC, “A”       344,493  $    89,985,016
Amdocs Ltd.   1,064,770    75,524,136
Fidelity National Information Services, Inc.       888,980   125,755,111
           $291,264,263
Cable TV – 2.5%  
Cable One, Inc.         9,413  $    20,969,529
Comcast Corp., “A”   2,620,213   137,299,161
           $158,268,690
Chemicals – 0.9%  
PPG Industries, Inc.       379,166  $    54,683,321
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Portfolio of Investments – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Computer Software – 8.1%  
Adobe Systems, Inc. (a)       232,903  $   116,479,448
Microsoft Corp.   1,461,976   325,172,702
salesforce.com, inc. (a)       371,048    82,569,312
           $524,221,462
Computer Software - Systems – 2.6%  
Apple, Inc.   1,239,773  $   164,505,479
Construction – 1.3%  
Sherwin-Williams Co.       115,738  $    85,057,014
Consumer Products – 2.6%  
Colgate-Palmolive Co.       889,102  $    76,027,112
Estee Lauder Cos., Inc., “A”       140,237    37,329,687
Kimberly-Clark Corp.       412,089    55,561,960
           $168,918,759
Containers – 1.4%  
Crown Holdings, Inc. (a)       870,704  $    87,244,541
Electrical Equipment – 3.3%  
AMETEK, Inc.       669,755  $    81,000,170
Fortive Corp.       974,952    69,046,100
TE Connectivity Ltd.       542,083    65,629,989
           $215,676,259
Electronics – 3.6%  
Analog Devices, Inc.       471,994  $    69,727,674
Applied Materials, Inc.       557,084    48,076,349
Texas Instruments, Inc.       697,952   114,554,862
           $232,358,885
Energy - Independent – 0.6%  
ConocoPhillips       881,269  $    35,241,947
Food & Beverages – 2.1%  
Danone S.A.   1,142,437  $    75,030,588
Mondelez International, Inc.       973,146    56,899,846
           $131,930,434
General Merchandise – 1.3%  
Dollar General Corp.       381,989  $    80,332,287
Health Maintenance Organizations – 1.0%  
Cigna Corp.       308,745  $    64,274,534
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Portfolio of Investments – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Insurance – 1.0%  
Chubb Ltd.       421,276  $    64,842,802
Internet – 7.5%  
Alphabet, Inc., “A” (a)       149,259  $   261,597,294
Alphabet, Inc., “C” (a)        55,456    97,152,257
Facebook, Inc., “A” (a)       467,983   127,834,236
           $486,583,787
Leisure & Toys – 1.7%  
Electronic Arts, Inc.       774,153  $   111,168,371
Major Banks – 6.2%  
Bank of America Corp.   4,360,382  $   132,163,178
Goldman Sachs Group, Inc.       404,022   106,544,642
JPMorgan Chase & Co.   1,260,733   160,201,342
           $398,909,162
Medical & Health Technology & Services – 1.8%  
ICON PLC (a)       196,907  $    38,392,927
PRA Health Sciences, Inc. (a)       640,810    80,383,206
           $118,776,133
Medical Equipment – 7.5%  
Becton, Dickinson and Co.       487,982  $   122,102,856
Danaher Corp.       417,300    92,699,022
Medtronic PLC   1,267,923   148,524,500
Thermo Fisher Scientific, Inc.       259,273   120,764,178
           $484,090,556
Natural Gas - Pipeline – 1.1%  
Enterprise Products Partners LP   3,577,256  $    70,078,445
Network & Telecom – 1.2%  
Equinix, Inc., REIT       111,805  $    79,848,895
Other Banks & Diversified Financials – 5.7%  
Mastercard, Inc., “A”       401,509  $   143,314,622
Truist Financial Corp.   1,486,075    71,227,575
Visa, Inc., “A”       704,893   154,181,246
           $368,723,443
Pharmaceuticals – 6.4%  
Eli Lilly & Co.       591,881  $    99,933,188
Johnson & Johnson       998,034   157,070,591
Merck & Co., Inc.   1,161,935    95,046,283
14


Table of Contents
Portfolio of Investments – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Pharmaceuticals – continued  
Zoetis, Inc.       380,159  $    62,916,314
           $414,966,376
Railroad & Shipping – 1.5%  
Canadian National Railway Co.       880,297  $    96,700,625
Restaurants – 0.9%  
Starbucks Corp.       519,887  $    55,617,511
Specialty Chemicals – 0.9%  
DuPont de Nemours, Inc.       845,665  $    60,135,238
Specialty Stores – 5.7%  
Costco Wholesale Corp.       200,081  $    75,386,519
Home Depot, Inc.       378,479   100,531,592
Target Corp.       574,472   101,411,542
Tractor Supply Co.       636,308    89,452,179
           $366,781,832
Telecommunications - Wireless – 1.8%  
American Tower Corp., REIT       526,818  $   118,249,568
Trucking – 0.2%  
Old Dominion Freight Line, Inc.        55,966  $    10,923,444
Utilities - Electric Power – 0.6%  
American Electric Power Co., Inc.       482,024  $    40,138,139
Total Common Stocks (Identified Cost, $3,019,048,584)   $6,418,443,996
Investment Companies (h) – 0.7%
Money Market Funds – 0.7%  
MFS Institutional Money Market Portfolio, 0.1% (v) (Identified Cost, $41,984,616)     41,984,616  $    41,984,616
Other Assets, Less Liabilities – (0.1)%       (3,238,907)
Net Assets – 100.0% $6,457,189,705
    
(a) Non-income producing security.      
(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $41,984,616 and $6,418,443,996, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
15


Table of Contents
Portfolio of Investments – continued
The following abbreviations are used in this report and are defined:
REIT Real Estate Investment Trust
See Notes to Financial Statements
16


Table of Contents
Financial Statements
Statement of Assets and Liabilities
At 12/31/20
This statement represents your fund’s balance sheet, which details the assets and liabilities comprising the total value of the fund.
Assets  
Investments in unaffiliated issuers, at value (identified cost, $3,019,048,584) $6,418,443,996
Investments in affiliated issuers, at value (identified cost, $41,984,616) 41,984,616
Receivables for  
Fund shares sold 3,368,315
Dividends 3,694,536
Other assets 210,335
Total assets $6,467,701,798
Liabilities  
Payables for  
Fund shares reacquired $8,360,187
Payable to affiliates  
Investment adviser 115,695
Administrative services fee 2,740
Shareholder servicing costs 1,774,031
Distribution and service fees 61,617
Program manager fees 65
Payable for independent Trustees' compensation 5,873
Accrued expenses and other liabilities 191,885
Total liabilities $10,512,093
Net assets $6,457,189,705
Net assets consist of  
Paid-in capital $2,983,825,778
Total distributable earnings (loss) 3,473,363,927
Net assets $6,457,189,705
Shares of beneficial interest outstanding 183,002,661
17


Table of Contents
Statement of Assets and Liabilities – continued
  Net assets Shares
outstanding
Net asset value
per share (a)
Class A $3,780,213,272 105,605,934 $35.80
Class B 42,213,298 1,226,885 34.41
Class C 121,289,107 3,613,418 33.57
Class I 901,661,643 26,094,521 34.55
Class R1 14,029,610 422,278 33.22
Class R2 97,451,630 2,888,895 33.73
Class R3 268,506,082 7,584,068 35.40
Class R4 72,573,555 2,005,462 36.19
Class R6 1,135,316,377 32,861,749 34.55
Class 529A 20,630,593 595,005 34.67
Class 529B 364,033 11,302 32.21
Class 529C 2,940,505 93,144 31.57
    
(a) Maximum offering price per share was equal to the net asset value per share for all share classes, except for Classes A and 529A, for which the maximum offering prices per share were $37.98 [100 / 94.25 x $35.80] and $36.79 [100 / 94.25 x $34.67], respectively. On sales of $50,000 or more, the maximum offering prices of Class A and Class 529A shares are reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, Class C, Class 529B, and Class 529C shares. Redemption price per share was equal to the net asset value per share for Classes I, R1, R2, R3, R4, R6, and 529A.
See Notes to Financial Statements
18


Table of Contents
Financial Statements
Statement of Operations
Year ended 12/31/20
This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.
Net investment income (loss)  
Income  
Dividends $91,736,515
Dividends from affiliated issuers 329,223
Other 214,394
Income on securities loaned 170,492
Foreign taxes withheld (893,053)
Total investment income $91,557,571
Expenses  
Management fee $19,202,700
Distribution and service fees 12,165,640
Shareholder servicing costs 5,283,412
Program manager fees 10,249
Administrative services fee 571,864
Independent Trustees' compensation 80,466
Custodian fee 169,703
Shareholder communications 249,885
Audit and tax fees 63,942
Legal fees 43,776
Miscellaneous 320,579
Total expenses $38,162,216
Reduction of expenses by distributor (453,507)
Net expenses $37,708,709
Net investment income (loss) $53,848,862
Realized and unrealized gain (loss)
Realized gain (loss) (identified cost basis)  
Unaffiliated issuers $296,526,137
Affiliated issuers (15,243)
Foreign currency (85,842)
Net realized gain (loss) $296,425,052
Change in unrealized appreciation or depreciation  
Unaffiliated issuers $449,174,943
Net realized and unrealized gain (loss) $745,599,995
Change in net assets from operations $799,448,857
See Notes to Financial Statements
19


Table of Contents
Financial Statements
Statements of Changes in Net Assets
These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.
  Year ended
  12/31/20 12/31/19
Change in net assets    
From operations    
Net investment income (loss) $53,848,862 $53,170,822
Net realized gain (loss) 296,425,052 393,166,742
Net unrealized gain (loss) 449,174,943 1,118,546,292
Change in net assets from operations $799,448,857 $1,564,883,856
Total distributions to shareholders $(281,119,270) $(447,821,510)
Change in net assets from fund share transactions $(196,747,184) $(96,063,566)
Total change in net assets $321,582,403 $1,020,998,780
Net assets    
At beginning of period 6,135,607,302 5,114,608,522
At end of period $6,457,189,705 $6,135,607,302
See Notes to Financial Statements
20


Table of Contents
Financial Statements
Financial Highlights
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.
Class A Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $32.79 $26.79 $32.15 $27.94 $27.26
Income (loss) from investment operations
Net investment income (loss) (d) $0.28 $0.28 $0.32 $0.27 $0.27(c)
Net realized and unrealized gain (loss) 4.29 8.20 (1.98) 6.28 2.12
 Total from investment operations  $4.57  $8.48  $(1.66)  $6.55  $2.39
Less distributions declared to shareholders
From net investment income $(0.26) $(0.21) $(0.29) $(0.31) $(0.26)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.56)  $(2.48)  $(3.70)  $(2.34)  $(1.71)
 Net asset value, end of period (x)  $35.80  $32.79  $26.79  $32.15  $27.94
 Total return (%) (r)(s)(t)(x) 14.12 31.91 (5.31) 23.56 8.77(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 0.71 0.71 0.71 0.72 0.72(c)
Expenses after expense reductions (f) 0.70 0.69 0.69 0.70 0.71(c)
Net investment income (loss) 0.88 0.90 0.97 0.88 0.97(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $3,780,213  $3,893,021  $3,150,030  $3,543,029  $3,272,859
See Notes to Financial Statements
21


