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 811-21780
MFS SERIES TRUST XII
(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: April 30
Date of reporting period: April 30, 2021
| ITEM 1. | REPORTS TO STOCKHOLDERS. |
Item 1(a):
Annual Report
April 30, 2021
MFS® Lifetime® Income Fund
MFS® Lifetime® 2020 Fund
MFS® Lifetime® 2025 Fund
MFS® Lifetime® 2030 Fund
MFS® Lifetime® 2035 Fund
MFS® Lifetime® 2040 Fund
MFS® Lifetime® 2045 Fund
MFS® Lifetime® 2050 Fund
MFS® Lifetime® 2055 Fund
MFS® Lifetime® 2060 Fund
| 1 |
| 2 |
| 12 |
| 17 |
| 38 |
| 49 |
| 60 |
| 66 |
| 68 |
| 70 |
| 122 |
| 159 |
| 160 |
| 163 |
| 164 |
| 164 |
| 164 |
| 164 |
| 164 |
| 166 |
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
Dear Shareholders:
Markets have experienced dramatic swings since the coronavirus pandemic brought the global economy to a standstill for several months early in 2020. While the speedy development of vaccines brightened the economic and market outlook, uncertainty remains as new variants of the virus appear and questions persist over how fast vaccines can be made widely available in the developing world.
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. Having passed a $1.9 trillion stimulus package in March, the U.S. Congress is expected to approve additional stimulus later this year, some of it focused on infrastructure. Along with extraordinary government expenditures, pent-up consumer demand has fueled a surge in economic activity as coronavirus restrictions have been eased. Because of this, inflation pressures are being felt, and markets have pushed up yields on global government bonds, resulting in ripple effects across many financial markets.
A spirited debate is underway among investors over whether the current price pressures will persist or prove to be temporary, the consequence of pandemic-induced bottlenecks. The policy measures put in place to counteract the pandemic's effects 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, recent dramatic increases in speculative trading in cryptocurrencies, special-purpose acquisition companies (SPACs), and the like, 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 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
June 15, 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.
Portfolio Composition
MFS Lifetime Income Fund
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Limited Maturity Fund | 19.7% |
| MFS Total Return Bond Fund | 19.7% |
| MFS Inflation-Adjusted Bond Fund | 9.9% |
| MFS Government Securities Fund | 9.9% |
| MFS Global Opportunistic Bond Fund | 4.9% |
| MFS Blended Research Mid Cap Equity Fund | 3.1% |
| MFS High Income Fund | 3.0% |
| MFS Blended Research International Equity Fund | 2.5% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Research Fund | 2.1% |
| MFS Global Real Estate Fund | 2.1% |
| MFS Blended Research Core Equity Fund | 2.1% |
| MFS Blended Research Value Equity Fund | 2.1% |
| MFS Value Fund | 2.1% |
| MFS Growth Fund | 2.0% |
| MFS Blended Research Growth Equity Fund | 2.0% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS New Discovery Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Growth Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| Cash & Cash Equivalents | 0.2% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Total Return Bond Fund | 20.1% |
| MFS Limited Maturity Fund | 20.0% |
| MFS Government Securities Fund | 10.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 3.0% |
| MFS Blended Research Mid Cap Equity Fund | 2.9% |
| MFS Blended Research International Equity Fund | 2.4% |
| MFS Emerging Markets Debt Fund | 2.0% |
| MFS Value Fund | 2.0% |
| MFS Commodity Strategy Fund | 2.0% |
| MFS Blended Research Value Equity Fund | 2.0% |
| MFS Research Fund | 2.0% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Blended Research Core Equity Fund | 2.0% |
| MFS Blended Research Growth Equity Fund | 2.0% |
| MFS Growth Fund | 2.0% |
| MFS Mid Cap Value Fund | 1.5% |
| MFS Mid Cap Growth Fund | 1.5% |
| MFS Research International Fund | 1.5% |
| MFS Emerging Markets Debt Local Currency Fund | 1.0% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS New Discovery Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| MFS International Intrinsic Value Fund | 0.5% |
| MFS International Growth Fund | 0.5% |
| Cash & Cash Equivalents | 0.1% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Total Return Bond Fund | 15.5% |
| MFS Limited Maturity Fund | 11.0% |
| MFS Inflation-Adjusted Bond Fund | 10.0% |
| MFS Government Securities Fund | 9.9% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS High Income Fund | 4.8% |
| MFS Blended Research Mid Cap Equity Fund | 3.9% |
| MFS Blended Research International Equity Fund | 3.8% |
| MFS Value Fund | 2.9% |
| MFS Blended Research Value Equity Fund | 2.9% |
| MFS Research Fund | 2.9% |
| MFS Blended Research Core Equity Fund | 2.9% |
| MFS Growth Fund | 2.9% |
| MFS Emerging Markets Debt Fund | 2.9% |
| MFS Blended Research Growth Equity Fund | 2.9% |
| MFS Commodity Strategy Fund | 2.1% |
| MFS Global Real Estate Fund | 2.0% |
| MFS Mid Cap Value Fund | 2.0% |
| MFS Mid Cap Growth Fund | 1.9% |
| MFS Research International Fund | 1.9% |
| MFS Emerging Markets Debt Local Currency Fund | 1.9% |
| MFS Blended Research Small Cap Equity Fund | 1.0% |
| MFS International Growth Fund | 1.0% |
| MFS International Intrinsic Value Fund | 0.9% |
| MFS New Discovery Value Fund | 0.5% |
| MFS New Discovery Fund | 0.5% |
| Cash & Cash Equivalents | 0.1% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Government Securities Fund | 9.9% |
| MFS Total Return Bond Fund | 8.8% |
| MFS Inflation-Adjusted Bond Fund | 7.3% |
| MFS Blended Research Mid Cap Equity Fund | 6.7% |
| MFS Blended Research International Equity Fund | 5.7% |
| MFS High Income Fund | 5.0% |
| MFS Global Opportunistic Bond Fund | 5.0% |
| MFS Blended Research Value Equity Fund | 3.9% |
| MFS Research Fund | 3.9% |
| MFS Value Fund | 3.9% |
| MFS Blended Research Core Equity Fund | 3.9% |
| MFS Growth Fund | 3.9% |
| MFS Blended Research Growth Equity Fund | 3.9% |
| MFS Mid Cap Value Fund | 3.4% |
| MFS Mid Cap Growth Fund | 3.3% |
| MFS Emerging Markets Debt Fund | 3.0% |
| MFS Commodity Strategy Fund | 2.9% |
| MFS Global Real Estate Fund | 2.9% |
| MFS Research International Fund | 2.9% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 1.5% |
| MFS International Growth Fund | 1.4% |
| MFS International Intrinsic Value Fund | 1.4% |
| MFS Limited Maturity Fund | 1.1% |
| MFS International New Discovery Fund | 0.9% |
| MFS New Discovery Value Fund | 0.7% |
| MFS New Discovery Fund | 0.7% |
| Cash & Cash Equivalents | 0.1% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Blended Research Mid Cap Equity Fund | 8.8% |
| MFS Blended Research International Equity Fund | 8.1% |
| MFS Growth Fund | 5.4% |
| MFS Blended Research Value Equity Fund | 5.4% |
| MFS Value Fund | 5.3% |
| MFS Blended Research Growth Equity Fund | 5.3% |
| MFS Inflation-Adjusted Bond Fund | 5.2% |
| MFS High Income Fund | 5.0% |
| MFS Mid Cap Value Fund | 4.4% |
| MFS Mid Cap Growth Fund | 4.4% |
| MFS Research Fund | 4.0% |
| MFS Commodity Strategy Fund | 4.0% |
| MFS Blended Research Core Equity Fund | 4.0% |
| MFS Global Real Estate Fund | 3.9% |
| MFS Total Return Bond Fund | 3.5% |
| MFS Research International Fund | 3.4% |
| MFS Emerging Markets Debt Fund | 3.0% |
| MFS International Growth Fund | 2.4% |
| MFS International Intrinsic Value Fund | 2.4% |
| MFS Global Opportunistic Bond Fund | 2.3% |
| MFS Emerging Markets Debt Local Currency Fund | 2.0% |
| MFS Blended Research Small Cap Equity Fund | 1.9% |
| MFS International New Discovery Fund | 1.9% |
| MFS Government Securities Fund | 1.1% |
| MFS New Discovery Fund | 1.0% |
| MFS New Discovery Value Fund | 1.0% |
| MFS Blended Research Emerging Markets Equity Fund | 0.4% |
| MFS Emerging Markets Equity Fund | 0.4% |
| Cash & Cash Equivalents | 0.1% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Blended Research International Equity Fund | 9.5% |
| MFS Blended Research Mid Cap Equity Fund | 9.5% |
| MFS Blended Research Value Equity Fund | 5.8% |
| MFS Value Fund | 5.8% |
| MFS Growth Fund | 5.8% |
| MFS Blended Research Growth Equity Fund | 5.7% |
| MFS Mid Cap Value Fund | 4.8% |
| MFS Mid Cap Growth Fund | 4.7% |
| MFS Commodity Strategy Fund | 4.5% |
| MFS Global Real Estate Fund | 4.5% |
| MFS Research Fund | 4.0% |
| MFS Blended Research Core Equity Fund | 4.0% |
| MFS Inflation-Adjusted Bond Fund | 3.9% |
| MFS Research International Fund | 3.7% |
| MFS International Growth Fund | 2.9% |
| MFS International Intrinsic Value Fund | 2.9% |
| MFS International New Discovery Fund | 2.9% |
| MFS High Income Fund | 2.8% |
| MFS Total Return Bond Fund | 2.7% |
| MFS Blended Research Small Cap Equity Fund | 2.2% |
| MFS Emerging Markets Debt Fund | 1.6% |
| MFS New Discovery Value Fund | 1.1% |
| MFS New Discovery Fund | 1.1% |
| MFS Emerging Markets Debt Local Currency Fund | 1.1% |
| MFS Global Opportunistic Bond Fund | 1.1% |
| MFS Blended Research Emerging Markets Equity Fund | 0.7% |
| MFS Emerging Markets Equity Fund | 0.7% |
| Cash & Cash Equivalents (o) | 0.0% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Blended Research International Equity Fund | 10.8% |
| MFS Blended Research Mid Cap Equity Fund | 9.9% |
| MFS Value Fund | 6.0% |
| MFS Blended Research Value Equity Fund | 6.0% |
| MFS Blended Research Growth Equity Fund | 6.0% |
| MFS Growth Fund | 6.0% |
| MFS Commodity Strategy Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Growth Fund | 4.9% |
| MFS Research Fund | 4.0% |
| MFS Blended Research Core Equity Fund | 4.0% |
| MFS Research International Fund | 3.9% |
| MFS International New Discovery Fund | 3.9% |
| MFS International Growth Fund | 3.4% |
| MFS International Intrinsic Value Fund | 3.4% |
| MFS Inflation-Adjusted Bond Fund | 2.6% |
| MFS Total Return Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS New Discovery Value Fund | 1.2% |
| MFS New Discovery Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 1.0% |
| MFS High Income Fund | 0.3% |
| MFS Emerging Markets Debt Fund | 0.2% |
| MFS Emerging Markets Debt Local Currency Fund | 0.1% |
| MFS Global Opportunistic Bond Fund | 0.1% |
| Cash & Cash Equivalents | 0.1% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Blended Research International Equity Fund | 10.9% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 6.0% |
| MFS Blended Research Value Equity Fund | 6.0% |
| MFS Growth Fund | 6.0% |
| MFS Blended Research Growth Equity Fund | 6.0% |
| MFS Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Research Fund | 4.0% |
| MFS Blended Research Core Equity Fund | 4.0% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.4% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS New Discovery Value Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 1.0% |
| Cash & Cash Equivalents | 0.1% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Blended Research International Equity Fund | 10.9% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Blended Research Value Equity Fund | 6.0% |
| MFS Value Fund | 6.0% |
| MFS Growth Fund | 6.0% |
| MFS Blended Research Growth Equity Fund | 6.0% |
| MFS Commodity Strategy Fund | 5.1% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Research Fund | 4.0% |
| MFS Blended Research Core Equity Fund | 4.0% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.4% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS New Discovery Fund | 1.3% |
| MFS New Discovery Value Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 1.0% |
| Cash & Cash Equivalents | 0.1% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Portfolio Composition - continued
Portfolio target allocation
Portfolio actual allocation
Portfolio holdings
| MFS Blended Research International Equity Fund | 10.9% |
| MFS Blended Research Mid Cap Equity Fund | 10.0% |
| MFS Value Fund | 6.0% |
| MFS Blended Research Value Equity Fund | 6.0% |
| MFS Blended Research Growth Equity Fund | 6.0% |
| MFS Growth Fund | 6.0% |
| MFS Commodity Strategy Fund | 5.1% |
| MFS Mid Cap Value Fund | 5.0% |
| MFS Global Real Estate Fund | 5.0% |
| MFS Mid Cap Growth Fund | 5.0% |
| MFS Research Fund | 4.0% |
| MFS Blended Research Core Equity Fund | 4.0% |
| MFS Research International Fund | 4.0% |
| MFS International New Discovery Fund | 4.0% |
| MFS International Growth Fund | 3.5% |
| MFS International Intrinsic Value Fund | 3.5% |
| MFS Total Return Bond Fund | 2.5% |
| MFS Inflation-Adjusted Bond Fund | 2.5% |
| MFS Blended Research Small Cap Equity Fund | 2.5% |
| MFS New Discovery Value Fund | 1.3% |
| MFS New Discovery Fund | 1.2% |
| MFS Blended Research Emerging Markets Equity Fund | 1.0% |
| MFS Emerging Markets Equity Fund | 1.0% |
| Cash & Cash Equivalents (o) | 0.0% |
Cash & Cash Equivalents includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. MFS endeavors to fully invest all MFS funds-of-funds in underlying funds on a daily basis. Any divergence from 0.0% in Cash & Cash Equivalents is typically due to the timing of fund subscriptions/redemptions and the settlement of subsequent investment in/divestment from the underlying funds. While the MFS funds-of-funds' subscriptions/redemptions are processed at the same day NAV of the underlying funds, a positive/negative cash balance will be reflected on the MFS funds-of-funds' Statements of Assets and Liabilities until the trades with the underlying funds settle, which is typically two business days. Please see the Statements 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 April 30, 2021.
The portfolio is actively managed and current holdings may be different.
Management Review
MFS Lifetime Funds
Market Environment
After experiencing an abrupt decline in response to the initial wave of the coronavirus pandemic, markets staged a sharp rally that took global equities to record highs near the end of the period. Central banks and fiscal authorities undertook astonishing levels of stimulus to offset the economic effects of government-imposed social-distancing measures meant to slow the spread of the virus. At this point, the global economy looks to have experienced the shortest — albeit the deepest — recession in the postwar period. However, its recovery remains subject to a number of uncertainties as the rollout of coronavirus vaccines remains highly variable in different countries. Even the distribution of vaccines in developed economies has been sluggish due to supply constraints and concerns over potential side effects. In some jurisdictions, there remain worries over whether enough people will get vaccinated to bring about herd immunity.
Around the world, central banks responded quickly and massively to the crisis with programs to improve liquidity and support markets. These undertakings proved largely successful in helping to restore market function, ease volatility and stimulate a prolonged rebound. In the middle of 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. 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.
Late in the period, we saw the threat of resurgent inflation resulting from monumental levels of economic stimulus and the unleashing of pandemic-induced pent-up demand. Meanwhile, raw materials prices rebounded strongly on account of the surprising resilience of the global manufacturing sector during the pandemic. In response to these factors, global government bond yields have risen materially in recent months and market leadership has shifted from a handful of mega-cap technology companies to a broader array of small-cap and value stocks. At the same time, signs of excess investor enthusiasm have been seen in pockets of the market, such as stocks that are popular with the users of online message boards and equities issued by special purpose acquisition companies (SPACs).
MFS Lifetime Income Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime Income Fund (fund) provided a total return of 16.01%, at net asset value. This compares with a return of -0.27% for the fund’s benchmark, the Bloomberg Barclays U.S. Aggregate Bond Index. The fund’s other benchmark, the MFS Lifetime Income Fund Blended Index (Blended Index), generated a return of 11.33%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. However, within the fixed income segment, the fund’s broad diversification across funds was a notable contributor to relative performance, as diversification away from the US rates market and into the credit and global markets generally benefited performance. Further, underlying funds that were overweight credit versus their respective market segments, such as the MFS Limited Maturity Fund and the MFS Total Return Bond Fund, were among the fund’s top relative contributors. Investments in the MFS Inflation-Adjusted Bond Fund also added value to the fund’s relative performance during the reporting period.
Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to both specialty funds and international stock funds strengthened relative performance. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative results as the fund outperformed the commodity market segment during the reporting period. Within the international stock funds segment, the MFS Blended Research International Equity Fund was a primary contributor to relative returns as the fund outperformed its respective market segment.
MFS Lifetime 2020 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2020 Fund (fund) provided a total return of 16.02%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2020 Fund Blended Index (Blended Index), generated a return of 11.43%. The
Management Review - continued
Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. However, within the fixed income segment, the fund’s broad diversification across funds was a notable contributor to relative performance, as diversification away from the US rates market and into the credit and global markets generally benefited performance. Further, underlying funds that were overweight credit versus their respective market segments, such as the MFS Limited Maturity Fund and the MFS Total Return Bond Fund, were among the fund’s top relative contributors. Investments in the MFS Inflation-Adjusted Bond Fund also added value to the fund’s relative performance during the reporting period.
Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to specialty funds and international stock funds strengthened relative performance. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative results as the fund outperformed the commodity market segment during the reporting period. Within the international stock funds segment, the MFS Blended Research International Equity Fund was a primary contributor to relative returns as the fund outperformed its respective market segment.
MFS Lifetime 2025 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2025 Fund (fund) provided a total return of 20.70%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2025 Fund Blended Index (Blended Index), generated a return of 16.01%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. However, within the fixed income segment, the fund’s broad diversification across funds was a notable contributor to relative performance, as diversification away from the US rates market and into the credit and global markets generally benefited performance. Further, underlying funds that were overweight credit versus their respective market segments, such as the MFS Total Return Bond Fund and the MFS High Income Fund, were among the fund’s top relative contributors. Investments in the MFS Inflation-Adjusted Bond Fund also added value to the fund’s relative performance during the reporting period.
Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to specialty funds and international stock funds strengthened relative performance. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative results as the fund outperformed the commodity market segment during the reporting period. Within the international stock funds segment, the MFS Blended Research International Equity Fund was a primary contributor to relative returns as the fund outperformed its respective market segment.
MFS Lifetime 2030 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2030 Fund (fund) provided a total return of 29.17%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2030 Fund Blended Index (Blended Index), generated a return of 24.71%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Management Review - continued
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. However, within the fixed income segment, most of the fund's underlying investments outperformed their respective market segments during the reporting period. The fund’s diversification into the credit and global markets generally contributed to performance. Further, underlying funds that were overweight credit versus their respective market segments, such as the MFS High Income Bond Fund and the MFS Global Opportinistic Bond Fund, were among the fund’s top relative contributors. Investments in the MFS Inflation-Adjusted Bond Fund also added value to the fund’s relative performance during the reporting period.
Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to international stock funds and specialty funds strengthened relative performance. Within the international stock funds segment, the MFS Blended Research International Equity Fund helped relative returns as the fund outperformed the broader global equity markets. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative performance as the fund outperformed the commodity market segment during the reporting period.
MFS Lifetime 2035 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2035 Fund (fund) provided a total return of 38.48%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2035 Fund Blended Index (Blended Index), generated a return of 33.85%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. However, within the fixed income segment, most of the fund's underlying investments outperformed their respective market segments during the reporting period. The fund’s diversification into the credit and global markets generally benefited performance. Further, underlying funds that were overweight credit versus their respective market segments, such as the the MFS High Income Bond Fund and the MFS Global Opportunistic Bond Fund, were among the fund’s top relative contributors. Investments in the MFS Inflation-Adjusted Bond Fund also added value to the fund’s relative performance during the reporting period.
Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to both international stock funds and specialty funds strengthened relative performance. Within the international stock funds segment, the MFS Blended Research International Equity Fund helped relative returns as the fund outperformed the broader global equity markets. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative performance as the fund outperformed the commodity market segment during the reporting period.
MFS Lifetime 2040 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2040 Fund (fund) provided a total return of 41.38%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2040 Fund Blended Index (Blended Index), generated a return of 37.60%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
Management Review - continued
Within the fixed income segment, most of the fund's underlying investments outperformed their respective market segments during the reporting period. The fund’s diversification into the credit and global markets generally benefited performance. Further, underlying funds that were overweight credit versus their respective market segments, such as the MFS High Income Bond Fund and the MFS Total Return Bond Fund, were among the fund’s top relative contributors. Investments in the MFS Inflation-Adjusted Bond Fund also added value to the fund’s relative performance during the reporting period.
The fund’s allocation to international stock funds and specialty funds strengthened relative performance. Within the international stock funds segment, the MFS Blended Research International Equity Fund helped relative returns as the fund outperformed the broader global equity markets. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative performance as the fund outperformed the commodity market segment during the reporting period.
MFS Lifetime 2045 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2045 Fund (fund) provided a total return of 44.10%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2045 Fund Blended Index (Blended Index), generated a return of 41.12%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to specialty funds and international stock funds strengthened relative performance. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative results as the fund outperformed the commodity market segment during the reporting period. Within the international stock funds segment, the MFS Blended Research International Equity Fund helped relative returns as the fund outperformed the broader global equity markets.
Within the fixed income segment of the fund, the fund’s diversification into the credit and global markets generally aided performance. Further, underlying funds that were overweight credit versus their respective market segments, such as the MFS Total Return Bond Fund, were among the fund’s top relative contributors. Investments in the MFS Inflation-Adjusted Bond Fund also added value to the fund's relative performance during the reporting period.
MFS Lifetime 2050 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2050 Fund (fund) provided a total return of 44.17%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2050 Fund Blended Index (Blended Index), generated a return of 41.25%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to specialty funds and international stock funds strengthened relative performance. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative results as the fund outperformed the commodity market segment during the reporting period. Within the international stock funds segment, the MFS Blended Research International Equity Fund helped relative returns as the fund outperformed the broader global equity markets.
Within the fixed income segment, the fund's investments in both the MFS Inflation-Adjusted Bond Fund and MFS Total Return Bond Fund added value to the fund’s relative performance during the reporting period.
Management Review - continued
MFS Lifetime 2055 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2055 Fund (fund) provided a total return of 44.11%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2055 Fund Blended Index (Blended Index), generated a return of 41.25%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to specialty funds and international stock funds strengthened relative performance. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative results as the fund outperformed the commodity market segment during the reporting period. Within the international stock funds segment, the MFS Blended Research International Equity Fund helped relative returns as the fund outperformed the broader global equity markets.
Within the fixed income segment, the fund's investments in both the MFS Inflation-Adjusted Bond Fund and MFS Total Return Bond Fund added value to the fund’s relative performance during the reporting period.
MFS Lifetime 2060 Fund
Summary of Results
For the twelve months ended April 30, 2021, Class A shares of the MFS Lifetime 2060 Fund (fund) provided a total return of 44.39%, at net asset value. This compares with a return of 45.98% for the fund’s benchmark, the Standard & Poor’s 500 Stock Index. The fund’s other benchmark, the MFS Lifetime 2060 Fund Blended Index (Blended Index), generated a return of 41.25%. The Blended Index reflects the blended returns of equity and fixed income market indices, with percentage allocations to each index designed to resemble the equity and fixed income allocations of the fund. The market indices and related percentage allocations used to compile the Blended Index are set forth in the Performance Summary.
Factors Affecting Performance
During the reporting period, on an absolute basis, equity markets outperformed fixed income markets. Within the US stock funds segment, the fund’s investments in middle and small capitalization strategies, such as the MFS Blended Research Mid Cap Equity Fund and MFS Blended Research Small Cap Equity Fund, contributed to relative performance. Investments in value funds, such as the MFS Mid Cap Value Fund and MFS New Discovery Value Fund, also helped.
The fund’s allocation to specialty funds and international stock funds strengthened relative performance. Within the specialty funds segment, the MFS Commodity Strategy Fund supported relative results as the fund outperformed the commodity market segment during the reporting period. Within the international stock funds segment, the MFS Blended Research International Equity Fund helped relative returns as the fund outperformed the broader global equity markets.
Within the fixed income segment, the fund's investments in both the MFS Inflation-Adjusted Bond Fund and MFS Total Return Bond Fund added value to the fund’s relative performance during the reporting period.
Respectfully,
Portfolio Manager(s)
Joseph Flaherty and Natalie Shapiro
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.
Performance Summary THROUGH 4/30/21
The following charts illustrate a representative class of each 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.
MFS Lifetime Income Fund
Growth of a Hypothetical $10,000 Investment
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | 10-yr | Life (t) |
| A | 9/29/05 | 16.01% | 6.48% | 5.16% | N/A |
| B | 9/29/05 | 15.16% | 5.69% | 4.37% | N/A |
| C | 9/29/05 | 15.17% | 5.67% | 4.37% | N/A |
| I | 9/29/05 | 16.30% | 6.74% | 5.42% | N/A |
| R1 | 9/29/05 | 15.15% | 5.68% | 4.38% | N/A |
| R2 | 9/29/05 | 15.73% | 6.21% | 4.89% | N/A |
| R3 | 9/29/05 | 16.01% | 6.48% | 5.16% | N/A |
| R4 | 9/29/05 | 16.30% | 6.74% | 5.42% | N/A |
| R6 | 8/29/16 | 16.44% | N/A | N/A | 6.73% |
| 529A | 1/08/15 | 15.95% | 6.45% | N/A | 5.50% |
| 529B | 1/08/15 | 15.63% | 5.75% | N/A | 4.80% |
| 529C | 1/08/15 | 15.20% | 5.65% | N/A | 4.72% |
Comparative benchmark(s)
| | | | | |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 3.39% | N/A |
| MFS Lifetime Income Fund Blended Index (f)(z) | 11.33% | 6.45% | 5.72% | N/A |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (5.85)% | N/A |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 5.88% | N/A |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 5.22% | N/A |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 14.17% | N/A |
Performance Summary - continued
With sales charge
| | 1-yr | 5-yr | 10-yr | Life (t) |
A
With Initial Sales Charge (4.25%) | 11.08% | 5.56% | 4.71% | N/A |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 11.16% | 5.36% | 4.37% | N/A |
C
With CDSC (1% for 12 months) (v) | 14.17% | 5.67% | 4.37% | N/A |
529A
With Initial Sales Charge (4.25%) | 11.02% | 5.53% | N/A | 4.78% |
529B
With CDSC (Declining over six years from 4% to 0%) (v) | 11.63% | 5.43% | N/A | 4.80% |
529C
With CDSC (1% for 12 months) (v) | 14.20% | 5.65% | N/A | 4.72% |
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. |
| (z) | The weights of the components of the blended benchmark (MFS Lifetime Income Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Bloomberg Barclays U.S. Aggregate Bond Index | 71.00% | 71.00% |
| Standard & Poor’s 500 Stock Index | 20.00% | 20.00% |
| MSCI EAFE Index (net div) | 5.00% | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% | 2.00% |
| Bloomberg Commodity Index | 2.00% | 2.00% |
Performance Summary - continued
MFS Lifetime 2020 Fund
Growth of a Hypothetical $10,000 Investment
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | 10-yr | Life (t) |
| A | 9/29/05 | 16.02% | 6.97% | 5.91% | N/A |
| B | 9/29/05 | 15.15% | 6.17% | 5.13% | N/A |
| C | 9/29/05 | 15.21% | 6.17% | 5.12% | N/A |
| I | 9/29/05 | 16.35% | 7.25% | 6.19% | N/A |
| R1 | 9/29/05 | 15.19% | 6.16% | 5.12% | N/A |
| R2 | 9/29/05 | 15.72% | 6.70% | 5.65% | N/A |
| R3 | 9/29/05 | 16.07% | 6.97% | 5.91% | N/A |
| R4 | 9/29/05 | 16.36% | 7.23% | 6.18% | N/A |
| R6 | 8/29/16 | 16.49% | N/A | N/A | 7.12% |
Comparative benchmark(s)
| | | | | |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 14.17% | N/A |
| MFS Lifetime 2020 Fund Blended Index (f)(z) | 11.43% | 6.90% | 6.29% | N/A |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 3.39% | N/A |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (5.85)% | N/A |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 5.88% | N/A |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 5.22% | N/A |
With sales charge
| | | | | |
A
With Initial Sales Charge (5.75%) | 9.35% | 5.71% | 5.29% | N/A |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 11.15% | 5.85% | 5.13% | N/A |
C
With CDSC (1% for 12 months) (v) | 14.21% | 6.17% | 5.12% | 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. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2020 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Bloomberg Barclays U.S. Aggregate Bond Index | 71.00% | 69.90% |
| Standard & Poor’s 500 Stock Index | 20.00% | 20.80% |
| MSCI EAFE Index (net div) | 5.00% | 5.30% |
| Bloomberg Commodity Index | 2.00% | 2.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% | 2.00% |
Performance Summary - continued
MFS Lifetime 2025 Fund
Growth of a Hypothetical $10,000 Investment (t)
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | Life (t) |
| A | 11/02/12 | 20.70% | 8.62% | 8.00% |
| B | 11/02/12 | 19.83% | 7.79% | 7.18% |
| C | 11/02/12 | 19.86% | 7.79% | 7.18% |
| I | 11/02/12 | 21.10% | 8.88% | 8.26% |
| R1 | 11/02/12 | 19.78% | 7.78% | 7.17% |
| R2 | 11/02/12 | 20.43% | 8.32% | 7.71% |
| R3 | 11/02/12 | 20.74% | 8.60% | 7.98% |
| R4 | 11/02/12 | 21.06% | 8.88% | 8.25% |
| R6 | 8/29/16 | 21.17% | N/A | 8.69% |
Comparative benchmark(s)
| | | | |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 15.80% |
| MFS Lifetime 2025 Fund Blended Index (f)(z) | 16.01% | 8.48% | 8.17% |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 2.80% |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (4.60)% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 6.22% |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 7.56% |
With sales charge
| | | | |
A
With Initial Sales Charge (5.75%) | 13.76% | 7.34% | 7.25% |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 15.83% | 7.50% | 7.18% |
C
With CDSC (1% for 12 months) (v) | 18.86% | 7.79% | 7.18% |
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. The comparative benchmark performance information provided for the “life” period is from the inception date of the Class A shares. (See Notes to Performance Summary.) |
| (v) | Assuming redemption at the end of the applicable period. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2025 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Bloomberg Barclays U.S. Aggregate Bond Index | 61.10% | 58.00% |
| Standard & Poor’s 500 Stock Index | 27.20% | 29.30% |
| MSCI EAFE Index (net div) | 7.70% | 8.50% |
| Bloomberg Commodity Index | 2.00% | 2.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.00% | 2.10% |
Performance Summary - continued
MFS Lifetime 2030 Fund
Growth of a Hypothetical $10,000 Investment
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | 10-yr | Life (t) |
| A | 9/29/05 | 29.17% | 10.79% | 8.40% | N/A |
| B | 9/29/05 | 28.24% | 9.97% | 7.60% | N/A |
| C | 9/29/05 | 28.24% | 9.97% | 7.59% | N/A |
| I | 9/29/05 | 29.48% | 11.01% | 8.65% | N/A |
| R1 | 9/29/05 | 28.21% | 9.96% | 7.59% | N/A |
| R2 | 9/29/05 | 28.84% | 10.52% | 8.13% | N/A |
| R3 | 9/29/05 | 29.18% | 10.80% | 8.40% | N/A |
| R4 | 9/29/05 | 29.58% | 11.07% | 8.67% | N/A |
| R6 | 8/29/16 | 29.71% | N/A | N/A | 10.86% |
Comparative benchmark(s)
| | | | | |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 14.17% | N/A |