Table of Contents
Financial Highlights – continued
Class B Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $31.63 $25.95 $31.24 $27.20 $26.58
Income (loss) from investment operations
Net investment income (loss) (d) $0.04 $0.04 $0.06 $0.03 $0.06(c)
Net realized and unrealized gain (loss) 4.11 7.93 (1.91) 6.09 2.06
 Total from investment operations  $4.15  $7.97  $(1.85)  $6.12  $2.12
Less distributions declared to shareholders
From net investment income $(0.07) $(0.02) $(0.03) $(0.05) $(0.05)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.37)  $(2.29)  $(3.44)  $(2.08)  $(1.50)
 Net asset value, end of period (x)  $34.41  $31.63  $25.95  $31.24  $27.20
 Total return (%) (r)(s)(t)(x) 13.26 30.94 (6.06) 22.61 7.95(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 1.46 1.46 1.46 1.47 1.47(c)
Expenses after expense reductions (f) 1.46 1.46 1.46 1.47 1.47(c)
Net investment income (loss) 0.11 0.13 0.19 0.12 0.21(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $42,213  $52,057  $53,035  $71,698  $75,916
    
Class C Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $30.89 $25.40 $30.65 $26.73 $26.15
Income (loss) from investment operations
Net investment income (loss) (d) $0.03 $0.04 $0.05 $0.03 $0.06(c)
Net realized and unrealized gain (loss) 4.02 7.75 (1.86) 5.99 2.03
 Total from investment operations  $4.05  $7.79  $(1.81)  $6.02  $2.09
Less distributions declared to shareholders
From net investment income $(0.07) $(0.03) $(0.03) $(0.07) $(0.06)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.37)  $(2.30)  $(3.44)  $(2.10)  $(1.51)
 Net asset value, end of period (x)  $33.57  $30.89  $25.40  $30.65  $26.73
 Total return (%) (r)(s)(t)(x) 13.28 30.88 (6.04) 22.62 7.97(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 1.46 1.46 1.46 1.47 1.47(c)
Expenses after expense reductions (f) 1.46 1.46 1.46 1.47 1.47(c)
Net investment income (loss) 0.12 0.13 0.16 0.12 0.21(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $121,289  $174,905  $162,991  $307,349  $295,541
See Notes to Financial Statements
22


Table of Contents
Financial Highlights – continued
Class I Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $31.70 $25.96 $31.26 $27.23 $26.59
Income (loss) from investment operations
Net investment income (loss) (d) $0.35 $0.34 $0.37 $0.34 $0.32(c)
Net realized and unrealized gain (loss) 4.14 7.96 (1.91) 6.10 2.09
 Total from investment operations  $4.49  $8.30  $(1.54)  $6.44  $2.41
Less distributions declared to shareholders
From net investment income $(0.34) $(0.29) $(0.35) $(0.38) $(0.32)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.64)  $(2.56)  $(3.76)  $(2.41)  $(1.77)
 Net asset value, end of period (x)  $34.55  $31.70  $25.96  $31.26  $27.23
 Total return (%) (r)(s)(t)(x) 14.39 32.23 (5.08) 23.79 9.08(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 0.46 0.46 0.46 0.47 0.48(c)
Expenses after expense reductions (f) N/A N/A N/A N/A 0.48(c)
Net investment income (loss) 1.10 1.13 1.15 1.14 1.21(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $901,662  $470,991  $377,000  $1,271,676  $1,525,636
See Notes to Financial Statements
23


Table of Contents
Financial Highlights – continued
Class R1 Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $30.59 $25.24 $30.47 $26.59 $26.01
Income (loss) from investment operations
Net investment income (loss) (d) $0.03 $0.02 $0.06 $0.03 $0.05(c)
Net realized and unrealized gain (loss) 3.97 7.72 (1.85) 5.94 2.03
 Total from investment operations  $4.00  $7.74  $(1.79)  $5.97  $2.08
Less distributions declared to shareholders
From net investment income $(0.07) $(0.12) $(0.03) $(0.06) $(0.05)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.37)  $(2.39)  $(3.44)  $(2.09)  $(1.50)
 Net asset value, end of period (x)  $33.22  $30.59  $25.24  $30.47  $26.59
 Total return (%) (r)(s)(t)(x) 13.23 30.89 (6.03) 22.58 7.98(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 1.46 1.46 1.46 1.47 1.48(c)
Expenses after expense reductions (f) N/A N/A N/A N/A 1.48(c)
Net investment income (loss) 0.11 0.08 0.18 0.11 0.21(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $14,030  $16,036  $5,066  $7,058  $7,879
    
Class R2 Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $30.98 $25.42 $30.69 $26.77 $26.17
Income (loss) from investment operations
Net investment income (loss) (d) $0.18 $0.19 $0.22 $0.18 $0.19(c)
Net realized and unrealized gain (loss) 4.04 7.77 (1.88) 5.99 2.05
 Total from investment operations  $4.22  $7.96  $(1.66)  $6.17  $2.24
Less distributions declared to shareholders
From net investment income $(0.17) $(0.13) $(0.20) $(0.22) $(0.19)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.47)  $(2.40)  $(3.61)  $(2.25)  $(1.64)
 Net asset value, end of period (x)  $33.73  $30.98  $25.42  $30.69  $26.77
 Total return (%) (r)(s)(t)(x) 13.81 31.55 (5.56) 23.19 8.54(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 0.96 0.96 0.96 0.97 0.97(c)
Expenses after expense reductions (f) N/A N/A N/A N/A 0.97(c)
Net investment income (loss) 0.61 0.63 0.69 0.61 0.71(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $97,452  $126,846  $122,858  $155,976  $153,518
See Notes to Financial Statements
24


Table of Contents
Financial Highlights – continued
Class R3 Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $32.44 $26.52 $31.87 $27.72 $27.05
Income (loss) from investment operations
Net investment income (loss) (d) $0.27 $0.27 $0.31 $0.27 $0.26(c)
Net realized and unrealized gain (loss) 4.24 8.12 (1.97) 6.21 2.12
 Total from investment operations  $4.51  $8.39  $(1.66)  $6.48  $2.38
Less distributions declared to shareholders
From net investment income $(0.25) $(0.20) $(0.28) $(0.30) $(0.26)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.55)  $(2.47)  $(3.69)  $(2.33)  $(1.71)
 Net asset value, end of period (x)  $35.40  $32.44  $26.52  $31.87  $27.72
 Total return (%) (r)(s)(t)(x) 14.09 31.91 (5.36) 23.50 8.78(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 0.71 0.71 0.71 0.72 0.72(c)
Expenses after expense reductions (f) N/A N/A 0.71 0.72 0.72(c)
Net investment income (loss) 0.86 0.87 0.94 0.86 0.96(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $268,506  $298,778  $261,258  $318,535  $313,515
    
Class R4 Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $33.13 $27.04 $32.42 $28.16 $27.45
Income (loss) from investment operations
Net investment income (loss) (d) $0.36 $0.36 $0.39 $0.35 $0.33(c)
Net realized and unrealized gain (loss) 4.34 8.28 (1.99) 6.32 2.16
 Total from investment operations  $4.70  $8.64  $(1.60)  $6.67  $2.49
Less distributions declared to shareholders
From net investment income $(0.34) $(0.28) $(0.37) $(0.38) $(0.33)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.64)  $(2.55)  $(3.78)  $(2.41)  $(1.78)
 Net asset value, end of period (x)  $36.19  $33.13  $27.04  $32.42  $28.16
 Total return (%) (r)(s)(t)(x) 14.38 32.23 (5.10) 23.84 9.06(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 0.46 0.46 0.46 0.47 0.47(c)
Expenses after expense reductions (f) N/A N/A N/A N/A 0.47(c)
Net investment income (loss) 1.11 1.13 1.19 1.11 1.20(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $72,574  $75,864  $60,904  $69,546  $54,737
See Notes to Financial Statements
25


Table of Contents
Financial Highlights – continued
Class R6 Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $31.69 $25.95 $31.28 $27.24 $26.61
Income (loss) from investment operations
Net investment income (loss) (d) $0.37 $0.37 $0.41 $0.35 $0.35(c)
Net realized and unrealized gain (loss) 4.15 7.95 (1.93) 6.13 2.08
 Total from investment operations  $4.52  $8.32  $(1.52)  $6.48  $2.43
Less distributions declared to shareholders
From net investment income $(0.36) $(0.31) $(0.40) $(0.41) $(0.35)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.66)  $(2.58)  $(3.81)  $(2.44)  $(1.80)
 Net asset value, end of period (x)  $34.55  $31.69  $25.95  $31.28  $27.24
 Total return (%) (r)(s)(t)(x) 14.50 32.34 (5.03) 23.93 9.15(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 0.38 0.38 0.38 0.39 0.39(c)
Expenses after expense reductions (f) N/A N/A N/A N/A 0.39(c)
Net investment income (loss) 1.19 1.21 1.28 1.12 1.30(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $1,135,316  $1,006,215  $905,246  $814,161  $114,700
See Notes to Financial Statements
26


Table of Contents
Financial Highlights – continued
Class 529A Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $31.81 $26.05 $31.38 $27.33 $26.70
Income (loss) from investment operations
Net investment income (loss) (d) $0.26 $0.26 $0.29 $0.25 $0.25(c)
Net realized and unrealized gain (loss) 4.15 7.97 (1.92) 6.13 2.09
 Total from investment operations  $4.41  $8.23  $(1.63)  $6.38  $2.34
Less distributions declared to shareholders
From net investment income $(0.25) $(0.20) $(0.29) $(0.30) $(0.26)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.55)  $(2.47)  $(3.70)  $(2.33)  $(1.71)
 Net asset value, end of period (x)  $34.67  $31.81  $26.05  $31.38  $27.33
 Total return (%) (r)(s)(t)(x) 14.06 31.84 (5.37) 23.47 8.76(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 0.76 0.76 0.76 0.82 0.82(c)
Expenses after expense reductions (f) 0.75 0.75 0.75 0.76 0.75(c)
Net investment income (loss) 0.82 0.84 0.91 0.84 0.93(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $20,631  $16,677  $12,747  $11,725  $8,827
    