| MFS Lifetime 2030 Fund Blended Index (f)(z) | 24.71% | 10.54% | 8.52% | N/A |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 3.39% | N/A |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (5.85)% | N/A |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 5.88% | N/A |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 5.22% | N/A |
With sales charge
| | | | | |
A
With Initial Sales Charge (5.75%) | 21.74% | 9.49% | 7.76% | N/A |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 24.24% | 9.70% | 7.60% | N/A |
C
With CDSC (1% for 12 months) (v) | 27.24% | 9.97% | 7.59% | 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. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2030 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Standard & Poor’s 500 Stock Index | 39.70% | 42.10% |
| Bloomberg Barclays U.S. Aggregate Bond Index | 42.00% | 38.00% |
| MSCI EAFE Index (net div) | 12.50% | 13.70% |
| Bloomberg Commodity Index | 2.90% | 3.10% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 2.90% | 3.10% |
Performance Summary - continued
MFS Lifetime 2035 Fund
Growth of a Hypothetical $10,000 Investment (t)
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | Life (t) |
| A | 11/02/12 | 38.48% | 12.31% | 10.76% |
| B | 11/02/12 | 37.44% | 11.47% | 9.93% |
| C | 11/02/12 | 37.40% | 11.46% | 9.94% |
| I | 11/02/12 | 38.83% | 12.52% | 11.01% |
| R1 | 11/02/12 | 37.27% | 11.42% | 9.91% |
| R2 | 11/02/12 | 38.06% | 12.00% | 10.48% |
| R3 | 11/02/12 | 38.44% | 12.29% | 10.76% |
| R4 | 11/02/12 | 38.82% | 12.59% | 11.04% |
| R6 | 8/29/16 | 39.08% | N/A | 12.44% |
Comparative benchmark(s)
| | | | |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 15.80% |
| MFS Lifetime 2035 Fund Blended Index (f)(z) | 33.85% | 12.01% | 10.75% |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 2.80% |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (4.60)% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 6.22% |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 7.56% |
With sales charge
| | | | |
A
With Initial Sales Charge (5.75%) | 30.52% | 10.99% | 9.99% |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 33.44% | 11.21% | 9.93% |
C
With CDSC (1% for 12 months) (v) | 36.40% | 11.46% | 9.94% |
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. The comparative benchmark performance information provided for the “life” period is from the inception date of the Class A shares. (See Notes to Performance Summary.) |
| (v) | Assuming redemption at the end of the applicable period. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2035 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Standard & Poor’s 500 Stock Index | 50.90% | 52.25% |
| MSCI EAFE Index (net div) | 19.30% | 20.40% |
| Bloomberg Barclays U.S. Aggregate Bond Index | 22.00% | 19.25% |
| Bloomberg Commodity Index | 3.90% | 4.05% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 3.90% | 4.05% |
Performance Summary - continued
MFS Lifetime 2040 Fund
Growth of a Hypothetical $10,000 Investment
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | 10-yr | Life (t) |
| A | 9/29/05 | 41.38% | 12.90% | 9.58% | N/A |
| B | 9/29/05 | 40.36% | 12.06% | 8.76% | N/A |
| C | 9/29/05 | 40.39% | 12.07% | 8.77% | N/A |
| I | 9/29/05 | 41.67% | 13.12% | 9.83% | N/A |
| R1 | 9/29/05 | 40.32% | 12.05% | 8.76% | N/A |
| R2 | 9/29/05 | 40.98% | 12.61% | 9.30% | N/A |
| R3 | 9/29/05 | 41.32% | 12.89% | 9.58% | N/A |
| R4 | 9/29/05 | 41.74% | 13.18% | 9.86% | N/A |
| R6 | 8/29/16 | 41.92% | N/A | N/A | 13.05% |
Comparative benchmark(s)
| | | | | |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 14.17% | N/A |
| MFS Lifetime 2040 Fund Blended Index (f)(z) | 37.60% | 12.61% | 9.56% | N/A |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 3.39% | N/A |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (5.85)% | N/A |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 5.88% | N/A |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 5.22% | N/A |
With sales charge
| | | | | |
A
With Initial Sales Charge (5.75%) | 33.26% | 11.57% | 8.94% | N/A |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 36.36% | 11.81% | 8.76% | N/A |
C
With CDSC (1% for 12 months) (v) | 39.39% | 12.07% | 8.77% | 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. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2040 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Standard & Poor's 500 Stock Index | 54.25% | 54.75% |
| MSCI EAFE Index (net div) | 23.60% | 24.40% |
| Bloomberg Barclays U.S. Aggregate Bond Index | 13.25% | 11.75% |
| Bloomberg Commodity Index | 4.45% | 4.55% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.45% | 4.55% |
Performance Summary - continued
MFS Lifetime 2045 Fund
Growth of a Hypothetical $10,000 Investment (t)
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | Life (t) |
| A | 11/02/12 | 44.10% | 13.22% | 11.42% |
| B | 11/02/12 | 42.95% | 12.37% | 10.57% |
| C | 11/02/12 | 43.01% | 12.36% | 10.57% |
| I | 11/02/12 | 44.43% | 13.52% | 11.69% |
| R1 | 11/02/12 | 42.98% | 12.35% | 10.56% |
| R2 | 11/02/12 | 43.65% | 12.92% | 11.12% |
| R3 | 11/02/12 | 44.05% | 13.21% | 11.40% |
| R4 | 11/02/12 | 44.39% | 13.50% | 11.67% |
| R6 | 8/29/16 | 44.58% | N/A | 13.38% |
Comparative benchmark(s)
| | | | |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 15.80% |
| MFS Lifetime 2045 Fund Blended Index (f)(z) | 41.12% | 12.97% | 11.36% |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 2.80% |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (4.60)% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 6.22% |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 7.56% |
With sales charge
| | | | |
A
With Initial Sales Charge (5.75%) | 35.82% | 11.88% | 10.65% |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 38.95% | 12.12% | 10.57% |
C
With CDSC (1% for 12 months) (v) | 42.01% | 12.36% | 10.57% |
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. The comparative benchmark performance information provided for the “life” period is from the inception date of the Class A shares. (See Notes to Performance Summary.) |
| (v) | Assuming redemption at the end of the applicable period. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2045 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Standard & Poor’s 500 Stock Index | 56.75% | 57.00% |
| MSCI EAFE Index (net div) | 27.60% | 28.00% |
| Bloomberg Barclays U.S. Aggregate Bond Index | 5.75% | 5.00% |
| Bloomberg Commodity Index | 4.95% | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 4.95% | 5.00% |
Performance Summary - continued
MFS Lifetime 2050 Fund
Growth of a Hypothetical $10,000 Investment (t)
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | 10-yr | Life (t) |
| A | 9/15/10 | 44.17% | 13.23% | 9.78% | N/A |
| B | 9/15/10 | 43.04% | 12.37% | 8.95% | N/A |
| C | 9/15/10 | 43.12% | 12.37% | 8.95% | N/A |
| I | 9/15/10 | 44.49% | 13.50% | 10.05% | N/A |
| R1 | 9/15/10 | 43.08% | 12.38% | 8.95% | N/A |
| R2 | 9/15/10 | 43.72% | 12.95% | 9.50% | N/A |
| R3 | 9/15/10 | 44.16% | 13.23% | 9.77% | N/A |
| R4 | 9/15/10 | 44.52% | 13.51% | 10.04% | N/A |
| R6 | 8/29/16 | 44.70% | N/A | N/A | 13.40% |
Comparative benchmark(s)
| | | | | |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 14.17% | N/A |
| MFS Lifetime 2050 Fund Blended Index (f)(z) | 41.25% | 13.00% | 9.75% | N/A |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 3.39% | N/A |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (5.85)% | N/A |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 5.88% | N/A |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 5.22% | N/A |
With sales charge
| | | | | |
A
With Initial Sales Charge (5.75%) | 35.88% | 11.89% | 9.13% | N/A |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 39.04% | 12.12% | 8.95% | N/A |
C
With CDSC (1% for 12 months) (v) | 42.12% | 12.37% | 8.95% | 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. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2050 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Standard & Poor’s 500 Stock Index | 57.00% | 57.00% |
| MSCI EAFE Index (net div) | 28.00% | 28.00% |
| Bloomberg Barclays U.S. Aggregate Bond Index | 5.00% | 5.00% |
| Bloomberg Commodity Index | 5.00% | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% | 5.00% |
Performance Summary - continued
MFS Lifetime 2055 Fund
Growth of a Hypothetical $10,000 Investment (t)
Average annual total returns through 4/30/21
Without sales charge
| Share Class | Class Inception Date | 1-yr | 5-yr | Life (t) |
| A | 11/02/12 | 44.11% | 13.20% | 11.41% |
| B | 11/02/12 | 43.06% | 12.36% | 10.58% |
| C | 11/02/12 | 43.08% | 12.36% | 10.58% |
| I | 11/02/12 | 44.42% | 13.39% | 11.64% |
| R1 | 11/02/12 | 43.16% | 12.37% | 10.58% |
| R2 | 11/02/12 | 43.78% | 12.93% | 11.13% |
| R3 | 11/02/12 | 44.10% | 13.21% | 11.41% |
| R4 | 11/02/12 | 44.49% | 13.49% | 11.69% |
| R6 | 8/29/16 | 44.75% | N/A | 13.40% |
Comparative benchmark(s)
| | | | |
| Standard & Poor’s 500 Stock Index (f) | 45.98% | 17.42% | 15.80% |
| MFS Lifetime 2055 Fund Blended Index (f)(z) | 41.25% | 13.00% | 11.37% |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.19% | 2.80% |
| Bloomberg Commodity Index (f) | 48.52% | 2.26% | (4.60)% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 5.18% | 6.22% |
| MSCI EAFE Index (net div) (f) | 39.88% | 8.87% | 7.56% |
With sales charge
| | | | |
A
With Initial Sales Charge (5.75%) | 35.82% | 11.86% | 10.64% |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 39.06% | 12.11% | 10.58% |
C
With CDSC (1% for 12 months) (v) | 42.08% | 12.36% | 10.58% |
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. The comparative benchmark performance information provided for the “life” period is from the inception date of the Class A shares. (See Notes to Performance Summary.) |
| (v) | Assuming redemption at the end of the applicable period. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2055 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Standard & Poor’s 500 Stock Index | 57.00% | 57.00% |
| MSCI EAFE Index (net div) | 28.00% | 28.00% |
| Bloomberg Barclays U.S. Aggregate Bond Index | 5.00% | 5.00% |
| Bloomberg Commodity Index | 5.00% | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% | 5.00% |
Performance Summary - continued
MFS Lifetime 2060 Fund
Growth of a Hypothetical $10,000 Investment (t)
Total Returns through 4/30/21
Average annual without sales charge
| Share Class | Class Inception Date | 1-yr | Life (t) |
| A | 12/06/16 | 44.39% | 13.96% |
| B | 12/06/16 | 43.16% | 13.11% |
| C | 12/06/16 | 43.28% | 13.12% |
| I | 12/06/16 | 44.66% | 14.25% |
| R1 | 12/06/16 | 43.20% | 13.12% |
| R2 | 12/06/16 | 43.97% | 13.69% |
| R3 | 12/06/16 | 44.28% | 13.96% |
| R4 | 12/06/16 | 44.61% | 14.24% |
| R6 | 12/06/16 | 44.87% | 14.36% |
Comparative benchmark(s)
| | | |
| Standard & Poor's 500 Stock Index (f) | 45.98% | 17.87% |
| MFS Lifetime 2060 Fund Blended Index (f)(z) | 41.25% | 13.83% |
| Bloomberg Barclays U.S. Aggregate Bond Index (f) | (0.27)% | 3.85% |
| Bloomberg Commodity Index (f) | 48.52% | 1.77% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) (f) | 33.84% | 6.90% |
| MSCI EAFE Index (net div) (f) | 39.88% | 10.56% |
Average annual with sales charge
| | | |
A
With Initial Sales Charge (5.75%) | 36.09% | 12.44% |
B
With CDSC (Declining over six years from 4% to 0%) (v) | 39.16% | 12.81% |
C
With CDSC (1% for 12 months) (v) | 42.28% | 13.12% |
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. (See Notes to Performance Summary.) |
| (v) | Assuming redemption at the end of the applicable period. |
Performance Summary - continued
| (z) | The weights of the components of the blended benchmark (MFS Lifetime 2060 Fund Blended Index) (a custom index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: |
| | 4/30/21 | 4/30/20 |
| Standard & Poor’s 500 Stock Index | 57.00% | 57.00% |
| MSCI EAFE Index (net div) | 28.00% | 28.00% |
| Bloomberg Barclays U.S. Aggregate Bond Index | 5.00% | 5.00% |
| Bloomberg Commodity Index | 5.00% | 5.00% |
| FTSE EPRA Nareit Developed Real Estate Index (net div) | 5.00% | 5.00% |
Benchmark Definition(s)
Bloomberg Barclays U.S. Aggregate Bond Index(a) – a market capitalization-weighted index that measures the performance of the U.S. investment-grade, fixed rate bond market, with index components for government and corporate securities, mortgage pass-through securities, and asset-backed securities with at least one year to final maturity.
Bloomberg Commodity Index – a highly liquid and diversified benchmark for the commodity futures market. The index tracks trades on futures contracts for physical commodities, such as energy (petroleum, gas), precious metals (gold, silver), industrial metals (zinc, copper), grains (corn, wheat), livestock (pork bellies), among others, and are traded in a variety of currencies.
FTSE EPRA Nareit Developed Real Estate Index(c) (net div) – measures the performance of eligible real estate equities worldwide that generate a majority of their revenue and income through the ownership, disposure and development of income-producing real estate.
MSCI EAFE (Europe, Australasia, Far East) Index(e) (net div) - a market capitalization-weighted index that is designed to measure equity market performance in the developed markets, excluding the U.S. and Canada.
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.
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Notes to Performance Summary
Class 529 shares, which currently are only offered by the MFS Lifetime Income Fund, 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, for certain classes for certain funds.
Performance Summary - continued
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers each 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 funds may receive proceeds from litigation settlements, without which performance would be lower.
Expense Tables
Fund expenses borne by the shareholders during the period,
November 1, 2020 through April 30, 2021
As a shareholder of the funds, you incur two types of costs: (1) transaction costs, including sales charges (loads) on certain purchase or redemption payments, and (2) ongoing costs, including distribution and service (12b-1) fees; and other fund expenses. These examples are intended to help you understand your ongoing costs (in dollars) of investing in the funds and to compare these costs with the ongoing costs of investing in other mutual funds.
In addition to the fees and expenses which each fund bears directly, each fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which each fund invests. Because the underlying funds have varied expenses and fee levels and each fund may own different proportions of the underlying funds at different times, the amount of fees and expenses incurred indirectly by each fund will vary. If these transactional and indirect costs were included, your costs would have been higher.
These examples are based on an investment of $1,000 invested at the beginning of the period and held for the entire period November 1, 2020 through April 30, 2021.
Actual Expenses
The first line for each share class in the following tables 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 tables provides information about hypothetical account values and hypothetical expenses based on each fund’s actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not each 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 each 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 tables 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 tables 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.
Expense Tables - continued
MFS LIFETIME INCOME FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.23% | $1,000.00 | $1,085.36 | $1.19 |
| Hypothetical (h) | 0.23% | $1,000.00 | $1,023.65 | $1.15 |
| B | Actual | 0.98% | $1,000.00 | $1,081.33 | $5.06 |
| Hypothetical (h) | 0.98% | $1,000.00 | $1,019.93 | $4.91 |
| C | Actual | 0.98% | $1,000.00 | $1,080.55 | $5.06 |
| Hypothetical (h) | 0.98% | $1,000.00 | $1,019.93 | $4.91 |
| I | Actual | 0.00% | $1,000.00 | $1,086.70 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 0.98% | $1,000.00 | $1,080.44 | $5.06 |
| Hypothetical (h) | 0.98% | $1,000.00 | $1,019.93 | $4.91 |
| R2 | Actual | 0.48% | $1,000.00 | $1,083.18 | $2.48 |
| Hypothetical (h) | 0.48% | $1,000.00 | $1,022.41 | $2.41 |
| R3 | Actual | 0.23% | $1,000.00 | $1,085.36 | $1.19 |
| Hypothetical (h) | 0.23% | $1,000.00 | $1,023.65 | $1.15 |
| R4 | Actual | 0.00% | $1,000.00 | $1,086.70 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,086.90 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| 529A | Actual | 0.27% | $1,000.00 | $1,085.43 | $1.40 |
| Hypothetical (h) | 0.27% | $1,000.00 | $1,023.46 | $1.35 |
| 529B | Actual | 0.25% | $1,000.00 | $1,085.35 | $1.29 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| 529C | Actual | 1.02% | $1,000.00 | $1,081.33 | $5.26 |
| Hypothetical (h) | 1.02% | $1,000.00 | $1,019.74 | $5.11 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Notes to Expense Table
For the MFS Lifetime Income Fund, for the period from November 1, 2020 through April 30, 2021, 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 1.02%, $5.27, and $5.11 for Class 529B. See Note 3 in the Notes to Financial Statements for additional information.
For the MFS Lifetime Income Fund, 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 and are outside of the expense limitation arrangement. For Class 529A, Class 529B, and Class 529C shares, this rebate reduced the expense ratios above by 0.01%. See Note 3 in the Notes to Financial Statements for additional information.
Expense Tables - continued
MFS LIFETIME 2020 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.25% | $1,000.00 | $1,084.18 | $1.29 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| B | Actual | 0.99% | $1,000.00 | $1,080.52 | $5.11 |
| Hypothetical (h) | 0.99% | $1,000.00 | $1,019.89 | $4.96 |
| C | Actual | 0.99% | $1,000.00 | $1,079.91 | $5.11 |
| Hypothetical (h) | 0.99% | $1,000.00 | $1,019.89 | $4.96 |
| I | Actual | 0.00% | $1,000.00 | $1,086.20 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 1.00% | $1,000.00 | $1,080.16 | $5.16 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| R2 | Actual | 0.49% | $1,000.00 | $1,083.31 | $2.53 |
| Hypothetical (h) | 0.49% | $1,000.00 | $1,022.36 | $2.46 |
| R3 | Actual | 0.25% | $1,000.00 | $1,084.59 | $1.29 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| R4 | Actual | 0.00% | $1,000.00 | $1,086.29 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,086.63 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Expense Tables - continued
MFS LIFETIME 2025 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.25% | $1,000.00 | $1,115.18 | $1.31 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| B | Actual | 1.00% | $1,000.00 | $1,111.28 | $5.23 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| C | Actual | 1.00% | $1,000.00 | $1,111.20 | $5.23 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| I | Actual | 0.00% | $1,000.00 | $1,116.66 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 1.00% | $1,000.00 | $1,110.03 | $5.23 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| R2 | Actual | 0.50% | $1,000.00 | $1,113.93 | $2.62 |
| Hypothetical (h) | 0.50% | $1,000.00 | $1,022.32 | $2.51 |
| R3 | Actual | 0.25% | $1,000.00 | $1,115.36 | $1.31 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| R4 | Actual | 0.00% | $1,000.00 | $1,116.45 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,117.59 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Expense Tables - continued
MFS LIFETIME 2030 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.24% | $1,000.00 | $1,172.88 | $1.29 |
| Hypothetical (h) | 0.24% | $1,000.00 | $1,023.60 | $1.20 |
| B | Actual | 0.99% | $1,000.00 | $1,168.89 | $5.32 |
| Hypothetical (h) | 0.99% | $1,000.00 | $1,019.89 | $4.96 |
| C | Actual | 0.99% | $1,000.00 | $1,168.90 | $5.32 |
| Hypothetical (h) | 0.99% | $1,000.00 | $1,019.89 | $4.96 |
| I | Actual | 0.00% | $1,000.00 | $1,174.07 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 0.99% | $1,000.00 | $1,167.95 | $5.32 |
| Hypothetical (h) | 0.99% | $1,000.00 | $1,019.89 | $4.96 |
| R2 | Actual | 0.49% | $1,000.00 | $1,171.02 | $2.64 |
| Hypothetical (h) | 0.49% | $1,000.00 | $1,022.36 | $2.46 |
| R3 | Actual | 0.25% | $1,000.00 | $1,172.72 | $1.35 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| R4 | Actual | 0.00% | $1,000.00 | $1,174.34 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,174.86 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Expense Tables - continued
MFS LIFETIME 2035 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.25% | $1,000.00 | $1,233.61 | $1.38 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| B | Actual | 1.00% | $1,000.00 | $1,229.04 | $5.53 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| C | Actual | 1.00% | $1,000.00 | $1,228.75 | $5.53 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| I | Actual | 0.00% | $1,000.00 | $1,235.43 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 1.00% | $1,000.00 | $1,226.76 | $5.52 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| R2 | Actual | 0.50% | $1,000.00 | $1,231.91 | $2.77 |
| Hypothetical (h) | 0.50% | $1,000.00 | $1,022.32 | $2.51 |
| R3 | Actual | 0.25% | $1,000.00 | $1,233.40 | $1.38 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| R4 | Actual | 0.00% | $1,000.00 | $1,235.82 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,235.75 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Expense Tables - continued
MFS LIFETIME 2040 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.24% | $1,000.00 | $1,254.40 | $1.34 |
| Hypothetical (h) | 0.24% | $1,000.00 | $1,023.60 | $1.20 |
| B | Actual | 0.99% | $1,000.00 | $1,250.33 | $5.52 |
| Hypothetical (h) | 0.99% | $1,000.00 | $1,019.89 | $4.96 |
| C | Actual | 0.99% | $1,000.00 | $1,250.19 | $5.52 |
| Hypothetical (h) | 0.99% | $1,000.00 | $1,019.89 | $4.96 |
| I | Actual | 0.00% | $1,000.00 | $1,256.57 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 0.99% | $1,000.00 | $1,250.03 | $5.52 |
| Hypothetical (h) | 0.99% | $1,000.00 | $1,019.89 | $4.96 |
| R2 | Actual | 0.49% | $1,000.00 | $1,252.92 | $2.74 |
| Hypothetical (h) | 0.49% | $1,000.00 | $1,022.36 | $2.46 |
| R3 | Actual | 0.24% | $1,000.00 | $1,254.65 | $1.34 |
| Hypothetical (h) | 0.24% | $1,000.00 | $1,023.60 | $1.20 |
| R4 | Actual | 0.00% | $1,000.00 | $1,256.71 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,256.81 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Expense Tables - continued
MFS LIFETIME 2045 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.25% | $1,000.00 | $1,273.69 | $1.41 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| B | Actual | 1.00% | $1,000.00 | $1,269.02 | $5.63 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| C | Actual | 1.00% | $1,000.00 | $1,268.66 | $5.63 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| I | Actual | 0.00% | $1,000.00 | $1,274.90 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 1.00% | $1,000.00 | $1,268.22 | $5.62 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| R2 | Actual | 0.50% | $1,000.00 | $1,272.00 | $2.82 |
| Hypothetical (h) | 0.50% | $1,000.00 | $1,022.32 | $2.51 |
| R3 | Actual | 0.25% | $1,000.00 | $1,273.88 | $1.41 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| R4 | Actual | 0.00% | $1,000.00 | $1,275.24 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,276.16 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Expense Tables - continued
MFS LIFETIME 2050 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.25% | $1,000.00 | $1,274.42 | $1.41 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| B | Actual | 1.00% | $1,000.00 | $1,269.67 | $5.63 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| C | Actual | 1.00% | $1,000.00 | $1,269.56 | $5.63 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| I | Actual | 0.00% | $1,000.00 | $1,275.76 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 1.00% | $1,000.00 | $1,270.08 | $5.63 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| R2 | Actual | 0.50% | $1,000.00 | $1,272.74 | $2.82 |
| Hypothetical (h) | 0.50% | $1,000.00 | $1,022.32 | $2.51 |
| R3 | Actual | 0.25% | $1,000.00 | $1,274.57 | $1.41 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| R4 | Actual | 0.00% | $1,000.00 | $1,276.05 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,276.90 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Expense Tables - continued
MFS LIFETIME 2055 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.25% | $1,000.00 | $1,273.83 | $1.41 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| B | Actual | 1.00% | $1,000.00 | $1,269.41 | $5.63 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| C | Actual | 1.00% | $1,000.00 | $1,269.95 | $5.63 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| I | Actual | 0.00% | $1,000.00 | $1,276.03 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 1.00% | $1,000.00 | $1,269.96 | $5.63 |
| Hypothetical (h) | 1.00% | $1,000.00 | $1,019.84 | $5.01 |
| R2 | Actual | 0.50% | $1,000.00 | $1,272.49 | $2.82 |
| Hypothetical (h) | 0.50% | $1,000.00 | $1,022.32 | $2.51 |
| R3 | Actual | 0.25% | $1,000.00 | $1,273.74 | $1.41 |
| Hypothetical (h) | 0.25% | $1,000.00 | $1,023.55 | $1.25 |
| R4 | Actual | 0.00% | $1,000.00 | $1,276.48 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,277.34 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (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 181/365 (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. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Expense Tables - continued
MFS LIFETIME 2060 FUND
Share
Class | | Annualized
Expense
Ratio | Beginning
Account Value
11/01/20 | Ending
Account Value
4/30/21 | Expenses
Paid During
Period (p)
11/01/20-4/30/21 |
| A | Actual | 0.23% | $1,000.00 | $1,275.07 | $1.30 |
| Hypothetical (h) | 0.23% | $1,000.00 | $1,023.65 | $1.15 |
| B | Actual | 0.98% | $1,000.00 | $1,270.06 | $5.52 |
| Hypothetical (h) | 0.98% | $1,000.00 | $1,019.93 | $4.91 |
| C | Actual | 0.98% | $1,000.00 | $1,270.34 | $5.52 |
| Hypothetical (h) | 0.98% | $1,000.00 | $1,019.93 | $4.91 |
| I | Actual | 0.00% | $1,000.00 | $1,276.38 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R1 | Actual | 0.98% | $1,000.00 | $1,269.87 | $5.52 |
| Hypothetical (h) | 0.98% | $1,000.00 | $1,019.93 | $4.91 |
| R2 | Actual | 0.48% | $1,000.00 | $1,273.34 | $2.71 |
| Hypothetical (h) | 0.48% | $1,000.00 | $1,022.41 | $2.41 |
| R3 | Actual | 0.23% | $1,000.00 | $1,274.36 | $1.30 |
| Hypothetical (h) | 0.23% | $1,000.00 | $1,023.65 | $1.15 |
| R4 | Actual | 0.00% | $1,000.00 | $1,275.81 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| R6 | Actual | 0.00% | $1,000.00 | $1,277.32 | $0.00 |
| Hypothetical (h) | 0.00% | $1,000.00 | $1,024.79 | $0.00 |
| (h) | 5% class return per year before expenses. |
| (p) | “Expenses Paid During Period” are equal to each class’s annualized expense ratio, as shown above, multiplied by the average account value over the period, multiplied by 181/365 (to reflect the one-half year period). Expenses paid do not include any applicable sales charges (loads). If these transaction costs had been included, your costs would have been higher. In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. If these indirect costs were included, your costs would have been higher. |
Portfolio of Investments
4/30/21
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
MFS Lifetime Income Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 70.1% |
| MFS Emerging Markets Debt Fund - Class R6 | | | 928,313 | $ 13,766,878 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | | | 1,048,946 | 6,818,147 |
| MFS Global Opportunistic Bond Fund - Class R6 | | | 3,655,256 | 34,249,746 |
| MFS Government Securities Fund - Class R6 | | | 6,781,340 | 68,491,534 |
| MFS High Income Fund - Class R6 | | | 6,039,288 | 20,775,151 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 6,115,806 | 69,169,767 |
| MFS Limited Maturity Fund - Class R6 | | | 22,582,654 | 137,302,541 |
| MFS Total Return Bond Fund - Class R6 | | | 12,182,037 | 137,291,563 |
| | | | | $ 487,865,327 |
| International Stock Funds – 5.0% |
| MFS Blended Research International Equity Fund - Class R6 | | | 1,306,574 | $ 17,429,696 |
| MFS International Growth Fund - Class R6 | | | 78,405 | 3,481,962 |
| MFS International Intrinsic Value Fund - Class R6 | | | 66,054 | 3,477,076 |
| MFS Research International Fund - Class R6 | | | 451,725 | 10,443,882 |
| | | | | $ 34,832,616 |
| Specialty Funds – 4.1% |
| MFS Commodity Strategy Fund - Class R6 | | | 2,369,284 | $ 14,476,327 |
| MFS Global Real Estate Fund - Class R6 | | | 728,055 | 14,349,953 |
| | | | | $ 28,826,280 |
| U.S. Stock Funds – 20.6% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 414,936 | $ 14,344,326 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 699,340 | 14,273,533 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 1,404,340 | 21,528,529 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 403,155 | 7,063,270 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 893,956 | 14,330,111 |
| MFS Growth Fund - Class R6 | | | 81,199 | 14,277,190 |
| MFS Mid Cap Growth Fund - Class R6 | | | 336,374 | 10,568,874 |
| MFS Mid Cap Value Fund - Class R6 | | | 345,123 | 10,795,458 |
| MFS New Discovery Fund - Class R6 | | | 76,767 | 3,487,542 |
| MFS New Discovery Value Fund - Class R6 | | | 172,568 | 3,566,978 |
| MFS Research Fund - Class R6 | | | 252,393 | 14,376,335 |
| MFS Value Fund - Class R6 | | | 282,626 | 14,320,648 |
| | | | | $ 142,932,794 |
| Money Market Funds – 0.2% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 1,058,335 | $ 1,058,335 |
| Total Investment Companies (Identified Cost, $572,125,795) | $695,515,352 |
| Other Assets, Less Liabilities – 0.0% | | 93,714 |
| Net Assets – 100.0% | $695,609,066 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2020 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 71.1% |
| MFS Emerging Markets Debt Fund - Class R6 | | | 491,300 | $ 7,285,979 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | | | 557,455 | 3,623,458 |
| MFS Global Opportunistic Bond Fund - Class R6 | | | 1,938,347 | 18,162,314 |
| MFS Government Securities Fund - Class R6 | | | 3,598,034 | 36,340,148 |
| MFS High Income Fund - Class R6 | | | 3,175,179 | 10,922,615 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 3,208,589 | 36,289,143 |
| MFS Limited Maturity Fund - Class R6 | | | 11,956,193 | 72,693,652 |
| MFS Total Return Bond Fund - Class R6 | | | 6,453,416 | 72,729,997 |
| | | | | $ 258,047,306 |
| International Stock Funds – 4.9% |
| MFS Blended Research International Equity Fund - Class R6 | | | 673,146 | $ 8,979,763 |
| MFS International Growth Fund - Class R6 | | | 40,309 | 1,790,111 |
| MFS International Intrinsic Value Fund - Class R6 | | | 34,055 | 1,792,673 |
| MFS Research International Fund - Class R6 | | | 232,879 | 5,384,165 |
| | | | | $ 17,946,712 |
| Specialty Funds – 4.0% |
| MFS Commodity Strategy Fund - Class R6 | | | 1,190,340 | $ 7,272,978 |
| MFS Global Real Estate Fund - Class R6 | | | 368,596 | 7,265,031 |
| | | | | $ 14,538,009 |
| U.S. Stock Funds – 19.9% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 209,947 | $ 7,257,880 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 353,984 | 7,224,805 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 704,917 | 10,806,386 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 204,937 | 3,590,496 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 453,510 | 7,269,760 |
| MFS Growth Fund - Class R6 | | | 41,017 | 7,212,066 |
| MFS Mid Cap Growth Fund - Class R6 | | | 171,641 | 5,392,952 |
| MFS Mid Cap Value Fund - Class R6 | | | 174,146 | 5,447,296 |
| MFS New Discovery Fund - Class R6 | | | 39,482 | 1,793,674 |
| MFS New Discovery Value Fund - Class R6 | | | 87,601 | 1,810,704 |
| MFS Research Fund - Class R6 | | | 127,567 | 7,266,209 |
| MFS Value Fund - Class R6 | | | 143,717 | 7,282,134 |
| | | | | $ 72,354,362 |
| Money Market Funds – 0.1% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 245,192 | $ 245,192 |
| Total Investment Companies (Identified Cost, $296,039,954) | $363,131,581 |
| Other Assets, Less Liabilities – (0.0)% | | (86,523) |
| Net Assets – 100.0% | $363,045,058 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2025 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 61.0% |
| MFS Emerging Markets Debt Fund - Class R6 | | | 944,003 | $ 13,999,564 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | | | 1,404,658 | 9,130,279 |
| MFS Global Opportunistic Bond Fund - Class R6 | | | 2,573,380 | 24,112,574 |
| MFS Government Securities Fund - Class R6 | | | 4,771,488 | 48,192,028 |
| MFS High Income Fund - Class R6 | | | 6,728,182 | 23,144,947 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 4,280,673 | 48,414,411 |
| MFS Limited Maturity Fund - Class R6 | | | 8,794,037 | 53,467,744 |
| MFS Total Return Bond Fund - Class R6 | | | 6,659,309 | 75,050,407 |
| | | | | $ 295,511,954 |
| International Stock Funds – 7.6% |
| MFS Blended Research International Equity Fund - Class R6 | | | 1,381,236 | $ 18,425,687 |
| MFS International Growth Fund - Class R6 | | | 102,101 | 4,534,296 |
| MFS International Intrinsic Value Fund - Class R6 | | | 85,888 | 4,521,158 |
| MFS Research International Fund - Class R6 | | | 403,935 | 9,338,968 |
| | | | | $ 36,820,109 |
| Specialty Funds – 4.1% |
| MFS Commodity Strategy Fund - Class R6 | | | 1,621,478 | $ 9,907,228 |
| MFS Global Real Estate Fund - Class R6 | | | 495,837 | 9,772,955 |
| | | | | $ 19,680,183 |
| U.S. Stock Funds – 27.2% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 406,275 | $ 14,044,909 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 685,427 | 13,989,571 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 1,231,782 | 18,883,225 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 276,249 | 4,839,880 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 879,626 | 14,100,407 |
| MFS Growth Fund - Class R6 | | | 79,648 | 14,004,515 |
| MFS Mid Cap Growth Fund - Class R6 | | | 298,921 | 9,392,104 |
| MFS Mid Cap Value Fund - Class R6 | | | 304,046 | 9,510,573 |
| MFS New Discovery Fund - Class R6 | | | 53,365 | 2,424,352 |
| MFS New Discovery Value Fund - Class R6 | | | 117,904 | 2,437,080 |
| MFS Research Fund - Class R6 | | | 247,440 | 14,094,163 |
| MFS Value Fund - Class R6 | | | 278,431 | 14,108,105 |
| | | | | $ 131,828,884 |
| Money Market Funds – 0.1% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 781,292 | $ 781,292 |
| Total Investment Companies (Identified Cost, $399,989,043) | $484,622,422 |
| Other Assets, Less Liabilities – (0.0)% | | (88,882) |
| Net Assets – 100.0% | $484,533,540 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2030 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 42.1% |
| MFS Emerging Markets Debt Fund - Class R6 | | | 1,599,536 | $ 23,721,114 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | | | 2,427,265 | 15,777,220 |
| MFS Global Opportunistic Bond Fund - Class R6 | | | 4,206,987 | 39,419,469 |
| MFS Government Securities Fund - Class R6 | | | 7,809,503 | 78,875,980 |