Class 529B Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $29.64 $24.43 $29.68 $25.95 $25.44
Income (loss) from investment operations
Net investment income (loss) (d) $0.29 $0.10 $0.24 $0.02 $0.12(c)
Net realized and unrealized gain (loss) 3.88 7.45 (1.81) 5.81 1.98
 Total from investment operations  $4.17  $7.55  $(1.57)  $5.83  $2.10
Less distributions declared to shareholders
From net investment income $(0.30) $(0.07) $(0.27) $(0.07) $(0.14)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.60)  $(2.34)  $(3.68)  $(2.10)  $(1.59)
 Net asset value, end of period (x)  $32.21  $29.64  $24.43  $29.68  $25.95
 Total return (%) (r)(s)(t)(x) 14.29 31.15 (5.45) 22.57 8.26(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 0.57 1.25 0.86 1.57 1.27(c)
Expenses after expense reductions (f) 0.57 1.24 0.84 1.51 1.20(c)
Net investment income (loss) 0.99 0.35 0.80 0.08 0.48(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $364  $444  $358  $464  $475
See Notes to Financial Statements
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Financial Highlights – continued
Class 529C Year ended
  12/31/20 12/31/19 12/31/18 12/31/17 12/31/16
Net asset value, beginning of period $29.15 $24.08 $29.28 $25.65 $25.16
Income (loss) from investment operations
Net investment income (loss) (d) $0.02 $0.02 $0.04 $0.02 $0.04(c)
Net realized and unrealized gain (loss) 3.78 7.35 (1.77) 5.73 1.95
 Total from investment operations  $3.80  $7.37  $(1.73)  $5.75  $1.99
Less distributions declared to shareholders
From net investment income $(0.08) $(0.03) $(0.06) $(0.09) $(0.05)
From net realized gain (1.30) (2.27) (3.41) (2.03) (1.45)
 Total distributions declared to shareholders  $(1.38)  $(2.30)  $(3.47)  $(2.12)  $(1.50)
 Net asset value, end of period (x)  $31.57  $29.15  $24.08  $29.28  $25.65
 Total return (%) (r)(s)(t)(x) 13.20 30.84 (6.08) 22.54 7.91(c)
Ratios (%) (to average net assets)
and Supplemental data:
Expenses before expense reductions (f) 1.51 1.51 1.51 1.57 1.57(c)
Expenses after expense reductions (f) 1.51 1.51 1.51 1.52 1.52(c)
Net investment income (loss) 0.07 0.08 0.14 0.07 0.16(c)
Portfolio turnover 16 16 13 12 12
Net assets at end of period (000 omitted)  $2,941  $3,775  $3,117  $3,787  $2,870
    
(c) Amount reflects a one-time reimbursement of expenses by the custodian (or former custodian) without which net investment income and performance would be lower and expenses would be higher.
(d) Per share data is based on average shares outstanding.
(f) Ratios do not reflect reductions from fees paid indirectly, if applicable.
(r) Certain expenses have been reduced without which performance would have been lower.
(s) From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.
(t) Total returns do not include any applicable sales charges.
(x) The net asset values and total returns have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting principles required at period end for financial reporting purposes.
See Notes to Financial Statements
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Notes to Financial Statements
(1) Business and Organization
Massachusetts Investors Trust (the fund) is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as a diversified open-end management investment company.
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(2) Significant Accounting Policies
General — The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. In the preparation of these financial statements, management has evaluated subsequent events occurring after the date of the fund’s Statement of Assets and Liabilities through the date that the financial statements were issued.
In March 2020, the FASB issued Accounting Standards Update 2020-04, Reference Rate Reform (Topic 848) – Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASU 2020-04”), which provides optional, temporary relief with respect to the financial reporting of contracts subject to certain types of modifications due to the planned discontinuation of the London Interbank Offered Rate (LIBOR) and other IBOR-based reference rates as of the end of 2021. The temporary relief provided by ASU 2020-04 is effective for certain reference rate-related contract modifications that occur during the period from March 12, 2020 through December 31, 2022. Management is evaluating the impact of ASU 2020-04 on the fund's investments, derivatives, debt and other contracts that will undergo reference rate-related modifications as a result of the reference rate reform.
Balance Sheet Offsetting — The fund's accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund’s Significant Accounting Policies note under the captions for each of the fund’s in-scope financial instruments and transactions.
Investment Valuations — Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be
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Notes to Financial Statements  - continued
valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar
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Notes to Financial Statements  - continued
securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of December 31, 2020 in valuing the fund's assets or liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Equity Securities:        
United States $5,953,755,248 $— $— $5,953,755,248
France 246,884,518 246,884,518
Canada 96,700,625 96,700,625
United Kingdom 82,710,678 82,710,678
Ireland 38,392,927 38,392,927
Mutual Funds 41,984,616 41,984,616
Total $6,377,717,934 $82,710,678 $— $6,460,428,612
For further information regarding security characteristics, see the Portfolio of Investments.
Foreign Currency Translation — Purchases and sales of foreign investments, income, and expenses are converted into U.S. dollars based upon currency exchange rates prevailing on the respective dates of such transactions or on the reporting date for foreign denominated receivables and payables. Gains and losses attributable to foreign currency exchange rates on sales of securities are recorded for financial statement purposes as net realized gains and losses on investments. Gains and losses attributable to foreign exchange rate movements on receivables, payables, income and expenses are recorded for financial statement purposes as foreign currency transaction gains and losses. That portion of both realized and unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed.
Security Loans — Under its Securities Lending Agency Agreement with the fund, State Street Bank and Trust Company, as lending agent, loans the securities of the fund to certain qualified institutions (the “Borrowers”) approved by the fund. Security loans can be terminated at the discretion of either the lending agent or the fund and the related securities must be returned within the earlier of the standard trade settlement period for such securities or within three business days. The loans are collateralized by cash and/or U.S. Treasury and federal agency obligations in an amount typically at least equal to the market value of the securities loaned. On loans collateralized by cash, the cash collateral is invested in a money market fund. The market value of the loaned securities is determined at the close of business of the fund and any additional required collateral is delivered to the fund on the next business day. The lending agent provides the fund with indemnification against Borrower default. In the event of Borrower default, the lending agent will, for the benefit of the fund, either purchase securities identical to those loaned or, when such purchase is commercially impracticable, pay the fund the market value of the loaned securities. In return, the lending agent assumes the fund's rights to the related collateral. If the collateral value is less than the cost to purchase identical securities, the lending agent is responsible for the shortfall, but only to the extent that such shortfall is not due to a decline in collateral value resulting from collateral reinvestment for which the fund bears the risk of loss. A portion of the income generated upon investment of the collateral is remitted to the Borrowers, and the remainder is allocated between the fund and the lending agent. On loans
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Notes to Financial Statements  - continued
collateralized by U.S. Treasury and/or federal agency obligations, a fee is received from the Borrower, and is allocated between the fund and the lending agent. Income from securities lending is separately reported in the Statement of Operations. The dividend and interest income earned on the securities loaned is accounted for in the same manner as other dividend and interest income. At December 31, 2020, there were no securities on loan or collateral outstanding.
Indemnifications — Under the fund's organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the fund. Additionally, in the normal course of business, the fund enters into agreements with service providers that may contain indemnification clauses. The fund's maximum exposure under these agreements is unknown as this would involve future claims that may be made against the fund that have not yet occurred.
Investment Transactions and Income — Investment transactions are recorded on the trade date. Dividends received in cash are recorded on the ex-dividend date. Certain dividends from foreign securities will be recorded when the fund is informed of the dividend if such information is obtained subsequent to the ex-dividend date. Dividend payments received in additional securities are recorded on the ex-dividend date in an amount equal to the value of the security on such date.
The fund may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statement of Operations in realized gain/loss if the security has been disposed of by the fund or in unrealized gain/loss if the security is still held by the fund. Any other proceeds from litigation not related to portfolio holdings are reflected as other income in the Statement of Operations.
Tax Matters and Distributions — The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. As a result, no provision for federal income tax is required. The fund’s federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund’s tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements in accordance with the applicable foreign tax law. Foreign income taxes may be withheld by certain countries in which the fund invests. Additionally, capital gains realized by the fund on securities issued in or by certain foreign countries may be subject to capital gains tax imposed by those countries.
Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future.
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Book/tax differences primarily relate to wash sale loss deferrals, treating a portion of the proceeds from redemptions as a distribution for tax purposes, and partnership adjustments.
The tax character of distributions declared to shareholders for the last two fiscal years is as follows:
  Year ended
12/31/20
Year ended
12/31/19
Ordinary income (including any short-term capital gains) $50,476,025 $40,404,040
Long-term capital gains 230,643,245 407,417,470
Total distributions $281,119,270 $447,821,510
The federal tax cost and the tax basis components of distributable earnings were as follows:
As of 12/31/20  
Cost of investments $3,084,434,432
Gross appreciation 3,403,176,009
Gross depreciation (27,181,829)
Net unrealized appreciation (depreciation) $3,375,994,180
Undistributed ordinary income 15,326,565
Undistributed long-term capital gain 55,099,041
Other temporary differences 26,944,141
Multiple Classes of Shares of Beneficial Interest — The fund offers multiple classes of shares, which differ in their respective distribution, service, and program manager fees. The fund's income, realized and unrealized gain (loss), and common expenses are allocated to shareholders based on the daily net assets of each class. Dividends are declared separately for each class. Differences in per share dividend rates are generally due to differences in separate class expenses. Class B and Class 529B shares will convert to Class A and Class 529A shares, respectively, approximately eight years after purchase. In addition, Class C and Class 529C shares will convert to Class A and Class
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Notes to Financial Statements  - continued
529A shares, respectively, approximately eight years after purchase. The fund’s distributions declared to shareholders as reported in the Statements of Changes in Net Assets are presented by class as follows:
  Year
ended
12/31/20
  Year
ended
12/31/19
Class A $160,862,321   $280,490,764
Class B 1,672,009   3,677,635
Class C 6,066,380   12,468,674
Class I 39,242,506   36,170,739
Class R1 562,619   922,996
Class R2 4,273,636   9,472,723
Class R3 11,655,412   22,054,334
Class R4 3,213,366   5,515,752
Class R6 52,560,085   75,528,058
Class 529A 835,969   1,207,219
Class 529B 14,774   35,152
Class 529C 160,193   277,464
Total $281,119,270   $447,821,510
(3) Transactions with Affiliates
Investment Adviser — The fund has an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the fund. The management fee is computed daily and paid monthly at an annual rate of 0.33% of the fund’s average daily net assets.
Distributor — MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, received $398,075 and $8,053 for the year ended December 31, 2020, as its portion of the initial sales charge on sales of Class A and Class 529A shares of the fund, respectively.
The Board of Trustees has adopted a distribution plan for certain share classes pursuant to Rule 12b-1 of the Investment Company Act of 1940.
The fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries.
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Notes to Financial Statements  - continued
Distribution Plan Fee Table:
  Distribution
Fee Rate (d)
Service
Fee Rate (d)
Total
Distribution
Plan (d)
Annual
Effective
Rate (e)
Distribution
and Service
Fee
Class A 0.25% 0.25% 0.24% $ 8,878,874
Class B 0.75% 0.25% 1.00% 1.00% 431,134
Class C 0.75% 0.25% 1.00% 1.00% 1,494,126
Class R1 0.75% 0.25% 1.00% 1.00% 132,148
Class R2 0.25% 0.25% 0.50% 0.50% 494,916
Class R3 0.25% 0.25% 0.25% 657,464
Class 529A 0.25% 0.25% 0.24% 41,631
Class 529B 0.75% 0.25% 1.00% 0.06% 214
Class 529C 0.75% 0.25% 1.00% 1.00% 35,133
Total Distribution and Service Fees         $12,165,640
(d) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees equal to these annual percentage rates of each class’s average daily net assets. The distribution and service fee rates disclosed by class represent the current rates in effect at the end of the reporting period. Any rate changes, if applicable, are detailed below.
(e) The annual effective rates represent actual fees incurred under the distribution plan for the year ended December 31, 2020 based on each class's average daily net assets.MFD has voluntarily agreed to rebate a portion of each class's 0.25% service fee attributable to accounts for which there is no financial intermediary specified on the account except for accounts attributable to MFS or its affiliates' seed money. For the year ended December 31, 2020, this rebate amounted to $449,408, $1,283, $1,102, $1,669, $27, and $18 for Class A, Class B, Class C, Class 529A, Class 529B, and Class 529C, respectively, and is included in the reduction of total expenses in the Statement of Operations. For the year ended December 31, 2020, the 0.75% distribution fee was not imposed for Class 529B shares due to the sales charge limitations contained in Financial Industry Regulatory Authority (“FINRA”) Rule 2341.
Certain Class A shares are subject to a contingent deferred sales charge (CDSC) in the event of a shareholder redemption within 18 months of purchase. Class B and Class 529B shares are subject to a CDSC in the event of a shareholder redemption within six years of purchase. Class C and Class 529C shares are subject to a CDSC in the event of a shareholder redemption within 12 months of purchase. All contingent deferred sales charges are paid to MFD and during the year ended December 31, 2020, were as follows:
  Amount
Class A $18,367
Class B 31,343
Class C 7,555
Class 529B
Class 529C 163
During the year ended December 31, 2020, to meet the requirements of FINRA Rule 2341, MFD returned $614 of the CDSC collected in the fiscal year for Class 529B which had the effect of further reducing the annual effective distribution fee rate for this class by 0.19%.
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Notes to Financial Statements  - continued
The fund has entered into and may from time to time enter into contracts with program managers and other parties which administer the tuition programs through which an investment in the fund’s 529 share classes is made. The fund has entered into an agreement with MFD pursuant to which MFD receives an annual fee of up to 0.05% of the average daily net assets attributable to each 529 share class. The services provided by MFD, or a third party with which MFD contracts, include recordkeeping and tax reporting and account services, as well as services designed to maintain the program’s compliance with the Internal Revenue Code and other regulatory requirements. Program manager fees for the year ended December 31, 2020, were as follows:
  Fee
Class 529A $8,326
Class 529B 166
Class 529C 1,757
Total Program Manager Fees $10,249
Shareholder Servicing Agent — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from the fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of the fund as determined periodically under the supervision of the fund's Board of Trustees. For the year ended December 31, 2020, the fee was $857,558, which equated to 0.0147% annually of the fund's average daily net assets. MFSC also receives reimbursement from the fund for out-of-pocket expenses, sub-accounting and other shareholder servicing costs which may be paid to affiliated and unaffiliated service providers. Class R6 shares do not incur sub-accounting fees. For the year ended December 31, 2020, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to $4,425,854.
Administrator — MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets. The administrative services fee incurred for the year ended December 31, 2020 was equivalent to an annual effective rate of 0.0098% of the fund's average daily net assets.
Trustees’ and Officers’ Compensation — The fund pays compensation to independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. The fund does not pay compensation directly to Trustees or officers of the fund who are also officers of the investment adviser, all of whom receive remuneration from MFS for their services to the fund. Certain officers and Trustees of the fund are officers or directors of MFS, MFD, and MFSC.
Prior to December 31, 2001, the fund had an unfunded defined benefit plan (“DB plan”) for independent Trustees. As of December 31, 2001, the Board took action to terminate the DB plan with respect to then-current and any future independent Trustees, such that the DB plan covers only certain of those former independent Trustees who retired on or before December 31, 2001. The DB plan resulted in a pension expense of $157 and is included in “Independent Trustees’ compensation” in the Statement of Operations for the year ended December 31, 2020. The liability for
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Notes to Financial Statements  - continued
deferred retirement benefits payable to those former independent Trustees under the DB plan amounted to $5,860 at December 31, 2020, and is included in “Payable for independent Trustees’ compensation” in the Statement of Assets and Liabilities.
Other — The fund invests in the MFS Institutional Money Market Portfolio which is managed by MFS and seeks current income consistent with preservation of capital and liquidity. This money market fund does not pay a management fee to MFS but does incur investment and operating costs.
The fund is permitted to engage in purchase and sale transactions with funds and accounts for which MFS serves as investment adviser or sub-adviser (“cross-trades”) pursuant to a policy adopted by the Board of Trustees. This policy has been designed to ensure that cross-trades conducted by the fund comply with Rule 17a-7 under the Investment Company Act of 1940. During the year ended December 31, 2020, the fund engaged in purchase transactions pursuant to this policy, which amounted to $1,417,926.
The adviser has voluntarily undertaken to reimburse the fund from its own resources on a quarterly basis for the cost of investment research embedded in the cost of the fund’s securities trades. This agreement may be rescinded at any time. For the year ended December 31, 2020, this reimbursement amounted to $182,438, which is included in “Other” income in the Statement of Operations.
(4) Portfolio Securities
For the year ended December 31, 2020, purchases and sales of investments, other than short-term obligations, aggregated $911,207,396 and $1,315,779,672, respectively.
(5) Shares of Beneficial Interest
The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows:
  Year ended
12/31/20
  Year ended
12/31/19
  Shares Amount   Shares Amount
Shares sold          
Class A 8,382,285 $264,259,731   7,593,227 $239,974,213
Class B 7,311 224,607   51,899 1,515,720
Class C 447,057 13,043,887   456,759 13,620,134
Class I 14,631,672 453,354,623   3,052,953 93,614,427
Class R1 61,699 1,828,535   358,882 11,310,718
Class R2 329,592 9,674,439   395,865 11,825,986
Class R3 1,485,962 46,749,707   1,525,298 47,933,184
Class R4 389,562 12,612,240   369,197 11,741,600
Class R6 7,584,464 229,803,174   8,203,507 251,080,506
Class 529A 120,347 3,763,216   59,879 1,823,685
Class 529B 2,303 72,770   2,810 82,514
Class 529C 20,389 584,224   15,346 433,671
  33,462,643 $1,035,971,153   22,085,622 $684,956,358
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Notes to Financial Statements  - continued
  Year ended
12/31/20
  Year ended
12/31/19
  Shares Amount   Shares Amount
Shares issued to shareholders
in reinvestment of distributions
         
Class A 4,222,075 $145,617,983   7,821,831 $252,684,192
Class B 49,183 1,638,379   115,469 3,600,057
Class C 182,859 5,942,224   381,080 11,609,473
Class I 1,052,270 35,301,287   1,053,505 32,911,301
Class R1 17,472 562,418   30,572 922,996
Class R2 130,101 4,232,757   303,899 9,280,983
Class R3 341,521 11,653,085   689,920 22,054,334
Class R4 92,270 3,213,014   169,024 5,515,401
Class R6 1,492,984 49,736,204   2,296,313 71,720,611
Class 529A 24,564 821,996   38,501 1,207,219
Class 529B 475 14,774   1,203 35,152
Class 529C 5,129 156,759   9,646 277,464
  7,610,903 $258,890,880   12,910,963 $411,819,183
Shares reacquired          
Class A (25,732,630) $(821,036,635)   (14,277,247) $(451,456,443)
Class B (475,457) (14,412,553)   (564,870) (17,094,240)
Class C (2,677,821) (82,377,596)   (1,593,901) (47,457,274)
Class I (4,445,874) (135,218,670)   (3,770,687) (114,947,736)
Class R1 (181,121) (5,293,897)   (65,971) (1,967,949)
Class R2 (1,665,176) (50,428,670)   (1,438,686) (42,417,849)
Class R3 (3,452,884) (109,514,668)   (2,855,266) (88,410,401)
Class R4 (766,509) (24,955,753)   (500,594) (16,131,997)
Class R6 (7,963,431) (244,075,628)   (13,631,022) (410,216,499)
Class 529A (74,103) (2,301,580)   (63,428) (1,931,615)
Class 529B (6,460) (184,943)   (3,692) (107,472)
Class 529C (61,868) (1,808,624)   (24,940) (699,632)
  (47,503,334) $(1,491,609,217)   (38,790,304) $(1,192,839,107)
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Notes to Financial Statements  - continued
  Year ended
12/31/20
  Year ended
12/31/19
  Shares Amount   Shares Amount
Net change          
Class A (13,128,270) $(411,158,921)   1,137,811 $41,201,962
Class B (418,963) (12,549,567)   (397,502) (11,978,463)
Class C (2,047,905) (63,391,485)   (756,062) (22,227,667)
Class I 11,238,068 353,437,240   335,771 11,577,992
Class R1 (101,950) (2,902,944)   323,483 10,265,765
Class R2 (1,205,483) (36,521,474)   (738,922) (21,310,880)
Class R3 (1,625,401) (51,111,876)   (640,048) (18,422,883)
Class R4 (284,677) (9,130,499)   37,627 1,125,004
Class R6 1,114,017 35,463,750   (3,131,202) (87,415,382)
Class 529A 70,808 2,283,632   34,952 1,099,289
Class 529B (3,682) (97,399)   321 10,194
Class 529C (36,350) (1,067,641)   52 11,503
  (6,429,788) $(196,747,184)   (3,793,719) $(96,063,566)
Effective June 1, 2019, purchases of the fund’s Class B and Class 529B shares are closed to new and existing investors subject to certain exceptions. Please see the fund’s prospectus for details.
(6) Line of Credit
The fund and certain other funds managed by MFS participate in a $1.25 billion unsecured committed line of credit of which $1 billion is reserved for use by the fund and certain other U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of one month LIBOR, the Federal Funds Effective Rate and the Overnight Bank Funding Rate, plus an agreed upon spread. A commitment fee, based on the average daily, unused portion of the committed line of credit, is allocated among the participating funds. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended December 31, 2020, the fund’s commitment fee and interest expense were $27,780 and $0, respectively, and are included in “Miscellaneous” expense in the Statement of Operations.
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Notes to Financial Statements  - continued
(7) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers:
Affiliated Issuers Beginning
Value
Purchases Sales
Proceeds
Realized
Gain
(Loss)
Change in
Unrealized
Appreciation or
Depreciation
Ending
Value
MFS Institutional Money Market Portfolio  $58,192,065  $511,381,608  $527,573,814  $(15,243)  $—  $41,984,616
    