| MFS High Income Fund - Class R6 | | | 11,496,476 | 39,547,879 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 5,134,576 | 58,072,059 |
| MFS Limited Maturity Fund - Class R6 | | | 1,442,439 | 8,770,031 |
| MFS Total Return Bond Fund - Class R6 | | | 6,154,796 | 69,364,551 |
| | | | | $ 333,548,303 |
| International Stock Funds – 12.3% |
| MFS Blended Research International Equity Fund - Class R6 | | | 3,407,148 | $ 45,451,362 |
| MFS International Growth Fund - Class R6 | | | 255,061 | 11,327,255 |
| MFS International Intrinsic Value Fund - Class R6 | | | 214,328 | 11,282,234 |
| MFS International New Discovery Fund - Class R6 | | | 178,441 | 6,966,334 |
| MFS Research International Fund - Class R6 | | | 980,719 | 22,674,216 |
| | | | | $ 97,701,401 |
| Specialty Funds – 5.8% |
| MFS Commodity Strategy Fund - Class R6 | | | 3,831,353 | $ 23,409,565 |
| MFS Global Real Estate Fund - Class R6 | | | 1,163,528 | 22,933,137 |
| | | | | $ 46,342,702 |
| U.S. Stock Funds – 39.7% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 893,757 | $ 30,897,194 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 1,506,416 | 30,745,945 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 3,459,558 | 53,035,020 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 656,527 | 11,502,345 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 1,936,839 | 31,047,535 |
| MFS Growth Fund - Class R6 | | | 175,620 | 30,879,287 |
| MFS Mid Cap Growth Fund - Class R6 | | | 837,785 | 26,323,191 |
| MFS Mid Cap Value Fund - Class R6 | | | 854,473 | 26,727,924 |
| MFS New Discovery Fund - Class R6 | | | 126,653 | 5,753,834 |
| MFS New Discovery Value Fund - Class R6 | | | 278,932 | 5,765,521 |
| MFS Research Fund - Class R6 | | | 544,657 | 31,023,676 |
| MFS Value Fund - Class R6 | | | 610,606 | 30,939,428 |
| | | | | $ 314,640,900 |
| Money Market Funds – 0.1% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 839,311 | $ 839,311 |
| Total Investment Companies (Identified Cost, $569,501,289) | $793,072,617 |
| Other Assets, Less Liabilities – (0.0)% | | (126,356) |
| Net Assets – 100.0% | $792,946,261 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2035 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 22.1% |
| MFS Emerging Markets Debt Fund - Class R6 | | | 991,483 | $ 14,703,695 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | | | 1,505,049 | 9,782,816 |
| MFS Global Opportunistic Bond Fund - Class R6 | | | 1,218,687 | 11,419,102 |
| MFS Government Securities Fund - Class R6 | | | 542,248 | 5,476,708 |
| MFS High Income Fund - Class R6 | | | 7,129,149 | 24,524,272 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 2,265,802 | 25,626,221 |
| MFS Total Return Bond Fund - Class R6 | | | 1,546,222 | 17,425,922 |
| | | | | $ 108,958,736 |
| International Stock Funds – 19.0% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | | | 135,366 | $ 2,172,619 |
| MFS Blended Research International Equity Fund - Class R6 | | | 2,998,619 | 40,001,586 |
| MFS Emerging Markets Equity Fund - Class R6 | | | 51,079 | 2,155,534 |
| MFS International Growth Fund - Class R6 | | | 261,561 | 11,615,933 |
| MFS International Intrinsic Value Fund - Class R6 | | | 219,907 | 11,575,911 |
| MFS International New Discovery Fund - Class R6 | | | 234,950 | 9,172,434 |
| MFS Research International Fund - Class R6 | | | 723,996 | 16,738,792 |
| | | | | $ 93,432,809 |
| Specialty Funds – 7.9% |
| MFS Commodity Strategy Fund - Class R6 | | | 3,231,856 | $ 19,746,636 |
| MFS Global Real Estate Fund - Class R6 | | | 979,664 | 19,309,181 |
| | | | | $ 39,055,817 |
| U.S. Stock Funds – 50.9% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 569,343 | $ 19,682,194 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 1,290,639 | 26,341,948 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 2,825,976 | 43,322,218 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 545,693 | 9,560,540 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 1,645,948 | 26,384,554 |
| MFS Growth Fund - Class R6 | | | 150,113 | 26,394,288 |
| MFS Mid Cap Growth Fund - Class R6 | | | 686,277 | 21,562,823 |
| MFS Mid Cap Value Fund - Class R6 | | | 696,330 | 21,781,210 |
| MFS New Discovery Fund - Class R6 | | | 105,761 | 4,804,711 |
| MFS New Discovery Value Fund - Class R6 | | | 232,432 | 4,804,365 |
| MFS Research Fund - Class R6 | | | 346,781 | 19,752,619 |
| MFS Value Fund - Class R6 | | | 520,245 | 26,360,812 |
| | | | | $ 250,752,282 |
| Money Market Funds – 0.1% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 397,611 | $ 397,610 |
| Total Investment Companies (Identified Cost, $354,868,266) | $492,597,254 |
| Other Assets, Less Liabilities – (0.0)% | | (96,401) |
| Net Assets – 100.0% | $492,500,853 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2040 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 13.2% |
| MFS Emerging Markets Debt Fund - Class R6 | | | 683,179 | $ 10,131,545 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | | | 1,038,820 | 6,752,333 |
| MFS Global Opportunistic Bond Fund - Class R6 | | | 718,594 | 6,733,222 |
| MFS High Income Fund - Class R6 | | | 4,909,166 | 16,887,532 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 2,094,961 | 23,694,004 |
| MFS Total Return Bond Fund - Class R6 | | | 1,497,767 | 16,879,831 |
| | | | | $ 81,078,467 |
| International Stock Funds – 23.3% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | | | 274,352 | $ 4,403,343 |
| MFS Blended Research International Equity Fund - Class R6 | | | 4,372,755 | 58,332,551 |
| MFS Emerging Markets Equity Fund - Class R6 | | | 103,357 | 4,361,653 |
| MFS International Growth Fund - Class R6 | | | 402,855 | 17,890,815 |
| MFS International Intrinsic Value Fund - Class R6 | | | 338,851 | 17,837,118 |
| MFS International New Discovery Fund - Class R6 | | | 448,592 | 17,513,035 |
| MFS Research International Fund - Class R6 | | | 976,174 | 22,569,140 |
| | | | | $ 142,907,655 |
| Specialty Funds – 9.0% |
| MFS Commodity Strategy Fund - Class R6 | | | 4,540,142 | $ 27,740,271 |
| MFS Global Real Estate Fund - Class R6 | | | 1,393,781 | 27,471,423 |
| | | | | $ 55,211,694 |
| U.S. Stock Funds – 54.5% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 713,094 | $ 24,651,658 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 1,726,172 | 35,231,183 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 3,786,872 | 58,052,744 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 776,151 | 13,598,174 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 2,209,620 | 35,420,206 |
| MFS Growth Fund - Class R6 | | | 200,544 | 35,261,598 |
| MFS Mid Cap Growth Fund - Class R6 | | | 920,426 | 28,919,785 |
| MFS Mid Cap Value Fund - Class R6 | | | 936,572 | 29,295,977 |
| MFS New Discovery Fund - Class R6 | | | 149,793 | 6,805,078 |
| MFS New Discovery Value Fund - Class R6 | | | 332,744 | 6,877,810 |
| MFS Research Fund - Class R6 | | | 433,747 | 24,706,252 |
| MFS Value Fund - Class R6 | | | 698,384 | 35,387,133 |
| | | | | $ 334,207,598 |
| Money Market Funds – 0.0% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 345,236 | $ 345,236 |
| Total Investment Companies (Identified Cost, $384,856,799) | $613,750,650 |
| Other Assets, Less Liabilities – (0.0)% | | (103,003) |
| Net Assets – 100.0% | $613,647,647 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2045 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 5.8% |
| MFS Emerging Markets Debt Fund - Class R6 | | | 41,351 | $ 613,236 |
| MFS Emerging Markets Debt Local Currency Fund - Class R6 | | | 62,793 | 408,155 |
| MFS Global Opportunistic Bond Fund - Class R6 | | | 43,543 | 407,994 |
| MFS High Income Fund - Class R6 | | | 297,258 | 1,022,568 |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 837,964 | 9,477,379 |
| MFS Total Return Bond Fund - Class R6 | | | 803,486 | 9,055,287 |
| | | | | $ 20,984,619 |
| International Stock Funds – 27.4% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | | | 215,681 | $ 3,461,673 |
| MFS Blended Research International Equity Fund - Class R6 | | | 2,899,520 | 38,679,603 |
| MFS Emerging Markets Equity Fund - Class R6 | | | 81,833 | 3,453,371 |
| MFS International Growth Fund - Class R6 | | | 275,683 | 12,243,064 |
| MFS International Intrinsic Value Fund - Class R6 | | | 232,141 | 12,219,884 |
| MFS International New Discovery Fund - Class R6 | | | 354,064 | 13,822,643 |
| MFS Research International Fund - Class R6 | | | 611,518 | 14,138,300 |
| | | | | $ 98,018,538 |
| Specialty Funds – 10.0% |
| MFS Commodity Strategy Fund - Class R6 | | | 2,929,001 | $ 17,896,194 |
| MFS Global Real Estate Fund - Class R6 | | | 902,671 | 17,791,648 |
| | | | | $ 35,687,842 |
| U.S. Stock Funds – 56.7% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 415,208 | $ 14,353,748 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 1,045,858 | 21,345,959 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 2,317,286 | 35,523,999 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 503,176 | 8,815,639 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 1,341,382 | 21,502,349 |
| MFS Growth Fund - Class R6 | | | 121,373 | 21,340,933 |
| MFS Mid Cap Growth Fund - Class R6 | | | 564,332 | 17,731,328 |
| MFS Mid Cap Value Fund - Class R6 | | | 571,872 | 17,888,147 |
| MFS New Discovery Fund - Class R6 | | | 97,014 | 4,407,358 |
| MFS New Discovery Value Fund - Class R6 | | | 214,501 | 4,433,734 |
| MFS Research Fund - Class R6 | | | 252,679 | 14,392,606 |
| MFS Value Fund - Class R6 | | | 424,738 | 21,521,486 |
| | | | | $ 203,257,286 |
| Money Market Funds – 0.1% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 366,634 | $ 366,634 |
| Total Investment Companies (Identified Cost, $249,927,194) | $358,314,919 |
| Other Assets, Less Liabilities – (0.0)% | | (89,471) |
| Net Assets – 100.0% | $358,225,448 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2050 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 5.0% |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 809,342 | $ 9,153,654 |
| MFS Total Return Bond Fund - Class R6 | | | 811,636 | 9,147,142 |
| | | | | $ 18,300,796 |
| International Stock Funds – 27.8% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | | | 226,357 | $ 3,633,026 |
| MFS Blended Research International Equity Fund - Class R6 | | | 2,993,829 | 39,937,686 |
| MFS Emerging Markets Equity Fund - Class R6 | | | 85,869 | 3,623,677 |
| MFS International Growth Fund - Class R6 | | | 285,624 | 12,684,547 |
| MFS International Intrinsic Value Fund - Class R6 | | | 240,398 | 12,654,555 |
| MFS International New Discovery Fund - Class R6 | | | 371,512 | 14,503,816 |
| MFS Research International Fund - Class R6 | | | 627,652 | 14,511,326 |
| | | | | $ 101,548,633 |
| Specialty Funds – 10.1% |
| MFS Commodity Strategy Fund - Class R6 | | | 3,020,376 | $ 18,454,495 |
| MFS Global Real Estate Fund - Class R6 | | | 929,929 | 18,328,906 |
| | | | | $ 36,783,401 |
| U.S. Stock Funds – 57.0% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 422,989 | $ 14,622,735 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 1,070,135 | 21,841,452 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 2,375,420 | 36,415,187 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 518,838 | 9,090,041 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 1,373,739 | 22,021,029 |
| MFS Growth Fund - Class R6 | | | 124,293 | 21,854,383 |
| MFS Mid Cap Growth Fund - Class R6 | | | 578,505 | 18,176,637 |
| MFS Mid Cap Value Fund - Class R6 | | | 586,302 | 18,339,521 |
| MFS New Discovery Fund - Class R6 | | | 100,059 | 4,545,695 |
| MFS New Discovery Value Fund - Class R6 | | | 221,154 | 4,571,262 |
| MFS Research Fund - Class R6 | | | 257,498 | 14,667,091 |
| MFS Value Fund - Class R6 | | | 434,759 | 22,029,238 |
| | | | | $ 208,174,271 |
| Money Market Funds – 0.1% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 337,934 | $ 337,934 |
| Total Investment Companies (Identified Cost, $245,955,928) | $365,145,035 |
| Other Assets, Less Liabilities – (0.0)% | | (92,908) |
| Net Assets – 100.0% | $365,052,127 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2055 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.0% |
| Bond Funds – 5.0% |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 444,649 | $ 5,028,984 |
| MFS Total Return Bond Fund - Class R6 | | | 445,666 | 5,022,655 |
| | | | | $ 10,051,639 |
| International Stock Funds – 27.8% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | | | 124,730 | $ 2,001,921 |
| MFS Blended Research International Equity Fund - Class R6 | | | 1,647,162 | 21,973,135 |
| MFS Emerging Markets Equity Fund - Class R6 | | | 47,296 | 1,995,903 |
| MFS International Growth Fund - Class R6 | | | 157,271 | 6,984,408 |
| MFS International Intrinsic Value Fund - Class R6 | | | 132,478 | 6,973,665 |
| MFS International New Discovery Fund - Class R6 | | | 204,494 | 7,983,446 |
| MFS Research International Fund - Class R6 | | | 345,369 | 7,984,921 |
| | | | | $ 55,897,399 |
| Specialty Funds – 10.1% |
| MFS Commodity Strategy Fund - Class R6 | | | 1,675,459 | $ 10,237,051 |
| MFS Global Real Estate Fund - Class R6 | | | 512,156 | 10,094,599 |
| | | | | $ 20,331,650 |
| U.S. Stock Funds – 57.0% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 232,322 | $ 8,031,381 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 588,705 | 12,015,475 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 1,308,583 | 20,060,582 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 286,298 | 5,015,933 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 754,884 | 12,100,795 |
| MFS Growth Fund - Class R6 | | | 68,429 | 12,031,872 |
| MFS Mid Cap Growth Fund - Class R6 | | | 318,984 | 10,022,486 |
| MFS Mid Cap Value Fund - Class R6 | | | 322,607 | 10,091,131 |
| MFS New Discovery Fund - Class R6 | | | 55,405 | 2,517,049 |
| MFS New Discovery Value Fund - Class R6 | | | 121,743 | 2,516,434 |
| MFS Research Fund - Class R6 | | | 141,540 | 8,062,100 |
| MFS Value Fund - Class R6 | | | 238,491 | 12,084,327 |
| | | | | $ 114,549,565 |
| Money Market Funds – 0.1% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 201,256 | $ 201,255 |
| Total Investment Companies (Identified Cost, $145,405,402) | $201,031,508 |
| Other Assets, Less Liabilities – (0.0)% | | (40,916) |
| Net Assets – 100.0% | $200,990,592 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
MFS Lifetime 2060 Fund
| Issuer | | | Shares/Par | Value ($) |
| Investment Companies (h) – 100.1% |
| Bond Funds – 5.0% |
| MFS Inflation-Adjusted Bond Fund - Class R6 | | | 132,841 | $ 1,502,428 |
| MFS Total Return Bond Fund - Class R6 | | | 133,520 | 1,504,776 |
| | | | | $ 3,007,204 |
| International Stock Funds – 27.9% |
| MFS Blended Research Emerging Markets Equity Fund - Class R6 | | | 37,233 | $ 597,580 |
| MFS Blended Research International Equity Fund - Class R6 | | | 492,931 | 6,575,704 |
| MFS Emerging Markets Equity Fund - Class R6 | | | 14,149 | 597,102 |
| MFS International Growth Fund - Class R6 | | | 47,065 | 2,090,153 |
| MFS International Intrinsic Value Fund - Class R6 | | | 39,695 | 2,089,537 |
| MFS International New Discovery Fund - Class R6 | | | 61,224 | 2,390,193 |
| MFS Research International Fund - Class R6 | | | 103,404 | 2,390,698 |
| | | | | $ 16,730,967 |
| Specialty Funds – 10.1% |
| MFS Commodity Strategy Fund - Class R6 | | | 496,488 | $ 3,033,544 |
| MFS Global Real Estate Fund - Class R6 | | | 152,245 | 3,000,739 |
| | | | | $ 6,034,283 |
| U.S. Stock Funds – 57.0% |
| MFS Blended Research Core Equity Fund - Class R6 | | | 69,312 | $ 2,396,121 |
| MFS Blended Research Growth Equity Fund - Class R6 | | | 175,889 | 3,589,899 |
| MFS Blended Research Mid Cap Equity Fund - Class R6 | | | 390,171 | 5,981,319 |
| MFS Blended Research Small Cap Equity Fund - Class R6 | | | 85,305 | 1,494,537 |
| MFS Blended Research Value Equity Fund - Class R6 | | | 225,020 | 3,607,069 |
| MFS Growth Fund - Class R6 | | | 20,416 | 3,589,678 |
| MFS Mid Cap Growth Fund - Class R6 | | | 95,114 | 2,988,481 |
| MFS Mid Cap Value Fund - Class R6 | | | 96,013 | 3,003,275 |
| MFS New Discovery Fund - Class R6 | | | 16,452 | 747,433 |
| MFS New Discovery Value Fund - Class R6 | | | 36,235 | 748,973 |
| MFS Research Fund - Class R6 | | | 42,148 | 2,400,760 |
| MFS Value Fund - Class R6 | | | 71,199 | 3,607,674 |
| | | | | $ 34,155,219 |
| Money Market Funds – 0.1% | |
| MFS Institutional Money Market Portfolio, 0.04% (v) | | | 34,567 | $ 34,567 |
| Total Investment Companies (Identified Cost, $47,341,285) | $59,962,240 |
| Other Assets, Less Liabilities – (0.1)% | | (32,569) |
| Net Assets – 100.0% | $59,929,671 |
See Portfolio Footnotes and Notes to Financial Statements
Portfolio of Investments – continued
Portfolio Footnotes:
| (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 each fund’s investments in affiliated issuers were as follows: |
| | Affiliated Issuers |
| MFS Lifetime Income Fund | $695,515,352 |
| MFS Lifetime 2020 Fund | 363,131,581 |
| MFS Lifetime 2025 Fund | 484,622,422 |
| MFS Lifetime 2030 Fund | 793,072,617 |
| MFS Lifetime 2035 Fund | 492,597,254 |
| MFS Lifetime 2040 Fund | 613,750,650 |
| MFS Lifetime 2045 Fund | 358,314,919 |
| MFS Lifetime 2050 Fund | 365,145,035 |
| MFS Lifetime 2055 Fund | 201,031,508 |
| MFS Lifetime 2060 Fund | 59,962,240 |
| (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. |
See Notes to Financial Statements
Financial Statements
Statements of Assets and Liabilities
At 4/30/21
These statements represent each fund's balance sheet, which details the assets and liabilities comprising the total value of each fund.
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Assets | | | | | |
| Investments in affiliated issuers, at value (identified cost, $572,125,795, $296,039,954, $399,989,043, $569,501,289, and $354,868,266, respectively) | $695,515,352 | $363,131,581 | $484,622,422 | $793,072,617 | $492,597,254 |
| Receivables for | | | | | |
| Investments sold | 159,356 | 156,498 | 9,220 | 73,612 | — |
| Fund shares sold | 428,701 | 254,980 | 525,136 | 1,543,478 | 834,712 |
| Receivable from investment adviser | 111,038 | 61,452 | 82,481 | 129,152 | 82,064 |
| Other assets | 2,368 | 1,074 | 1,209 | 1,750 | 1,126 |
| Total assets | $696,216,815 | $363,605,585 | $485,240,468 | $794,820,609 | $493,515,156 |
| Liabilities | | | | | |
| Payables for | | | | | |
| Distributions | $39,018 | $— | $— | $— | $— |
| Investments purchased | 169,360 | 142,010 | 131,213 | 1,400,339 | 629,285 |
| Fund shares reacquired | 139,020 | 266,333 | 405,999 | 223,221 | 214,532 |
| Payable to affiliates | | | | | |
| Administrative services fee | 94 | 94 | 94 | 94 | 94 |
| Shareholder servicing costs | 177,906 | 97,240 | 107,209 | 184,257 | 114,081 |
| Distribution and service fees | 10,495 | 3,240 | 2,920 | 6,841 | 3,214 |
| Program manager fee | 527 | — | — | — | — |
| Payable for independent Trustees' compensation | 18 | 18 | 15 | 14 | 12 |
| Accrued expenses and other liabilities | 71,311 | 51,592 | 59,478 | 59,582 | 53,085 |
| Total liabilities | $607,749 | $560,527 | $706,928 | $1,874,348 | $1,014,303 |
| Net assets | $695,609,066 | $363,045,058 | $484,533,540 | $792,946,261 | $492,500,853 |
| Net assets consist of | | | | | |
| Paid-in capital | $582,105,822 | $296,559,509 | $397,858,680 | $568,396,120 | $357,119,844 |
| Total distributable earnings (loss) | 113,503,244 | 66,485,549 | 86,674,860 | 224,550,141 | 135,381,009 |
| Net assets | $695,609,066 | $363,045,058 | $484,533,540 | $792,946,261 | $492,500,853 |
Statements of Assets and Liabilities – continued
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Net assets | | | | | |
| Class A | $164,095,940 | $46,331,281 | $29,637,432 | $81,398,113 | $27,769,513 |
| Class B | 3,347,304 | 2,108,743 | 1,446,782 | 6,394,026 | 1,597,379 |
| Class C | 81,541,552 | 6,298,300 | 4,618,223 | 12,825,793 | 3,513,800 |
| Class I | 46,956,031 | 3,714,203 | 3,130,949 | 6,274,294 | 1,266,522 |
| Class R1 | 1,932,495 | 1,713,752 | 374,332 | 5,635,709 | 469,874 |
| Class R2 | 10,822,740 | 30,794,924 | 21,994,107 | 60,402,491 | 20,782,700 |
| Class R3 | 75,909,427 | 87,642,916 | 112,825,739 | 196,178,019 | 141,555,344 |
| Class R4 | 31,137,977 | 49,049,739 | 82,036,785 | 123,739,884 | 89,096,779 |
| Class R6 | 87,750,150 | 135,391,200 | 228,469,191 | 300,097,932 | 206,448,942 |
| Class 529A | 159,423,487 | — | — | — | — |
| Class 529B | 3,826,102 | — | — | — | — |
| Class 529C | 28,865,861 | — | — | — | — |
| Total net assets | $695,609,066 | $363,045,058 | $484,533,540 | $792,946,261 | $492,500,853 |
| Shares of beneficial interest outstanding | | | | | |
| Class A | 11,858,615 | 3,270,997 | 1,975,952 | 4,471,783 | 1,490,907 |
| Class B | 241,884 | 149,351 | 97,184 | 356,108 | 86,349 |
| Class C | 5,895,447 | 452,456 | 312,139 | 719,081 | 191,154 |
| Class I | 3,392,345 | 260,176 | 207,960 | 342,880 | 67,785 |
| Class R1 | 139,489 | 120,667 | 24,897 | 312,248 | 25,277 |
| Class R2 | 781,839 | 2,187,288 | 1,470,986 | 3,347,829 | 1,116,464 |
| Class R3 | 5,485,994 | 6,187,135 | 7,531,611 | 10,811,414 | 7,592,270 |
| Class R4 | 2,250,379 | 3,435,621 | 5,437,115 | 6,747,441 | 4,750,426 |
| Class R6 | 6,322,895 | 9,494,607 | 15,142,602 | 16,372,434 | 11,004,987 |
| Class 529A | 14,135,195 | — | — | — | — |
| Class 529B | 339,020 | — | — | — | — |
| Class 529C | 2,560,138 | — | — | — | — |
| Total shares of beneficial interest outstanding | 53,403,240 | 25,558,298 | 32,200,446 | 43,481,218 | 26,325,619 |
| Class A shares | | | | | |
Net asset value per share
(net assets / shares of beneficial interest outstanding) | $13.84 | $14.16 | $15.00 | $18.20 | $18.63 |
| Offering price per share (100 / 95.75 x net asset value per share) | $14.45 | $— | $— | $— | $— |
| Offering price per share (100 / 94.25 x net asset value per share) | $— | $15.02 | $15.92 | $19.31 | $19.77 |
| Class B shares | | | | | |
Net asset value and offering price per share
(net assets / shares of beneficial interest outstanding) | $13.84 | $14.12 | $14.89 | $17.96 | $18.50 |
| Class C shares | | | | | |
Net asset value and offering price per share
(net assets / shares of beneficial interest outstanding) | $13.83 | $13.92 | $14.80 | $17.84 | $18.38 |
| Class I shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $13.84 | $14.28 | $15.06 | $18.30 | $18.68 |
| Class R1 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $13.85 | $14.20 | $15.04 | $18.05 | $18.59 |
| Class R2 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $13.84 | $14.08 | $14.95 | $18.04 | $18.61 |
| Class R3 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $13.84 | $14.17 | $14.98 | $18.15 | $18.64 |
Statements of Assets and Liabilities – continued
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Class R4 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $13.84 | $14.28 | $15.09 | $18.34 | $18.76 |
| Class R6 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $13.88 | $14.26 | $15.09 | $18.33 | $18.76 |
| Class 529A shares | | | | | |
Net asset value and redemption price per share
(net assets / shares of beneficial interest outstanding) | $11.28 | $— | $— | $— | $— |
| Offering price per share (100 / 95.75 x net asset value per share) | $11.78 | $— | $— | $— | $— |
| Class 529B shares | | | | | |
Net asset value and offering price per share
(net assets / shares of beneficial interest outstanding) | $11.29 | $— | $— | $— | $— |
| Class 529C shares | | | | | |
Net asset value and offering price per share
(net assets / shares of beneficial interest outstanding) | $11.28 | $— | $— | $— | $— |
| On sales of $100,000 or more, the maximum offering price of Class A and Class 529A shares is reduced for the MFS Lifetime Income Fund. On sales of $50,000 or more, the maximum offering price of Class A shares is reduced for all other funds. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, Class C, Class 529B, and Class 529C shares. |
See Notes to Financial Statements
Statements of Assets and Liabilities – continued
| At 4/30/21 | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Assets | | | | | |
| Investments in affiliated issuers, at value (identified cost, $384,856,799, $249,927,194, $245,955,928, $145,405,402, and $47,341,285, respectively) | $613,750,650 | $358,314,919 | $365,145,035 | $201,031,508 | $59,962,240 |
| Receivables for | | | | | |
| Investments sold | 240,910 | — | — | 30,842 | — |
| Fund shares sold | 1,073,813 | 600,486 | 780,396 | 543,070 | 284,913 |
| Receivable from investment adviser | 108,867 | 63,276 | 65,625 | 50,072 | 38,612 |
| Other assets | 1,289 | 930 | 1,074 | 601 | 662 |
| Total assets | $615,175,529 | $358,979,611 | $365,992,130 | $201,656,093 | $60,286,427 |
| Liabilities | | | | | |
| Payables for | | | | | |
| Investments purchased | $430,592 | $521,294 | $587,542 | $481,011 | $285,988 |
| Fund shares reacquired | 884,916 | 85,417 | 192,015 | 61,552 | 3,563 |
| Payable to affiliates | | | | | |
| Administrative services fee | 94 | 94 | 94 | 94 | 94 |
| Shareholder servicing costs | 150,965 | 94,393 | 104,190 | 68,277 | 19,859 |
| Distribution and service fees | 5,298 | 2,370 | 3,018 | 1,802 | 417 |
| Payable for independent Trustees' compensation | 14 | 12 | 12 | 12 | 13 |
| Accrued expenses and other liabilities | 56,003 | 50,583 | 53,132 | 52,753 | 46,822 |
| Total liabilities | $1,527,882 | $754,163 | $940,003 | $665,501 | $356,756 |
| Net assets | $613,647,647 | $358,225,448 | $365,052,127 | $200,990,592 | $59,929,671 |
| Net assets consist of | | | | | |
| Paid-in capital | $388,978,667 | $251,497,665 | $247,194,085 | $146,152,368 | $47,475,442 |
| Total distributable earnings (loss) | 224,668,980 | 106,727,783 | 117,858,042 | 54,838,224 | 12,454,229 |
| Net assets | $613,647,647 | $358,225,448 | $365,052,127 | $200,990,592 | $59,929,671 |
Statements of Assets and Liabilities – continued
| | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Net assets | | | | | |
| Class A | $56,523,848 | $18,979,713 | $22,707,992 | $14,314,494 | $5,583,700 |
| Class B | 3,526,758 | 930,203 | 1,727,318 | 713,351 | 191,187 |
| Class C | 8,726,852 | 1,942,596 | 3,898,022 | 2,584,582 | 760,934 |
| Class I | 3,869,916 | 2,145,452 | 1,033,234 | 433,991 | 231,596 |
| Class R1 | 3,965,420 | 551,504 | 694,925 | 663,352 | 85,990 |
| Class R2 | 53,097,416 | 15,160,728 | 28,781,173 | 17,588,569 | 1,579,894 |
| Class R3 | 156,544,270 | 109,034,482 | 113,346,448 | 65,613,389 | 17,477,481 |
| Class R4 | 105,822,497 | 68,489,151 | 71,368,312 | 38,373,508 | 8,870,847 |
| Class R6 | 221,570,670 | 140,991,619 | 121,494,703 | 60,705,356 | 25,148,042 |
| Total net assets | $613,647,647 | $358,225,448 | $365,052,127 | $200,990,592 | $59,929,671 |
| Shares of beneficial interest outstanding | | | | | |
| Class A | 2,779,683 | 956,730 | 946,923 | 700,846 | 349,280 |
| Class B | 174,595 | 47,191 | 73,134 | 35,090 | 11,983 |
| Class C | 437,760 | 99,012 | 165,972 | 128,153 | 47,971 |
| Class I | 188,865 | 107,595 | 43,133 | 21,219 | 14,392 |
| Class R1 | 196,970 | 27,942 | 29,452 | 32,747 | 5,372 |
| Class R2 | 2,627,014 | 767,479 | 1,214,305 | 864,112 | 98,951 |
| Class R3 | 7,699,566 | 5,501,781 | 4,764,712 | 3,212,474 | 1,092,118 |
| Class R4 | 5,147,818 | 3,435,282 | 2,977,818 | 1,866,682 | 551,950 |
| Class R6 | 10,781,155 | 7,073,191 | 5,070,844 | 2,950,262 | 1,561,100 |
| Total shares of beneficial interest outstanding | 30,033,426 | 18,016,203 | 15,286,293 | 9,811,585 | 3,733,117 |
| Class A shares | | | | | |
Net asset value per share
(net assets / shares of beneficial interest outstanding) | $20.33 | $19.84 | $23.98 | $20.42 | $15.99 |
| Offering price per share (100 / 94.25 x net asset value per share) | $21.57 | $21.05 | $25.44 | $21.67 | $16.97 |
| Class B shares | | | | | |
Net asset value and offering price per share
(net assets / shares of beneficial interest outstanding) | $20.20 | $19.71 | $23.62 | $20.33 | $15.95 |
| Class C shares | | | | | |
Net asset value and offering price per share
(net assets / shares of beneficial interest outstanding) | $19.94 | $19.62 | $23.49 | $20.17 | $15.86 |
| Class I shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $20.49 | $19.94 | $23.95 | $20.45 | $16.09 |
| Class R1 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $20.13 | $19.74 | $23.59 | $20.26 | $16.01 |
| Class R2 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $20.21 | $19.75 | $23.70 | $20.35 | $15.97 |
| Class R3 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $20.33 | $19.82 | $23.79 | $20.42 | $16.00 |
| Class R4 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $20.56 | $19.94 | $23.97 | $20.56 | $16.07 |
Statements of Assets and Liabilities – continued
| | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Class R6 shares | | | | | |
Net asset value, offering price, and redemption price per share
(net assets / shares of beneficial interest outstanding) | $20.55 | $19.93 | $23.96 | $20.58 | $16.11 |
| On sales of $50,000 or more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. |
See Notes to Financial Statements
Financial Statements
Statements of Operations
Year ended 4/30/21
These statements describe how much each fund earned in investment income and accrued in expenses. They also describe any gains or losses generated by each fund’s operations.