Affiliated Issuers Dividend
Income
Capital Gain
Distributions
MFS Institutional Money Market Portfolio  $329,223  $—
(8) Impacts of COVID-19
The pandemic related to the global spread of novel coronavirus disease (COVID-19), which was first detected in December 2019, has resulted in significant disruptions to global business activity and the global economy, as well as the economies of individual countries, the financial performance of individual companies and sectors, and the securities and commodities markets in general. This pandemic, the full effects of which are still unknown, has resulted in substantial market volatility and may have adversely impacted the prices and liquidity of the fund's investments and the fund's performance.
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Report of Independent Registered Public Accounting Firm
To the Board of Trustees and the Shareholders of Massachusetts Investors Trust:
Opinion on the Financial Statements and Financial Highlights
We have audited the accompanying statement of assets and liabilities of Massachusetts Investors Trust (the “Fund”), including the portfolio of investments, as of December 31, 2020, the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended, and the related notes. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Fund as of December 31, 2020, and the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended, and the financial highlights for each of the five years in the period then ended, in conformity with accounting principles generally accepted in the United States of America.
Basis for Opinion
These financial statements and financial highlights are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.
We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.
Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as
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Report of Independent Registered Public Accounting Firm – continued
evaluating the overall presentation of the financial statements and financial highlights. Our procedures included confirmation of securities owned as of December 31, 2020, by correspondence with the custodian. We believe that our audits provide a reasonable basis for our opinion.
DELOITTE & TOUCHE LLP
Boston, Massachusetts
February 16, 2021
We have served as the auditor of one or more of the MFS investment companies since 1924.
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Trustees and Officers — Identification and Background
The Trustees and Officers of the Trust, as of February 1, 2021, are listed below, together with their principal occupations during the past five years. (Their titles may have varied during that period.) The address of each Trustee and Officer is 111 Huntington Avenue, Boston, Massachusetts 02199-7618.
Name, Age   Position(s) Held with Fund   Trustee/Officer Since(h)   Number of MFS Funds overseen by the Trustee   Principal Occupations During
the Past Five Years
  Other Directorships During
the Past Five Years (j)
INTERESTED TRUSTEES    
Robert J. Manning (k)
(age 57)
  Trustee   February 2004   134   Massachusetts Financial Services Company, Non-Executive Chairman (since January 2021); Director; Chairman of the Board; Executive Chairman (January 2017-2020); Co-Chief Executive Officer (2015-2016)   N/A
Michael W. Roberge (k)
(age 54)
  Trustee   January 2021   134   Massachusetts Financial Services Company, Chairman (since January 2021); Chief Executive Officer (since January 2017); Director; President (until December 2018); Chief Investment Officer (until December 2018); Co-Chief Executive Officer (until December 2016)   N/A
INDEPENDENT TRUSTEES    
John P. Kavanaugh
(age 66)
  Trustee and Chair of Trustees   January 2009   134   Private investor   N/A
Steven E. Buller
(age 69)
  Trustee   February 2014   134   Private investor   N/A
John A. Caroselli
(age 66)
  Trustee   March 2017   134   Private investor; JC Global Advisors, LLC (management consulting), President (since 2015)   N/A
Maureen R. Goldfarb
(age 65)
  Trustee   January 2009   134   Private investor   N/A
Peter D. Jones
(age 65)
  Trustee   January 2019   134   Private investor   N/A
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Trustees and Officers - continued
Name, Age   Position(s) Held with Fund   Trustee/Officer Since(h)   Number of MFS Funds overseen by the Trustee   Principal Occupations During
the Past Five Years
  Other Directorships During
the Past Five Years (j)
James W. Kilman, Jr.
(age 59)
  Trustee   January 2019   134   Burford Capital Limited (finance and investment management), Chief Financial Officer (since 2019); KielStrand Capital LLC (family office), Chief Executive Officer (since 2016); Morgan Stanley & Co. (financial services), Vice Chairman of Investment Banking, Co-Head of Diversified Financials Coverage – Financial Institutions Investment Banking Group (until 2016)   Alpha-En Corporation, Director (2016-2019)
Clarence Otis, Jr.
(age 64)
  Trustee   March 2017   134   Private investor   VF Corporation, Director; Verizon Communications, Inc., Director; The Travelers Companies, Director
Maryanne L. Roepke
(age 64)
  Trustee   May 2014   134   Private investor   N/A
Laurie J. Thomsen
(age 63)
  Trustee   March 2005   134   Private investor   The Travelers Companies, Director; Dycom Industries, Inc., Director
    
Name, Age   Position(s) Held with
Fund
  Trustee/Officer Since(h)   Number of MFS Funds for which the Person is an Officer   Principal Occupations During
the Past Five Years
OFFICERS                
Christopher R. Bohane (k)
(age 47)
  Assistant Secretary and Assistant Clerk   July 2005   134   Massachusetts Financial Services Company, Senior Vice President and Associate General Counsel
Kino Clark (k)
(age 52)
  Assistant Treasurer   January 2012   134   Massachusetts Financial Services Company, Vice President
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Trustees and Officers - continued
Name, Age   Position(s) Held with
Fund
  Trustee/Officer Since(h)   Number of MFS Funds for which the Person is an Officer   Principal Occupations During
the Past Five Years
John W. Clark, Jr. (k)
(age 53)
  Assistant Treasurer   April 2017   134   Massachusetts Financial Services Company, Vice President (since March 2017); Deutsche Bank (financial services), Department Head - Treasurer's Office (until February 2017)
Thomas H. Connors (k)
(age 61)
  Assistant Secretary and Assistant Clerk   September 2012   134   Massachusetts Financial Services Company, Vice President and Senior Counsel
David L. DiLorenzo (k)
(age 52)
  President   July 2005   134   Massachusetts Financial Services Company, Senior Vice President
Heidi W. Hardin (k)
(age 53)
  Secretary and Clerk   April 2017   134   Massachusetts Financial Services Company, Executive Vice President and General Counsel (since March 2017); Harris Associates (investment management), General Counsel (until January 2017)
Brian E. Langenfeld (k)
(age 47)
  Assistant Secretary and Assistant Clerk   June 2006   134   Massachusetts Financial Services Company, Vice President and Senior Counsel
Amanda S. Mooradian (k)
(age 41)
  Assistant Secretary and Assistant Clerk   September 2018   134   Massachusetts Financial Services Company, Assistant Vice President and Senior Counsel
Susan A. Pereira (k)
(age 50)
  Assistant Secretary and Assistant Clerk   July 2005   134   Massachusetts Financial Services Company, Vice President and Assistant General Counsel
Kasey L. Phillips (k)
(age 50)
  Assistant Treasurer   September 2012   134   Massachusetts Financial Services Company, Vice President
Matthew A. Stowe (k)
(age 46)
  Assistant Secretary and Assistant Clerk   October 2014   134   Massachusetts Financial Services Company, Vice President and Assistant General Counsel
Martin J. Wolin (k)
(age 53)
  Chief Compliance Officer   July 2015   134   Massachusetts Financial Services Company, Senior Vice President and Chief Compliance Officer
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Trustees and Officers - continued
Name, Age   Position(s) Held with
Fund
  Trustee/Officer Since(h)   Number of MFS Funds for which the Person is an Officer   Principal Occupations During
the Past Five Years
James O. Yost (k)
(age 60)
  Treasurer   September 1990   134   Massachusetts Financial Services Company, Senior Vice President
(h) Date first appointed to serve as Trustee/officer of an MFS Fund. Each Trustee has served continuously since appointment unless indicated otherwise. For the period from December 15, 2004 until February 22, 2005, Mr. Manning served as Advisory Trustee. From January 2012 through December 2016, Messrs. DiLorenzo and Yost served as Treasurer and Deputy Treasurer of the Funds, respectively.
(j) Directorships or trusteeships of companies required to report to the Securities and Exchange Commission (i.e., “public companies”).
(k) “Interested person” of the Trust within the meaning of the Investment Company Act of 1940 (referred to as the 1940 Act), which is the principal federal law governing investment companies like the fund, as a result of a position with MFS. The address of MFS is 111 Huntington Avenue, Boston, Massachusetts 02199-7618.
Each Trustee (other than Messrs. Jones, Kilman and Roberge) has been elected by shareholders and each Trustee and Officer holds office until his or her successor is chosen and qualified or until his or her earlier death, resignation, retirement or removal. Mr. Roberge became a Trustee of the Funds on January 1, 2021 and Messrs. Jones and Kilman became Trustees of the Funds on January 1, 2019. The Trust does not hold annual meetings for the purpose of electing Trustees, and Trustees are not elected for fixed terms. Under the terms of the Board's retirement policy, an Independent Trustee shall retire at the end of the calendar year in which he or she reaches the earlier of 75 years of age or 15 years of service on the Board (or, in the case of any Independent Trustee who joined the Board prior to 2015, 20 years of service on the Board).
Messrs. Buller, Kilman and Otis and Ms. Roepke are members of the Trust’s Audit Committee.
Each of the Interested Trustees and certain Officers hold comparable officer positions with certain affiliates of MFS.
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Trustees and Officers - continued
The Statement of Additional Information for a Fund includes further information about the Trustees and is available without charge upon request by calling 1-800-225-2606.