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Net investment income (loss) | | | | | |
| Dividends from affiliated issuers | $13,831,127 | $7,583,760 | $8,858,598 | $12,860,140 | $6,761,483 |
| Other | 95 | 61 | 59 | 95 | 58 |
| Excess expense reimbursement from investment adviser | 89,491 | 172,571 | 249,417 | 329,022 | 213,530 |
| Total investment income | $13,920,713 | $7,756,392 | $9,108,074 | $13,189,257 | $6,975,071 |
| Expenses | | | | | |
| Distribution and service fees | $2,304,923 | $637,301 | $537,415 | $1,234,157 | $543,951 |
| Shareholder servicing costs | 826,084 | 379,444 | 433,614 | 755,113 | 455,433 |
| Program manager fees | 89,308 | — | — | — | — |
| Administrative services fee | 17,500 | 17,500 | 17,500 | 17,500 | 17,500 |
| Independent Trustees' compensation | 13,385 | 8,035 | 8,495 | 13,700 | 8,444 |
| Custodian fee | 24,983 | 11,014 | 12,163 | 16,368 | 11,670 |
| Shareholder communications | 42,450 | 16,072 | 14,746 | 23,036 | 16,330 |
| Audit and tax fees | 40,132 | 38,398 | 37,592 | 38,470 | 37,591 |
| Legal fees | 9,105 | 6,744 | 7,343 | 9,640 | 7,290 |
| Registration fees | 143,742 | 130,106 | 145,969 | 148,260 | 148,878 |
| Miscellaneous | 38,530 | 34,846 | 35,607 | 39,329 | 36,232 |
| Total expenses | $3,550,142 | $1,279,460 | $1,250,444 | $2,295,573 | $1,283,319 |
| Reduction of expenses by investment adviser and distributor | (1,279,442) | (651,257) | (710,795) | (1,077,478) | (735,740) |
| Net expenses | $2,270,700 | $628,203 | $539,649 | $1,218,095 | $547,579 |
| Net investment income (loss) | $11,650,013 | $7,128,189 | $8,568,425 | $11,971,162 | $6,427,492 |
| Realized and unrealized gain (loss) | | | | | |
| Realized gain (loss) (identified cost basis) | | | | | |
| Investments in affiliated issuers | $10,368,808 | $10,499,336 | $4,744,499 | $17,856,276 | $(1,032,873) |
| Capital gain distributions from affiliated issuers | 3,502,202 | 1,904,231 | 3,271,999 | 7,211,439 | 5,155,032 |
| Net realized gain (loss) | $13,871,010 | $12,403,567 | $8,016,498 | $25,067,715 | $4,122,159 |
| Change in unrealized appreciation or depreciation | | | | | |
| Affiliated issuers | $70,006,360 | $33,284,885 | $62,790,053 | $139,628,325 | $121,307,305 |
| Net realized and unrealized gain (loss) | $83,877,370 | $45,688,452 | $70,806,551 | $164,696,040 | $125,429,464 |
| Change in net assets from operations | $95,527,383 | $52,816,641 | $79,374,976 | $176,667,202 | $131,856,956 |
See Notes to Financial Statements
Statements of Operations – continued
| Year ended 4/30/21 | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Net investment income (loss) | | | | | |
| Dividends from affiliated issuers | $7,632,972 | $3,888,568 | $3,970,762 | $2,130,485 | $550,600 |
| Other | 73 | 43 | 44 | 29 | 8 |
| Excess expense reimbursement from investment adviser | 226,716 | 140,501 | 127,549 | 62,335 | 23,554 |
| Total investment income | $7,859,761 | $4,029,112 | $4,098,355 | $2,192,849 | $574,162 |
| Expenses | | | | | |
| Distribution and service fees | $889,186 | $384,185 | $477,089 | $287,890 | $55,211 |
| Shareholder servicing costs | 596,272 | 360,225 | 393,069 | 263,402 | 74,626 |
| Administrative services fee | 17,500 | 17,500 | 17,500 | 17,500 | 17,500 |
| Independent Trustees' compensation | 8,975 | 7,854 | 7,885 | 4,357 | 1,664 |
| Custodian fee | 13,066 | 9,697 | 9,875 | 7,792 | 5,846 |
| Shareholder communications | 21,961 | 16,596 | 22,686 | 22,145 | 15,629 |
| Audit and tax fees | 38,427 | 37,565 | 37,766 | 37,537 | 36,877 |
| Legal fees | 8,059 | 6,347 | 6,359 | 5,325 | 4,467 |
| Registration fees | 145,679 | 139,642 | 131,657 | 132,485 | 126,367 |
| Miscellaneous | 37,676 | 34,692 | 33,987 | 31,807 | 30,533 |
| Total expenses | $1,776,801 | $1,014,303 | $1,137,873 | $810,240 | $368,720 |
| Reduction of expenses by investment adviser and distributor | (894,501) | (627,319) | (659,306) | (521,773) | (315,476) |
| Net expenses | $882,300 | $386,984 | $478,567 | $288,467 | $53,244 |
| Net investment income (loss) | $6,977,461 | $3,642,128 | $3,619,788 | $1,904,382 | $520,918 |
| Realized and unrealized gain (loss) | | | | | |
| Realized gain (loss) (identified cost basis) | | | | | |
| Investments in affiliated issuers | $3,635,506 | $(2,234,788) | $(1,588,255) | $(981,794) | $(394,427) |
| Capital gain distributions from affiliated issuers | 6,935,147 | 4,241,754 | 4,369,274 | 2,342,159 | 609,107 |
| Net realized gain (loss) | $10,570,653 | $2,006,966 | $2,781,019 | $1,360,365 | $214,680 |
| Change in unrealized appreciation or depreciation | | | | | |
| Affiliated issuers | $157,970,864 | $99,655,196 | $101,104,166 | $55,212,392 | $13,782,441 |
| Net realized and unrealized gain (loss) | $168,541,517 | $101,662,162 | $103,885,185 | $56,572,757 | $13,997,121 |
| Change in net assets from operations | $175,518,978 | $105,304,290 | $107,504,973 | $58,477,139 | $14,518,039 |
See Notes to Financial Statements
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 4/30/21 | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Change in net assets | | | | | |
| From operations | | | | | |
| Net investment income (loss) | $11,650,013 | $7,128,189 | $8,568,425 | $11,971,162 | $6,427,492 |
| Net realized gain (loss) | 13,871,010 | 12,403,567 | 8,016,498 | 25,067,715 | 4,122,159 |
| Net unrealized gain (loss) | 70,006,360 | 33,284,885 | 62,790,053 | 139,628,325 | 121,307,305 |
| Change in net assets from operations | $95,527,383 | $52,816,641 | $79,374,976 | $176,667,202 | $131,856,956 |
| Total distributions to shareholders | $(19,692,511) | $(14,725,525) | $(12,418,815) | $(26,868,795) | $(11,100,314) |
| Change in net assets from fund share transactions | $26,103,494 | $1,945,935 | $90,107,523 | $43,245,778 | $39,426,495 |
| Total change in net assets | $101,938,366 | $40,037,051 | $157,063,684 | $193,044,185 | $160,183,137 |
| Net assets | | | | | |
| At beginning of period | 593,670,700 | 323,008,007 | 327,469,856 | 599,902,076 | 332,317,716 |
| At end of period | $695,609,066 | $363,045,058 | $484,533,540 | $792,946,261 | $492,500,853 |
| Year ended 4/30/21 | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Change in net assets | | | | | |
| From operations | | | | | |
| Net investment income (loss) | $6,977,461 | $3,642,128 | $3,619,788 | $1,904,382 | $520,918 |
| Net realized gain (loss) | 10,570,653 | 2,006,966 | 2,781,019 | 1,360,365 | 214,680 |
| Net unrealized gain (loss) | 157,970,864 | 99,655,196 | 101,104,166 | 55,212,392 | 13,782,441 |
| Change in net assets from operations | $175,518,978 | $105,304,290 | $107,504,973 | $58,477,139 | $14,518,039 |
| Total distributions to shareholders | $(15,517,988) | $(7,226,087) | $(7,074,896) | $(3,668,161) | $(777,663) |
| Change in net assets from fund share transactions | $19,166,545 | $29,919,909 | $26,744,709 | $21,224,931 | $22,136,259 |
| Total change in net assets | $179,167,535 | $127,998,112 | $127,174,786 | $76,033,909 | $35,876,635 |
| Net assets | | | | | |
| At beginning of period | 434,480,112 | 230,227,336 | 237,877,341 | 124,956,683 | 24,053,036 |
| At end of period | $613,647,647 | $358,225,448 | $365,052,127 | $200,990,592 | $59,929,671 |
See Notes to Financial Statements
Statements of Changes in Net Assets – continued
| Year ended 4/30/20 | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Change in net assets | | | | | |
| From operations | | | | | |
| Net investment income (loss) | $13,176,201 | $8,130,201 | $7,492,778 | $12,918,085 | $6,639,305 |
| Net realized gain (loss) | 2,888,628 | 6,743,176 | 1,831,940 | 9,328,016 | 2,000,039 |
| Net unrealized gain (loss) | (2,003,984) | (6,568,255) | (6,688,693) | (32,315,729) | (24,925,627) |
| Change in net assets from operations | $14,060,845 | $8,305,122 | $2,636,025 | $(10,069,628) | $(16,286,283) |
| Total distributions to shareholders | $(21,037,176) | $(16,362,312) | $(11,561,295) | $(32,529,458) | $(12,938,370) |
| Change in net assets from fund share transactions | $25,991,072 | $(11,187,535) | $43,922,853 | $53,145,640 | $73,008,584 |
| Total change in net assets | $19,014,741 | $(19,244,725) | $34,997,583 | $10,546,554 | $43,783,931 |
| Net assets | | | | | |
| At beginning of period | 574,655,959 | 342,252,732 | 292,472,273 | 589,355,522 | 288,533,785 |
| At end of period | $593,670,700 | $323,008,007 | $327,469,856 | $599,902,076 | $332,317,716 |
| Year ended 4/30/20 | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Change in net assets | | | | | |
| From operations | | | | | |
| Net investment income (loss) | $8,360,469 | $4,202,125 | $4,250,451 | $2,109,560 | $339,255 |
| Net realized gain (loss) | 6,522,771 | 2,681,312 | 3,092,203 | 1,231,690 | 147,639 |
| Net unrealized gain (loss) | (38,974,485) | (21,767,424) | (22,474,353) | (11,335,462) | (1,784,565) |
| Change in net assets from operations | $(24,091,245) | $(14,883,987) | $(15,131,699) | $(7,994,212) | $(1,297,671) |
| Total distributions to shareholders | $(25,567,413) | $(9,201,300) | $(10,246,366) | $(4,557,091) | $(533,610) |
| Change in net assets from fund share transactions | $57,248,217 | $55,249,920 | $51,809,993 | $34,110,838 | $15,825,604 |
| Total change in net assets | $7,589,559 | $31,164,633 | $26,431,928 | $21,559,535 | $13,994,323 |
| Net assets | | | | | |
| At beginning of period | 426,890,553 | 199,062,703 | 211,445,413 | 103,397,148 | 10,058,713 |
| At end of period | $434,480,112 | $230,227,336 | $237,877,341 | $124,956,683 | $24,053,036 |
See Notes to Financial Statements
Financial Statements
Financial Highlights
MFS LIFETIME INCOME FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.29 | $12.39 | $12.25 | $12.20 | $12.08 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.23 | $0.30 | $0.31 | $0.27 | $0.21 |
| Net realized and unrealized gain (loss) | 1.72 | 0.05 | 0.30 | 0.20 | 0.39 |
| Total from investment operations | $1.95 | $0.35 | $0.61 | $0.47 | $0.60 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.27) | $(0.31) | $(0.32) | $(0.27) | $(0.24) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.40) | $(0.45) | $(0.47) | $(0.42) | $(0.48) |
| Net asset value, end of period (x) | $13.84 | $12.29 | $12.39 | $12.25 | $12.20 |
| Total return (%) (r)(s)(t)(x) | 16.01 | 2.78 | 5.18 | 3.84 | 5.09 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.43 | 0.45 | 0.45 | 0.45 | 0.46 |
| Expenses after expense reductions (f)(h) | 0.23 | 0.23 | 0.23 | 0.24 | 0.25 |
| Net investment income (loss) (l) | 1.77 | 2.37 | 2.57 | 2.19 | 1.74 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $164,096 | $124,123 | $111,591 | $108,482 | $115,872 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME INCOME FUND − continued
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.29 | $12.40 | $12.25 | $12.20 | $12.08 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.15 | $0.20 | $0.22 | $0.17 | $0.12 |
| Net realized and unrealized gain (loss) | 1.70 | 0.04 | 0.31 | 0.21 | 0.39 |
| Total from investment operations | $1.85 | $0.24 | $0.53 | $0.38 | $0.51 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.17) | $(0.21) | $(0.23) | $(0.18) | $(0.15) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.30) | $(0.35) | $(0.38) | $(0.33) | $(0.39) |
| Net asset value, end of period (x) | $13.84 | $12.29 | $12.40 | $12.25 | $12.20 |
| Total return (%) (r)(s)(t)(x) | 15.16 | 1.93 | 4.48 | 3.07 | 4.31 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.19 | 1.20 | 1.20 | 1.20 | 1.21 |
| Expenses after expense reductions (f)(h) | 0.98 | 0.98 | 0.99 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 1.15 | 1.61 | 1.81 | 1.40 | 0.98 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $3,347 | $5,774 | $9,111 | $11,818 | $15,801 |
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.28 | $12.39 | $12.25 | $12.19 | $12.08 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.15 | $0.20 | $0.22 | $0.18 | $0.12 |
| Net realized and unrealized gain (loss) | 1.70 | 0.04 | 0.30 | 0.21 | 0.38 |
| Total from investment operations | $1.85 | $0.24 | $0.52 | $0.39 | $0.50 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.17) | $(0.21) | $(0.23) | $(0.18) | $(0.15) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.30) | $(0.35) | $(0.38) | $(0.33) | $(0.39) |
| Net asset value, end of period (x) | $13.83 | $12.28 | $12.39 | $12.25 | $12.19 |
| Total return (%) (r)(s)(t)(x) | 15.17 | 1.93 | 4.40 | 3.15 | 4.22 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.19 | 1.20 | 1.20 | 1.20 | 1.21 |
| Expenses after expense reductions (f)(h) | 0.98 | 0.98 | 0.99 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 1.16 | 1.60 | 1.80 | 1.43 | 0.98 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $81,542 | $98,286 | $112,773 | $128,791 | $147,518 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME INCOME FUND − continued
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.29 | $12.40 | $12.25 | $12.20 | $12.08 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.28 | $0.33 | $0.34 | $0.31 | $0.24 |
| Net realized and unrealized gain (loss) | 1.70 | 0.04 | 0.31 | 0.19 | 0.39 |
| Total from investment operations | $1.98 | $0.37 | $0.65 | $0.50 | $0.63 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.30) | $(0.34) | $(0.35) | $(0.30) | $(0.27) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.43) | $(0.48) | $(0.50) | $(0.45) | $(0.51) |
| Net asset value, end of period (x) | $13.84 | $12.29 | $12.40 | $12.25 | $12.20 |
| Total return (%) (r)(s)(t)(x) | 16.30 | 2.96 | 5.53 | 4.10 | 5.35 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.18 | 0.20 | 0.20 | 0.20 | 0.21 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.14 | 2.61 | 2.82 | 2.46 | 1.98 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $46,956 | $34,513 | $34,654 | $32,496 | $32,683 |
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.30 | $12.41 | $12.26 | $12.21 | $12.09 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.14 | $0.20 | $0.21 | $0.18 | $0.12 |
| Net realized and unrealized gain (loss) | 1.71 | 0.04 | 0.32 | 0.20 | 0.39 |
| Total from investment operations | $1.85 | $0.24 | $0.53 | $0.38 | $0.51 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.17) | $(0.21) | $(0.23) | $(0.18) | $(0.15) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.30) | $(0.35) | $(0.38) | $(0.33) | $(0.39) |
| Net asset value, end of period (x) | $13.85 | $12.30 | $12.41 | $12.26 | $12.21 |
| Total return (%) (r)(s)(t)(x) | 15.15 | 1.93 | 4.48 | 3.06 | 4.31 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.19 | 1.20 | 1.20 | 1.20 | 1.21 |
| Expenses after expense reductions (f)(h) | 0.98 | 0.98 | 0.98 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 1.08 | 1.58 | 1.72 | 1.42 | 0.96 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $1,932 | $2,493 | $3,977 | $4,344 | $4,453 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME INCOME FUND − continued
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.29 | $12.40 | $12.26 | $12.20 | $12.08 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.21 | $0.26 | $0.28 | $0.24 | $0.18 |
| Net realized and unrealized gain (loss) | 1.71 | 0.05 | 0.30 | 0.21 | 0.39 |
| Total from investment operations | $1.92 | $0.31 | $0.58 | $0.45 | $0.57 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.24) | $(0.28) | $(0.29) | $(0.24) | $(0.21) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.37) | $(0.42) | $(0.44) | $(0.39) | $(0.45) |
| Net asset value, end of period (x) | $13.84 | $12.29 | $12.40 | $12.26 | $12.20 |
| Total return (%) (r)(s)(t)(x) | 15.73 | 2.44 | 4.92 | 3.67 | 4.83 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.69 | 0.70 | 0.70 | 0.70 | 0.71 |
| Expenses after expense reductions (f)(h) | 0.48 | 0.48 | 0.49 | 0.49 | 0.50 |
| Net investment income (loss) (l) | 1.60 | 2.07 | 2.30 | 1.91 | 1.49 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $10,823 | $14,259 | $19,458 | $27,110 | $31,542 |
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.29 | $12.40 | $12.25 | $12.20 | $12.08 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.25 | $0.30 | $0.31 | $0.27 | $0.21 |
| Net realized and unrealized gain (loss) | 1.70 | 0.04 | 0.31 | 0.20 | 0.39 |
| Total from investment operations | $1.95 | $0.34 | $0.62 | $0.47 | $0.60 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.27) | $(0.31) | $(0.32) | $(0.27) | $(0.24) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.40) | $(0.45) | $(0.47) | $(0.42) | $(0.48) |
| Net asset value, end of period (x) | $13.84 | $12.29 | $12.40 | $12.25 | $12.20 |
| Total return (%) (r)(s)(t)(x) | 16.01 | 2.70 | 5.26 | 3.84 | 5.09 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.43 | 0.45 | 0.45 | 0.45 | 0.47 |
| Expenses after expense reductions (f)(h) | 0.23 | 0.23 | 0.24 | 0.24 | 0.25 |
| Net investment income (loss) (l) | 1.90 | 2.39 | 2.57 | 2.21 | 1.74 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $75,909 | $67,237 | $54,540 | $54,156 | $49,628 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME INCOME FUND − continued
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.29 | $12.39 | $12.25 | $12.20 | $12.08 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.28 | $0.33 | $0.34 | $0.31 | $0.24 |
| Net realized and unrealized gain (loss) | 1.70 | 0.05 | 0.30 | 0.19 | 0.39 |
| Total from investment operations | $1.98 | $0.38 | $0.64 | $0.50 | $0.63 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.30) | $(0.34) | $(0.35) | $(0.30) | $(0.27) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.43) | $(0.48) | $(0.50) | $(0.45) | $(0.51) |
| Net asset value, end of period (x) | $13.84 | $12.29 | $12.39 | $12.25 | $12.20 |
| Total return (%) (r)(s)(t)(x) | 16.30 | 3.04 | 5.44 | 4.10 | 5.35 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.19 | 0.20 | 0.20 | 0.21 | 0.21 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.14 | 2.61 | 2.82 | 2.51 | 2.01 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $31,138 | $41,807 | $47,906 | $52,790 | $112,472 |
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $12.32 | $12.43 | $12.29 | $12.23 | $12.37 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.30 | $0.34 | $0.35 | $0.35 | $0.11 |
| Net realized and unrealized gain (loss) | 1.71 | 0.04 | 0.30 | 0.17 | 0.21 |