Investment Adviser Custodian
Massachusetts Financial Services Company
111 Huntington Avenue
Boston, MA 02199-7618
State Street Bank and Trust Company
1 Lincoln Street
Boston, MA 02111-2900
    
Distributor Independent Registered Public Accounting Firm
MFS Fund Distributors, Inc.
111 Huntington Avenue
Boston, MA 02199-7618
Deloitte & Touche LLP
200 Berkeley Street
Boston, MA 02116
    
Portfolio Manager(s)  
Kevin Beatty
Alison O’Neill Mackey
Ted Maloney
 
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Board Review of Investment Advisory Agreement
Massachusetts Investors Trust
The Investment Company Act of 1940 requires that both the full Board of Trustees and a majority of the non-interested (“independent”) Trustees, voting separately, annually approve the continuation of the Fund’s investment advisory agreement with MFS. The Trustees consider matters bearing on the Fund and its advisory arrangements at their meetings throughout the year, including a review of performance data at each regular meeting. In addition, the independent Trustees met several times by videoconference (in accordance with Securities and Exchange Commission relief) over the course of three months beginning in May and ending in July, 2020 (“contract review meetings”) for the specific purpose of considering whether to approve the continuation of the investment advisory agreement for the Fund and the other investment companies that the Board oversees (the “MFS Funds”). The independent Trustees were assisted in their evaluation of the Fund’s investment advisory agreement by independent legal counsel, from whom they received separate legal advice and with whom they met separately from MFS during various contract review meetings. The independent Trustees were also assisted in this process by an independent consultant who was retained by and reported to the independent Trustees.
In connection with their deliberations regarding the continuation of the investment advisory agreement, the Trustees, including the independent Trustees, considered such information and factors as they believed, in light of the legal advice furnished to them and their own business judgment, to be relevant. The investment advisory agreement for the Fund was considered separately, although the Trustees also took into account the common interests of all MFS Funds in their review. As described below, the Trustees considered the nature, quality, and extent of the various investment advisory, administrative, and shareholder services performed by MFS under the existing investment advisory agreement and other arrangements with the Fund.
In connection with their contract review meetings, the Trustees received and relied upon materials that included, among other items: (i) information provided by Broadridge Financial Solutions, Inc. (“Broadridge”), an independent third party, on the investment performance of the Fund for various time periods ended December 31, 2019 and the investment performance of a group of funds with substantially similar investment classifications/objectives (the “Broadridge performance universe”), (ii) information provided by Broadridge on the Fund’s advisory fees and other expenses and the advisory fees and other expenses of comparable funds identified by Broadridge as well as all other funds in the same investment classification/category (the “Broadridge expense group and universe”), (iii) information provided by MFS on the advisory fees of portfolios of other clients of MFS, including institutional separate accounts and other clients, (iv) information as to whether and to what extent applicable expense waivers, reimbursements or fee “breakpoints” are observed for the Fund, (v) information regarding MFS’ financial results and financial condition, including MFS’ and certain of its affiliates’ estimated profitability from services performed for the Fund and the MFS Funds as a whole, and compared to MFS’ institutional business, (vi) MFS’ views regarding the outlook for the mutual fund industry and the strategic business plans of MFS, (vii) descriptions of various functions performed by MFS for the Funds, such as compliance monitoring and portfolio trading practices, and (viii)
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Board Review of Investment Advisory Agreement - continued
information regarding the overall organization of MFS, including information about MFS’ senior management and other personnel providing investment advisory, administrative and other services to the Fund and the other MFS Funds. The comparative performance, fee and expense information prepared and provided by Broadridge was not independently verified and the independent Trustees did not independently verify any information provided to them by MFS.
The Trustees’ conclusion as to the continuation of the investment advisory agreement was based on a comprehensive consideration of all information provided to the Trustees and not the result of any single factor. Some of the factors that figured particularly in the Trustees’ deliberations are described below, although individual Trustees may have evaluated the information presented differently from one another, giving different weights to various factors. It is also important to recognize that the fee arrangements for the Fund and other MFS Funds are the result of years of review and discussion between the independent Trustees and MFS, that certain aspects of such arrangements may receive greater scrutiny in some years than in others, and that the Trustees’ conclusions may be based, in part, on their consideration of these same arrangements during the course of the year and in prior years.
Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund’s total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund’s Class A shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2019, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund’s Class A shares was in the 2nd quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund’s Class A shares was in the 2nd quintile for the one-year period and the 1st quintile for the three-year period ended December 31, 2019 relative to the Broadridge performance universe. Because of the passage of time, these performance results may differ from the performance results for more recent periods, including those shown elsewhere in this report. In addition, the Trustees reviewed the Fund’s Class I total return performance relative to the Fund’s benchmark performance for the ten-, five-, three- and one-year periods ended December 31, 2019.
In the course of their deliberations, the Trustees took into account information provided by MFS in connection with the contract review meetings, as well as during investment review meetings conducted with portfolio management personnel during the course of the year regarding the Fund’s performance. After reviewing these and related factors, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreement, that they were satisfied with MFS’ responses and efforts relating to investment performance.
In assessing the reasonableness of the Fund’s advisory fee, the Trustees considered, among other information, the Fund’s advisory fee and the total expense ratio of the Fund’s Class A shares as a percentage of average daily net assets and the advisory fee and total expense ratios of the Broadridge expense group based on information provided by Broadridge. The Trustees considered that, according to the data provided
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Board Review of Investment Advisory Agreement - continued
by Broadridge (which takes into account any fee reductions or expense limitations that were in effect during the Fund’s last fiscal year), the Fund’s effective advisory fee rate and total expense ratio were each lower than the Broadridge expense group median.
The Trustees also considered the advisory fees charged by MFS to any institutional separate accounts advised by MFS (“separate accounts”) and unaffiliated investment companies for which MFS serves as subadviser (“subadvised funds”) that have comparable investment strategies to the Fund, if any. In comparing these fees, the Trustees considered information provided by MFS as to the generally broader scope of services provided by MFS to the Fund, as well as the more extensive regulatory burdens imposed on MFS in managing the Fund, in comparison to separate accounts and subadvised funds. The Trustees also considered the higher demands placed on MFS’ investment personnel and trading infrastructure as a result of the daily cash in-flows and out-flows of the Fund in comparison to separate accounts.
The Trustees also considered whether the Fund may benefit from any economies of scale in the management of the Fund in the event of growth in assets of the Fund. They noted that the Fund’s advisory fee rate schedule is not subject to any breakpoints. Taking into account that the Fund’s effective advisory fee rate was lower than the Broadridge expense group median described above, the Trustees determined not to recommend any advisory fee breakpoints for the Fund at this time.
The Trustees also considered information prepared by MFS relating to MFS’ costs and profits with respect to the Fund, the MFS Funds considered as a group, and other investment companies and accounts advised by MFS, as well as MFS’ methodologies used to determine and allocate its costs to the MFS Funds, the Fund and other accounts and products for purposes of estimating profitability.
After reviewing these and other factors described herein, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreement, that the advisory fees charged to the Fund represent reasonable compensation in light of the services being provided by MFS to the Fund.
In addition, the Trustees considered MFS’ resources and related efforts to continue to retain, attract and motivate capable personnel to serve the Fund. The Trustees also considered current and developing conditions in the financial services industry, including the presence of large and well-capitalized companies which are spending, and appear to be prepared to continue to spend, substantial sums to engage personnel and to provide services to competing investment companies. In this regard, the Trustees also considered the financial resources of MFS and its ultimate parent, Sun Life Financial Inc. The Trustees also considered the advantages and possible disadvantages to the Fund of having an adviser that also serves other investment companies as well as other accounts.
The Trustees also considered the nature, quality, cost, and extent of administrative, transfer agency, and distribution services provided to the Fund by MFS and its affiliates under agreements and plans other than the investment advisory agreement, including any 12b-1 fees the Fund pays to MFS Fund Distributors, Inc., an affiliate of MFS. The Trustees also considered the nature, extent and quality of certain other services MFS performs or arranges for on the Fund’s behalf, which may include securities lending programs, directed expense payment programs, class action recovery programs,
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Board Review of Investment Advisory Agreement - continued
and MFS’ interaction with third-party service providers, principally custodians and sub-custodians. The Trustees concluded that the various non-advisory services provided by MFS and its affiliates on behalf of the Fund were satisfactory.
The Trustees considered so-called “fall-out benefits” to MFS such as reputational value derived from serving as investment manager to the MFS Funds. The Trustees also considered that MFS discontinued its historic practice of obtaining investment research from portfolio brokerage commissions paid by certain MFS Funds effective January 2018, and directly pays or voluntarily reimburses a Fund, if applicable, for the costs of external research acquired through the use of the Fund’s portfolio brokerage commissions.
Based on their evaluation of factors that they deemed to be material, including those factors described above, the Board of Trustees, including the independent Trustees, concluded that the Fund’s investment advisory agreement with MFS should be continued for an additional one-year period, commencing August 1, 2020.
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Proxy Voting Policies and Information
MFS votes proxies on behalf of the fund pursuant to proxy voting policies and procedures that are available without charge, upon request, by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC’s Web site at http://www.sec.gov.
Information regarding how the fund voted proxies relating to portfolio securities during the most recent twelve-month period ended June 30 is available by August 31 of each year without charge by visiting mfs.com/proxyvoting, or by visiting the SEC’s Web site at http://www.sec.gov.
Quarterly Portfolio Disclosure
The fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year as an exhibit to its reports on Form N-PORT. The fund's Form N-PORT reports are available on the SEC's Web site at  http://www.sec.gov. A shareholder can obtain the portfolio holdings report for the first and third quarters of the fund's fiscal year at mfs.com/openendfunds by choosing the fund's name and then scrolling to the “Resources” section and clicking on the “Prospectus and Reports” tab.
Further Information
From time to time, MFS may post important information about the fund or the MFS funds on the MFS Web site (mfs.com). This information is available at https://www.mfs.com/announcements or at mfs.com/openendfunds by choosing the fund’s name and then scrolling to the “Resources” section and clicking on the “Announcements” tab, if any.
Information About Fund Contracts and Legal Claims
The fund has entered into contractual arrangements with an investment adviser, administrator, distributor, shareholder servicing agent, 529 program manager (if applicable), and custodian who each provide services to the fund. Unless expressly stated otherwise, shareholders are not parties to, or intended beneficiaries of these contractual arrangements, and these contractual arrangements are not intended to create any shareholder right to enforce them against the service providers or to seek any remedy under them against the service providers, either directly or on behalf of the fund.
Under the Trust’s By-Laws and Declaration of Trust, any claims asserted against or on behalf of the MFS Funds, including claims against Trustees and Officers, must be brought in state and federal courts located within the Commonwealth of Massachusetts.
Federal Tax Information (unaudited)
The fund will notify shareholders of amounts for use in preparing 2020 income tax forms in January 2021.  The following information is provided pursuant to provisions of the Internal Revenue Code.
The fund designates the maximum amount allowable as qualified dividend income eligible to be taxed at the same rate as long-term capital gain.
The fund designates $272,971,000 as capital gain dividends paid during the fiscal year.
For corporate shareholders, 100% of the ordinary income dividends paid during the fiscal year qualify for the corporate dividends received deduction.
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The fund designates the maximum amount allowable as Section 199A dividends as defined in Proposed Treasury Regulation §1.199A-3(d).
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rev. 3/16
FACTS WHAT DOES MFS DO WITH YOUR PERSONAL INFORMATION?
    
Why? Financial companies choose how they share your personal information. Federal law gives consumers the right to limit some but not all sharing. Federal law also requires us to tell you how we collect, share, and protect your personal information. Please read this notice carefully to understand what we do.
    
What? The types of personal information we collect and share depend on the product or service you have with us. This information can include:
• Social Security number and account balances
• Account transactions and transaction history
• Checking account information and wire transfer instructions
When you are no longer our customer, we continue to share your information as described in this notice.
    
How? All financial companies need to share customers' personal information to run their everyday business. In the section below, we list the reasons financial companies can share their customers' personal information; the reasons MFS chooses to share; and whether you can limit this sharing.
    
Reasons we can share your
personal information
Does MFS share? Can you limit
this sharing?
For our everyday business purposes –
such as to process your transactions, maintain your
account(s), respond to court orders and legal
investigations, or report to credit bureaus
Yes No
For our marketing purposes –
to offer our products and services to you
No We don't share
For joint marketing with other
financial companies
No We don't share
For our affiliates' everyday business purposes –
information about your transactions and experiences
No We don't share
For our affiliates' everyday business purposes –
information about your creditworthiness
No We don't share
For nonaffiliates to market to you No We don't share
    
Questions? Call 800-225-2606 or go to mfs.com.
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Page 2
Who we are
Who is providing this notice? MFS Funds, MFS Investment Management, MFS Institutional Advisors, Inc., and MFS Heritage Trust Company.
    
What we do
How does MFS
protect my personal
information?
To protect your personal information from unauthorized access and use, we use security measures that comply with federal law. These measures include procedural, electronic, and physical safeguards for the protection of the personal information we collect about you.
How does MFS
collect my personal
information?
We collect your personal information, for example, when you
• open an account or provide account information
• direct us to buy securities or direct us to sell your securities
• make a wire transfer
We also collect your personal information from others, such as credit bureaus, affiliates, or other companies.
Why can't I limit all sharing? Federal law gives you the right to limit only
• sharing for affiliates' everyday business purposes – information about your creditworthiness
• affiliates from using your information to market to you
• sharing for nonaffiliates to market to you
State laws and individual companies may give you additional rights to limit sharing.
    
Definitions
Affiliates Companies related by common ownership or control. They can be financial and nonfinancial companies.
•  MFS does not share personal information with affiliates, except for everyday business purposes as described on page one of this notice.
Nonaffiliates Companies not related by common ownership or control. They can be financial and nonfinancial companies.
•  MFS does not share with nonaffiliates so they can market to you.
Joint marketing A formal agreement between nonaffiliated financial companies that together market financial products or services to you.
•  MFS doesn't jointly market.
    
Other important information
If you own an MFS product or receive an MFS service in the name of a third party such as a bank or broker-dealer, their privacy policy may apply to you instead of ours.
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Save paper with eDelivery.
MFS® will send you prospectuses, reports, and proxies directly via e-mail so you will get information faster with less mailbox clutter.
To sign up:
1. Go to mfs.com.
2. Log in via MFS® Access.
3. Select eDelivery.
If you own your MFS fund shares through a financial institution or a retirement plan, MFS® TALK, MFS® Access, or eDelivery may not be available to you.
CONTACT
WEB SITE
mfs.com
MFS TALK
1-800-637-8255
24 hours a day
ACCOUNT SERVICE AND LITERATURE
Shareholders
1-800-225-2606
Financial advisors
1-800-343-2829
Retirement plan services
1-800-637-1255
MAILING ADDRESS
MFS Service Center, Inc.
P.O. Box 219341
Kansas City, MO 64121-9341
OVERNIGHT MAIL
MFS Service Center, Inc.
Suite 219341
430 W 7th Street
Kansas City, MO 64105-1407


Item 1(b):

Not applicable.


ITEM 2.

CODE OF ETHICS.

The Registrant has adopted a Code of Ethics (the “Code”) pursuant to Section 406 of the Sarbanes-Oxley Act and as defined in Form N-CSR that applies to the Registrant’s principal executive officer and principal financial and accounting officer. During the period covered by this report, the Registrant has not amended any provision in the Code that relates to an element of the Code’s definition enumerated in paragraph (b) of Item 2 of this Form N-CSR. During the period covered by this report, the Registrant did not grant a waiver, including an implicit waiver, from any provision of the Code.

A copy of the Code is filed as an exhibit to this Form N-CSR.

 

ITEM 3.

AUDIT COMMITTEE FINANCIAL EXPERT.

Messrs. Steven E. Buller, James Kilman, and Clarence Otis, Jr. and Ms. Maryanne L. Roepke, members of the Audit Committee, have been determined by the Board of Trustees in their reasonable business judgment to meet the definition of “audit committee financial expert” as such term is defined in Form N-CSR. In addition, Messrs. Buller, Kilman, and Otis and Ms. Roepke are “independent” members of the Audit Committee (as such term has been defined by the Securities and Exchange Commission in regulations implementing Section 407 of the Sarbanes-Oxley Act of 2002). The Securities and Exchange Commission has stated that the designation of a person as an audit committee financial expert pursuant to this Item 3 on the Form N-CSR does not impose on such a person any duties, obligations or liability that are greater than the duties, obligations or liability imposed on such person as a member of the Audit Committee and the Board of Trustees in the absence of such designation or identification.

 

ITEM 4.

PRINCIPAL ACCOUNTANT FEES AND SERVICES.

Items 4(a) through 4(d) and 4(g):

The Board of Trustees has appointed Deloitte & Touche LLP (“Deloitte”) to serve as independent accountants to the series of the Registrant (the series referred to as the “Fund”). The tables below set forth the audit fees billed to the Fund as well as fees for non-audit services provided to the Fund and/or to the Fund’s investment adviser, Massachusetts Financial Services Company (“MFS”), and to various entities either controlling, controlled by, or under common control with MFS that provide ongoing services to the Fund (“MFS Related Entities”).

For the fiscal years ended December 31, 2020 and 2019, audit fees billed to the Fund by Deloitte were as follows:

 

     Audit Fees  
   2020      2019  

Fees billed by Deloitte:

     

Massachusetts Investors Trust

     51,409        50,563  


For the fiscal years ended December 31, 2020 and 2019, fees billed by Deloitte for audit-related, tax and other services provided to the Fund and for audit-related, tax and other services provided to MFS and MFS Related Entities were as follows:

 

     Audit-Related  Fees1      Tax Fees2      All Other Fees3  
   2020      2019      2020      2019      2020      2019  

Fees billed by Deloitte:

                 

To Massachusetts Investors Trust

     0        0        7,909        7,138        0        0  
     Audit-Related  Fees1      Tax Fees2      All Other Fees3  
   2020      2019      2020      2019      2020      2019  

Fees billed by Deloitte:

                 

To MFS and MFS Related Entities of Massachusetts Investors Trust*

     0        0        0        0        5,390        3,790  

 

     Aggregate Fees for Non-audit
Services
 
   2020      2019  

Fees billed by Deloitte:

     

To Massachusetts Investors Trust, MFS and MFS Related Entities#

     557,049        360,928  

 

*  

This amount reflects the fees billed to MFS and MFS Related Entities for non-audit services relating directly to the operations and financial reporting of the Fund (portions of which services also related to the operations and financial reporting of other funds within the MFS Funds complex).

#

This amount reflects the aggregate fees billed by Deloitte for non-audit services rendered to the Fund and for non-audit services rendered to MFS and the MFS Related Entities.

1 

The fees included under “Audit-Related Fees” are fees related to assurance and related services that are reasonably related to the performance of the audit or review of financial statements, but not reported under ‘‘Audit Fees,’’ including accounting consultations, agreed-upon procedure reports, attestation reports, comfort letters and internal control reviews.

2 

The fees included under “Tax Fees” are fees associated with tax compliance, tax advice and tax planning, including services relating to the filing or amendment of federal, state or local income tax returns, regulated investment company qualification reviews and tax distribution and analysis.

3 

The fees included under “All Other Fees” are fees for products and services provided by Deloitte other than those reported under “Audit Fees,” “Audit-Related Fees” and “Tax Fees”.

Item 4(e)(1):

Set forth below are the policies and procedures established by the Audit Committee of the Board of Trustees relating to the pre-approval of audit and non-audit related services:

To the extent required by applicable law, pre-approval by the Audit Committee of the Board is needed for all audit and permissible non-audit services rendered to the Fund and all permissible non-audit services rendered to MFS or MFS Related Entities if the services relate directly to the operations and financial reporting of the Registrant. Pre-approval is currently on an engagement-by-engagement basis. In the event pre-approval of such services is necessary between regular meetings of the Audit Committee and it is not practical to wait to seek pre-approval at the next regular meeting of the Audit Committee, pre-approval of such services may be referred to the Chair of the Audit Committee for approval; provided that the Chair may not pre-approve any individual engagement for such


services exceeding $50,000 or multiple engagements for such services in the aggregate exceeding $100,000 between such regular meetings of the Audit Committee. Any engagement pre-approved by the Chair between regular meetings of the Audit Committee shall be presented for ratification by the entire Audit Committee at its next regularly scheduled meeting.

Item 4(e)(2):

None, or 0%, of the services relating to the Audit-Related Fees, Tax Fees and All Other Fees paid by the Fund and MFS and MFS Related Entities relating directly to the operations and financial reporting of the Registrant disclosed above were approved by the audit committee pursuant to paragraphs (c)(7)(i)(C) of Rule 2-01 of Regulation S-X (which permits audit committee approval after the start of the engagement with respect to services other than audit, review or attest services, if certain conditions are satisfied).

Item 4(f):

Not applicable.

Item 4(h):

The Registrant’s Audit Committee has considered whether the provision by a Registrant’s independent registered public accounting firm of non-audit services to MFS and MFS Related Entities that were not pre-approved by the Committee (because such services were provided prior to the effectiveness of SEC rules requiring pre-approval or because such services did not relate directly to the operations and financial reporting of the Registrant) was compatible with maintaining the independence of the independent registered public accounting firm as the Registrant’s principal auditors.

 

ITEM 5.

AUDIT COMMITTEE OF LISTED REGISTRANTS.

Not applicable to the Registrant.

 

ITEM 6.

INVESTMENTS

A schedule of investments of the Registrant is included as part of the report to shareholders of such series under Item 1(a) of this Form N-CSR.

 

ITEM 7.

DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable to the Registrant.

 

ITEM 8.

PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable to the Registrant.


ITEM 9.

PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.

Not applicable to the Registrant.

 

ITEM 10.

SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

There were no material changes to the procedures by which shareholders may send recommendations to the Board for nominees to the Registrant’s Board since the Registrant last provided disclosure as to such procedures in response to the requirements of Item 407 (c)(2)(iv) of Regulation S-K or this Item.

 

ITEM 11.

CONTROLS AND PROCEDURES.

 

(a)

Based upon their evaluation of the effectiveness of the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the “Act”)) as conducted within 90 days of the filing date of this report on Form N-CSR, the registrant’s principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms.

 

(b)

There were no changes in the registrant’s internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the period covered by the report that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

 

ITEM 12.

DISCLOSURE OF SECURITIES LENDING ACTIVITIES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

Not applicable to the Registrant.

 

ITEM 13.

EXHIBITS.

 

(a)    (1)

Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit: Attached hereto as EX-99.COE.

 

  (2)

A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2): Attached hereto as EX-99.302CERT.

 

  (3)

Any written solicitation to purchase securities under Rule 23c-1 under the Act (17 CFR 270.23c-1) sent or given during the period covered by the report by or on behalf of the registrant to 10 or more persons. Not applicable.


  (4)

Change in the registrant’s independent public accountant. Not applicable.

 

(b)

If the report is filed under Section 13(a) or 15(d) of the Exchange Act, provide the certifications required by Rule 30a-2(b) under the Act (17 CFR 270.30a-2(b)), Rule 13a-14(b) or Rule 15d-14(b) under the Exchange Act (17 CFR 240.13a-14(b) or 240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as an exhibit. A certification furnished pursuant to this paragraph will not be deemed “filed” for the purposes of Section 18 of the Exchange Act (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference. Attached hereto as EX-99.906CERT.


Notice  

A copy of the Amended and Restated Declaration of Trust, as amended, of the Registrant is on file with the Secretary of State of The Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant.


SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

(Registrant) MASSACHUSETTS INVESTORS TRUST

 

By (Signature and Title)*   /S/ DAVID L. DILORENZO
  David L. DiLorenzo, President

Date: February 16, 2021

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

 

By (Signature and Title)*   /S/ DAVID L. DILORENZO
 

David L. DiLorenzo, President

(Principal Executive Officer)

Date: February 16, 2021

 

By (Signature and Title)*   /S/ JAMES O. YOST
 

James O. Yost, Treasurer

(Principal Financial Officer and Accounting Officer)

Date: February 16, 2021

 

*

Print name and title of each signing officer under his or her signature.

LOGO

Code of Ethics for Principal Executive and Principal Financial Officers

Effective February 13, 2018

 

I.

Policy Purpose and Summary

Section 406 of the Sarbanes-Oxley Act requires that each MFS Fund registered under the Investment Company Act of 1940 disclose whether or not it has adopted a code of ethics for senior financial officers, applicable to its principal financial officer and principal accounting officer.

 

II.

Overview

 

  A.

Covered Officers/Purpose of the Code

This code of ethics (this “Code”) has been adopted by the funds (collectively, “Funds” and each, “Fund”) under supervision of the MFS Funds Board (the “Board”) and applies to the Funds’ Principal Executive Officer and Principal Financial Officer (the “Covered Officers” each of whom is set forth in Exhibit A) for the purpose of promoting:

 

   

honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships;

 

   

full, fair, accurate, timely and understandable disclosure in reports and documents that the Funds file with, or submit to, the Securities and Exchange Commission (“SEC”) and in other public communications made by the Funds;

 

   

compliance by the Funds with applicable laws and governmental rules and regulations;

 

   

the prompt internal reporting of violations of the Code to an appropriate person or persons identified in the Code; and

 

   

accountability for adherence to the Code.

 

  B.

Conduct Guidelines

Each Covered Officer should adhere to a high standard of business ethics and should be sensitive to situations that may give rise to actual as well as apparent conflicts of interest. In addition, each Covered Officer should not place his or her personal interests ahead of the Funds’ interests and should endeavor to act honestly and ethically. In furtherance of the foregoing, each Covered Officer must:

 

   

not use his or her personal influence or personal relationships improperly to influence investment decisions or financial reporting for any Fund whereby the Covered Officer would benefit personally to the detriment of the Fund; and


   

not cause a Fund to take action, or fail to take action, for the individual personal benefit of the Covered Officer rather than the benefit the Fund.

The following activities, which could create the appearance of a conflict of interest, are permitted only with the approval of the Funds’ Chief Legal Officer (“CLO”):

 

   

service as a director on the board of any “for profit” company other than the board of the Funds’ investment adviser or its subsidiaries or board of a pooled investment vehicle sponsored by the Funds’ investment adviser or its subsidiaries;

 

   

running for political office;

 

   

the receipt of any Fund business-related gift or any entertainment from any company with which a Fund has current or prospective business dealings unless such gift or entertainment is permitted by the gifts and entertainment policy of the Funds’ investment adviser;

 

   

any material ownership interest in, or any consulting or employment relationship with, any Fund service providers (e.g., custodian banks, audit firms), other than the Funds’ investment adviser, principal underwriter, administrator or any affiliated person thereof;

 

   

a direct or indirect financial interest in commissions, transaction charges or spreads paid by a Fund for effecting portfolio transactions or for selling or redeeming shares, other than an interest arising from the Covered Officer’s employment or securities ownership.

 

  C.

Disclosure and Compliance

 

   

Each Covered Officer should familiarize himself or herself with the disclosure requirements generally applicable to the Funds;

 

   

each Covered Officer should not knowingly misrepresent, or cause others to misrepresent, facts about a Fund to others, whether within or outside the Fund, including to the Fund’s trustees and auditors, and to governmental regulators and self-regulatory organizations;

 

   

each Covered Officer should, to the extent appropriate within his or her area of Fund responsibility, consult with other officers and employees of the Funds and the adviser with the goal of promoting full, fair, accurate, timely and understandable disclosure in the reports and documents the Funds file with, or submit to, the SEC and in other public communications made by the Funds; and

 

   

it is the responsibility of each Covered Officer to promote compliance within his or her area of Fund responsibility with the standards and restrictions imposed by applicable laws, rules and regulations.


  D.

Reporting and Accountability

Each Covered Officer must:

 

   

upon adoption of the Code (or thereafter as applicable, upon becoming a Covered Officer), affirm in writing to the Board that he or she has received, read, and understands the Code;

 

   

annually thereafter affirm to the Board that he or she has complied with the requirements of the Code;

 

   

annually report to the CLO affiliations and relationships which are or may raise the appearance of a conflict of interest with the Covered Officer’s duties to the Funds, as identified in the annual Trustee and Officer Questionnaire;

 

   

not retaliate against any other Covered Officer or any officer or employee of the Funds or their affiliated persons for reports of potential violations that are made in good faith; and

 

   

notify the CLO promptly if he or she knows of any violation of this Code. Failure to do so is itself a violation of this Code.

The CLO is responsible for applying this Code to specific situations in which questions are presented under it, granting waivers upon consultation with the Board or its designee, investigating violations, and has the authority to interpret this Code in any particular situation. The CLO will report requests for waivers to the Board (or a designee thereof) promptly upon receipt of a waiver request and will periodically report to the Board any approvals granted since the last report.

The CLO will take all appropriate action to investigate any potential violations reported to him or her and to report any violations to the Board. If the Board concurs that a violation has occurred, it will consider appropriate action, which may include review of, and appropriate modifications to, applicable policies and procedures; notification to appropriate personnel of the investment adviser or its board; or a recommendation to dismiss the Covered Officer.

Any changes to or waivers of this Code will, to the extent required, be disclosed as provided by SEC rules.

 

  E.

Confidentiality

All reports and records prepared or maintained pursuant to this Code and under the direction of the CLO will be considered confidential and shall be maintained and protected accordingly. Except as otherwise required by law or this Code, such matters shall not be disclosed to anyone other than the Funds’ Board, its counsel, counsel to the Board’s independent trustees and senior management and the board of directors of the Fund’s investment adviser and its counsel.


  F. 

Internal Use

The Code is intended solely for the internal use by the Funds and does not constitute an admission, by or on behalf of any Fund, as to any fact, circumstance, or legal conclusion.

 

III.

Supervision

The Board of Trustees of the Funds, including a majority of the Trustees who are not “interested persons” (as defined in the 1940 Act) of the Funds, shall review no less frequently than annually, a report from the CLO regarding the affirmations of the principal executive officer and the principal financial officer as to compliance with this Code.

 

IV.

Interpretation and Escalation

Breaches of the Code are reviewed by the CLO and communicated to the Board of Trustees of the affected Fund(s). Interpretations of this Policy shall be made from time to time by the CLO, as needed, and questions regarding the application of this Policy to a specific set of facts are escalated to the CLO.

 

V.

Authority

Section 406 of the Sarbanes-Oxley Act.

 

VI.

Monitoring

Adherence to this policy is monitored by the CLO.

 

VII.

Related Policies

This Code shall be the sole code of ethics adopted by the Funds for purposes of Section 406 of the Sarbanes-Oxley Act and the rules and forms applicable to registered investment companies thereunder. Insofar as other policies or procedures of the Funds, the Funds’ adviser, principal underwriter, or other service providers govern or purport to govern the behavior or activities of the Covered Officers who are subject to this Code, they are superseded by this Code to the extent that they overlap or conflict with the provisions of this Code. The Funds’ and their investment adviser’s codes of ethics under Rule 17j-1 under the Investment Company Act and any other codes or policies or procedures adopted by the Funds or their investment adviser or other service providers are separate requirements and are not part of this Code.

 

VIII.

Amendment

Any amendments to this Code, other than amendments to Exhibit A, must be approved or ratified by a majority vote of the Board, including a majority of independent trustees.

 

IX.

Recordkeeping

All required books, records and other documentation shall be retained in accordance with MFS’ related record retention policy.

Additional procedures may need to be implemented by departments to properly comply with this policy.


Exhibit A  

As of January 1, 2017

Persons Covered by this Code of Ethics

Funds’ Principal Executive Officer: David L. DiLorenzo

Funds’ Principal Financial Officer: James O. Yost

EX-99.302.CERT

MASSACHUSETTS INVESTORS TRUST

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT

I, James O. Yost, certify that:

 

1.

I have reviewed this report on Form N-CSR of Massachusetts Investors Trust;

 

2.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

 

3.

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

 

4.

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

 

  a.

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

 

  b.

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

 

  c.

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation; and

 

  d.

Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and


5.

The registrant’s other certifying officer and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

 

  a.

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

 

  b.

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

 

Date: February 16, 2021     /S/ JAMES O. YOST
    James O. Yost
   

Treasurer (Principal Financial Officer and

Accounting Officer)


EX-99.302CERT  

MASSACHUSETTS INVESTORS TRUST

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT

I, David L. DiLorenzo, certify that:

 

1.

I have reviewed this report on Form N-CSR of Massachusetts Investors Trust;

 

2.

Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

 

3.

Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the periods presented in this report;

 

4.

The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

 

  a.

Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

 

  b.

Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

 

  c.

Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of a date within 90 days prior to the filing date of this report based on such evaluation; and

 

  d.

Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and


5.

The registrant’s other certifying officer and I have disclosed to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

 

  a.

All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize, and report financial information; and

 

  b.

Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

 

Date: February 16, 2021     /S/ DAVID L. DILORENZO
    David L. DiLorenzo
    President (Principal Executive Officer)

EX-99.906CERT

MASSACHUSETTS INVESTORS TRUST

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

I, James O. Yost, certify that, to my knowledge:

 

1.

The Form N-CSR (the “Report”) of Massachusetts Investors Trust (the “Registrant”) fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

 

2.

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

 

Date: February 16, 2021     /S/ JAMES O. YOST
    James O. Yost
   

Treasurer (Principal Financial Officer and

Accounting Officer)

A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.


EX-99.906CERT

MASSACHUSETTS INVESTORS TRUST

CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT

I, David L. DiLorenzo, certify that, to my knowledge:

 

1.

The Form N-CSR (the “Report”) of Massachusetts Investors Trust (the “Registrant”) fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

 

2.

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

 

Date: February 16, 2021     /S/ DAVID L. DILORENZO
    David L. DiLorenzo
    President (Principal Executive Officer)

A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.