| Total from investment operations | $2.01 | $0.38 | $0.65 | $0.52 | $0.32 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.32) | $(0.35) | $(0.36) | $(0.31) | $(0.22) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.45) | $(0.49) | $(0.51) | $(0.46) | $(0.46) |
| Net asset value, end of period (x) | $13.88 | $12.32 | $12.43 | $12.29 | $12.23 |
| Total return (%) (r)(s)(t)(x) | 16.44 | 3.04 | 5.52 | 4.28 | 2.70(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.10 | 0.12 | 0.12 | 0.10 | 0.21(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 2.24 | 2.69 | 2.84 | 2.83 | 1.34(a) |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $87,750 | $42,065 | $33,595 | $26,728 | $6,775 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME INCOME FUND − continued
| | Year ended |
| Class 529A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $10.04 | $10.15 | $10.06 | $10.04 | $9.98 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.20 | $0.24 | $0.25 | $0.22 | $0.17 |
| Net realized and unrealized gain (loss) | 1.39 | 0.04 | 0.25 | 0.17 | 0.32 |
| Total from investment operations | $1.59 | $0.28 | $0.50 | $0.39 | $0.49 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.22) | $(0.25) | $(0.26) | $(0.22) | $(0.19) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.35) | $(0.39) | $(0.41) | $(0.37) | $(0.43) |
| Net asset value, end of period (x) | $11.28 | $10.04 | $10.15 | $10.06 | $10.04 |
| Total return (%) (r)(s)(t)(x) | 15.95 | 2.71 | 5.16 | 3.84 | 5.08 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.48 | 0.50 | 0.50 | 0.53 | 0.56 |
| Expenses after expense reductions (f)(h) | 0.27 | 0.27 | 0.27 | 0.28 | 0.29 |
| Net investment income (loss) (l) | 1.84 | 2.33 | 2.55 | 2.16 | 1.70 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $159,423 | $127,306 | $108,398 | $83,713 | $73,448 |
| | Year ended |
| Class 529B | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $10.04 | $10.15 | $10.06 | $10.04 | $9.98 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.16 | $0.16 | $0.18 | $0.14 | $0.10 |
| Net realized and unrealized gain (loss) | 1.40 | 0.04 | 0.24 | 0.17 | 0.32 |
| Total from investment operations | $1.56 | $0.20 | $0.42 | $0.31 | $0.42 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.18) | $(0.17) | $(0.18) | $(0.14) | $(0.12) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.31) | $(0.31) | $(0.33) | $(0.29) | $(0.36) |
| Net asset value, end of period (x) | $11.29 | $10.04 | $10.15 | $10.06 | $10.04 |
| Total return (%) (r)(s)(t)(x) | 15.63 | 1.94 | 4.38 | 3.07 | 4.30 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.81 | 1.25 | 1.25 | 1.28 | 1.31 |
| Expenses after expense reductions (f)(h) | 0.59 | 1.02 | 1.02 | 1.04 | 1.05 |
| Net investment income (loss) (l) | 1.51 | 1.58 | 1.78 | 1.36 | 0.96 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $3,826 | $4,611 | $4,492 | $3,975 | $4,722 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME INCOME FUND − continued
| | Year ended |
| Class 529C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $10.03 | $10.15 | $10.05 | $10.04 | $9.98 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.12 | $0.16 | $0.18 | $0.14 | $0.09 |
| Net realized and unrealized gain (loss) | 1.40 | 0.03 | 0.25 | 0.16 | 0.33 |
| Total from investment operations | $1.52 | $0.19 | $0.43 | $0.30 | $0.42 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.14) | $(0.17) | $(0.18) | $(0.14) | $(0.12) |
| From net realized gain | (0.13) | (0.14) | (0.15) | (0.15) | (0.24) |
| Total distributions declared to shareholders | $(0.27) | $(0.31) | $(0.33) | $(0.29) | $(0.36) |
| Net asset value, end of period (x) | $11.28 | $10.03 | $10.15 | $10.05 | $10.04 |
| Total return (%) (r)(s)(t)(x) | 15.20 | 1.83 | 4.48 | 2.97 | 4.30 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.24 | 1.25 | 1.25 | 1.28 | 1.31 |
| Expenses after expense reductions (f)(h) | 1.02 | 1.03 | 1.03 | 1.04 | 1.05 |
| Net investment income (loss) (l) | 1.12 | 1.57 | 1.79 | 1.40 | 0.94 |
| Portfolio turnover | 12 | 15 | 10 | 11 | 25 |
| Net assets at end of period (000 omitted) | $28,866 | $31,196 | $34,160 | $34,039 | $32,166 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2020 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.69 | $12.98 | $13.01 | $12.94 | $13.08 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.25 | $0.30 | $0.33 | $0.29 | $0.23 |
| Net realized and unrealized gain (loss) | 1.77 | 0.04 | 0.30 | 0.35 | 0.60 |
| Total from investment operations | $2.02 | $0.34 | $0.63 | $0.64 | $0.83 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.28) | $(0.32) | $(0.32) | $(0.35) | $(0.21) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.55) | $(0.63) | $(0.66) | $(0.57) | $(0.97) |
| Net asset value, end of period (x) | $14.16 | $12.69 | $12.98 | $13.01 | $12.94 |
| Total return (%) (r)(s)(t)(x) | 16.02 | 2.46 | 5.30 | 4.94 | 6.60 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.47 | 0.51 | 0.48 | 0.48 | 0.48 |
| Expenses after expense reductions (f)(h) | 0.24 | 0.24 | 0.23 | 0.24 | 0.25 |
| Net investment income (loss) (l) | 1.83 | 2.32 | 2.56 | 2.22 | 1.73 |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $46,331 | $40,186 | $44,271 | $46,580 | $50,239 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.63 | $12.91 | $12.92 | $12.84 | $12.98 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.15 | $0.21 | $0.23 | $0.19 | $0.13 |
| Net realized and unrealized gain (loss) | 1.75 | 0.03 | 0.31 | 0.35 | 0.59 |
| Total from investment operations | $1.90 | $0.24 | $0.54 | $0.54 | $0.72 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.14) | $(0.21) | $(0.21) | $(0.24) | $(0.10) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.41) | $(0.52) | $(0.55) | $(0.46) | $(0.86) |
| Net asset value, end of period (x) | $14.12 | $12.63 | $12.91 | $12.92 | $12.84 |
| Total return (%) (r)(s)(t)(x) | 15.15 | 1.72 | 4.49 | 4.21 | 5.75 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.22 | 1.26 | 1.23 | 1.23 | 1.22 |
| Expenses after expense reductions (f)(h) | 0.99 | 0.99 | 0.98 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 1.08 | 1.58 | 1.81 | 1.46 | 0.99 |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $2,109 | $2,492 | $3,148 | $4,420 | $5,425 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2020 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.41 | $12.71 | $12.74 | $12.67 | $12.83 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.15 | $0.20 | $0.23 | $0.19 | $0.13 |
| Net realized and unrealized gain (loss) | 1.73 | 0.03 | 0.30 | 0.34 | 0.58 |
| Total from investment operations | $1.88 | $0.23 | $0.53 | $0.53 | $0.71 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.10) | $(0.22) | $(0.22) | $(0.24) | $(0.11) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.37) | $(0.53) | $(0.56) | $(0.46) | $(0.87) |
| Net asset value, end of period (x) | $13.92 | $12.41 | $12.71 | $12.74 | $12.67 |
| Total return (%) (r)(s)(t)(x) | 15.21 | 1.64 | 4.50 | 4.20 | 5.76 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.23 | 1.26 | 1.23 | 1.23 | 1.23 |
| Expenses after expense reductions (f)(h) | 0.99 | 0.99 | 0.98 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 1.11 | 1.58 | 1.82 | 1.47 | 0.98 |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $6,298 | $10,400 | $11,881 | $13,178 | $16,629 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.79 | $13.07 | $13.10 | $13.03 | $13.16 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.30 | $0.34 | $0.36 | $0.33 | $0.30 |
| Net realized and unrealized gain (loss) | 1.77 | 0.05 | 0.31 | 0.35 | 0.57 |
| Total from investment operations | $2.07 | $0.39 | $0.67 | $0.68 | $0.87 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.31) | $(0.36) | $(0.36) | $(0.39) | $(0.24) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.58) | $(0.67) | $(0.70) | $(0.61) | $(1.00) |
| Net asset value, end of period (x) | $14.28 | $12.79 | $13.07 | $13.10 | $13.03 |
| Total return (%) (r)(s)(t)(x) | 16.35 | 2.77 | 5.54 | 5.19 | 6.91 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.22 | 0.26 | 0.23 | 0.23 | 0.21 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.13 | 2.54 | 2.76 | 2.50 | 2.25 |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $3,714 | $1,980 | $2,134 | $1,742 | $1,631 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2020 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.64 | $12.91 | $12.94 | $12.88 | $13.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.14 | $0.20 | $0.23 | $0.20 | $0.12 |
| Net realized and unrealized gain (loss) | 1.77 | 0.03 | 0.31 | 0.34 | 0.60 |
| Total from investment operations | $1.91 | $0.23 | $0.54 | $0.54 | $0.72 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.08) | $(0.19) | $(0.23) | $(0.26) | $(0.08) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.35) | $(0.50) | $(0.57) | $(0.48) | $(0.84) |
| Net asset value, end of period (x) | $14.20 | $12.64 | $12.91 | $12.94 | $12.88 |
| Total return (%) (r)(s)(t)(x) | 15.19 | 1.64 | 4.51 | 4.19 | 5.73 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.23 | 1.26 | 1.23 | 1.23 | 1.22 |
| Expenses after expense reductions (f)(h) | 0.99 | 0.99 | 0.98 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 1.02 | 1.57 | 1.82 | 1.49 | 0.95 |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $1,714 | $3,348 | $4,510 | $4,587 | $4,355 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.61 | $12.88 | $12.91 | $12.84 | $13.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.22 | $0.27 | $0.30 | $0.26 | $0.19 |
| Net realized and unrealized gain (loss) | 1.75 | 0.04 | 0.30 | 0.35 | 0.59 |
| Total from investment operations | $1.97 | $0.31 | $0.60 | $0.61 | $0.78 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.23) | $(0.27) | $(0.29) | $(0.32) | $(0.18) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.50) | $(0.58) | $(0.63) | $(0.54) | $(0.94) |
| Net asset value, end of period (x) | $14.08 | $12.61 | $12.88 | $12.91 | $12.84 |
| Total return (%) (r)(s)(t)(x) | 15.72 | 2.25 | 5.04 | 4.73 | 6.26 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.73 | 0.76 | 0.73 | 0.73 | 0.73 |
| Expenses after expense reductions (f)(h) | 0.49 | 0.49 | 0.48 | 0.49 | 0.50 |
| Net investment income (loss) (l) | 1.59 | 2.05 | 2.32 | 1.97 | 1.49 |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $30,795 | $36,927 | $47,259 | $72,233 | $76,217 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2020 FUND − continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.69 | $12.98 | $13.01 | $12.95 | $13.09 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.25 | $0.31 | $0.34 | $0.30 | $0.22 |
| Net realized and unrealized gain (loss) | 1.77 | 0.04 | 0.30 | 0.34 | 0.61 |
| Total from investment operations | $2.02 | $0.35 | $0.64 | $0.64 | $0.83 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.27) | $(0.33) | $(0.33) | $(0.36) | $(0.21) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.54) | $(0.64) | $(0.67) | $(0.58) | $(0.97) |
| Net asset value, end of period (x) | $14.17 | $12.69 | $12.98 | $13.01 | $12.95 |
| Total return (%) (r)(s)(t)(x) | 16.07 | 2.48 | 5.33 | 4.90 | 6.59 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.47 | 0.51 | 0.48 | 0.48 | 0.48 |
| Expenses after expense reductions (f)(h) | 0.24 | 0.24 | 0.23 | 0.24 | 0.25 |
| Net investment income (loss) (l) | 1.84 | 2.34 | 2.61 | 2.24 | 1.71 |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $87,643 | $88,804 | $79,478 | $84,245 | $74,655 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.78 | $13.07 | $13.10 | $13.01 | $13.15 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.29 | $0.34 | $0.37 | $0.34 | $0.27 |
| Net realized and unrealized gain (loss) | 1.78 | 0.04 | 0.30 | 0.34 | 0.59 |
| Total from investment operations | $2.07 | $0.38 | $0.67 | $0.68 | $0.86 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.30) | $(0.36) | $(0.36) | $(0.37) | $(0.24) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.57) | $(0.67) | $(0.70) | $(0.59) | $(1.00) |
| Net asset value, end of period (x) | $14.28 | $12.78 | $13.07 | $13.10 | $13.01 |
| Total return (%) (r)(s)(t)(x) | 16.36 | 2.69 | 5.55 | 5.24 | 6.83 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.23 | 0.26 | 0.23 | 0.24 | 0.23 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.08 | 2.57 | 2.82 | 2.56 | 2.02 |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $49,050 | $77,500 | $85,763 | $87,475 | $146,535 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2020 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $12.77 | $13.05 | $13.09 | $13.02 | $13.60 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.31 | $0.36 | $0.38 | $0.38 | $0.11 |
| Net realized and unrealized gain (loss) | 1.78 | 0.04 | 0.30 | 0.31 | 0.32 |
| Total from investment operations | $2.09 | $0.40 | $0.68 | $0.69 | $0.43 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.33) | $(0.37) | $(0.38) | $(0.40) | $(0.25) |
| From net realized gain | (0.27) | (0.31) | (0.34) | (0.22) | (0.76) |
| Total distributions declared to shareholders | $(0.60) | $(0.68) | $(0.72) | $(0.62) | $(1.01) |
| Net asset value, end of period (x) | $14.26 | $12.77 | $13.05 | $13.09 | $13.02 |
| Total return (%) (r)(s)(t)(x) | 16.49 | 2.91 | 5.62 | 5.33 | 3.43(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.08 | 0.12 | 0.11 | 0.10 | 0.16(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 2.27 | 2.73 | 2.95 | 2.82 | 1.28(a) |
| Portfolio turnover | 30 | 16 | 17 | 19 | 35 |
| Net assets at end of period (000 omitted) | $135,391 | $61,371 | $63,809 | $45,280 | $21,091 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2025 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.75 | $13.03 | $12.83 | $12.35 | $11.76 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.25 | $0.30 | $0.33 | $0.29 | $0.20 |
| Net realized and unrealized gain (loss) | 2.38 | (0.11) | 0.35 | 0.62 | 0.84 |
| Total from investment operations | $2.63 | $0.19 | $0.68 | $0.91 | $1.04 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.26) | $(0.28) | $(0.31) | $(0.35) | $(0.17) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.38) | $(0.47) | $(0.48) | $(0.43) | $(0.45) |
| Net asset value, end of period (x) | $15.00 | $12.75 | $13.03 | $12.83 | $12.35 |
| Total return (%) (r)(s)(t)(x) | 20.70 | 1.25 | 5.70 | 7.34 | 9.03 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.47 | 0.51 | 0.52 | 0.54 | 0.55 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.23 | 0.22 | 0.23 | 0.24 |
| Net investment income (loss) (l) | 1.77 | 2.25 | 2.62 | 2.28 | 1.62 |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $29,637 | $26,335 | $19,689 | $16,710 | $14,518 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.64 | $12.93 | $12.72 | $12.26 | $11.68 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.14 | $0.20 | $0.23 | $0.19 | $0.10 |
| Net realized and unrealized gain (loss) | 2.36 | (0.12) | 0.36 | 0.60 | 0.85 |
| Total from investment operations | $2.50 | $0.08 | $0.59 | $0.79 | $0.95 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.13) | $(0.18) | $(0.21) | $(0.25) | $(0.09) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.25) | $(0.37) | $(0.38) | $(0.33) | $(0.37) |
| Net asset value, end of period (x) | $14.89 | $12.64 | $12.93 | $12.72 | $12.26 |
| Total return (%) (r)(s)(t)(x) | 19.83 | 0.48 | 4.96 | 6.40 | 8.23 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.22 | 1.26 | 1.27 | 1.29 | 1.29 |
| Expenses after expense reductions (f)(h) | 1.00 | 0.99 | 0.97 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 1.00 | 1.49 | 1.82 | 1.47 | 0.86 |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $1,447 | $1,632 | $1,501 | $1,472 | $1,340 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2025 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.58 | $12.86 | $12.66 | $12.21 | $11.63 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.14 | $0.19 | $0.22 | $0.19 | $0.10 |
| Net realized and unrealized gain (loss) | 2.35 | (0.11) | 0.37 | 0.60 | 0.84 |
| Total from investment operations | $2.49 | $0.08 | $0.59 | $0.79 | $0.94 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.15) | $(0.17) | $(0.22) | $(0.26) | $(0.08) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.27) | $(0.36) | $(0.39) | $(0.34) | $(0.36) |
| Net asset value, end of period (x) | $14.80 | $12.58 | $12.86 | $12.66 | $12.21 |
| Total return (%) (r)(s)(t)(x) | 19.86 | 0.45 | 4.94 | 6.42 | 8.24 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.22 | 1.26 | 1.27 | 1.29 | 1.29 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 0.99 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 1.03 | 1.46 | 1.78 | 1.50 | 0.83 |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $4,618 | $3,852 | $4,186 | $3,571 | $3,311 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.79 | $13.08 | $12.87 | $12.40 | $11.79 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.30 | $0.33 | $0.41 | $0.25 | $0.27 |
| Net realized and unrealized gain (loss) | 2.38 | (0.12) | 0.32 | 0.68 | 0.82 |
| Total from investment operations | $2.68 | $0.21 | $0.73 | $0.93 | $1.09 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.29) | $(0.31) | $(0.35) | $(0.38) | $(0.20) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.41) | $(0.50) | $(0.52) | $(0.46) | $(0.48) |
| Net asset value, end of period (x) | $15.06 | $12.79 | $13.08 | $12.87 | $12.40 |
| Total return (%) (r)(s)(t)(x) | 21.10 | 1.38 | 6.05 | 7.44 | 9.42 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.22 | 0.26 | 0.27 | 0.32 | 0.28 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.08 | 2.49 | 3.23 | 1.96 | 2.25 |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $3,131 | $1,445 | $1,228 | $538 | $127 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2025 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.65 | $12.95 | $12.76 | $12.33 | $11.79 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.09 | $0.19 | $0.22 | $0.20 | $0.09 |
| Net realized and unrealized gain (loss) | 2.42 | (0.12) | 0.37 | 0.60 | 0.86 |
| Total from investment operations | $2.51 | $0.07 | $0.59 | $0.80 | $0.95 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $— | $(0.18) | $(0.23) | $(0.29) | $(0.13) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.12) | $(0.37) | $(0.40) | $(0.37) | $(0.41) |
| Net asset value, end of period (x) | $15.04 | $12.65 | $12.95 | $12.76 | $12.33 |
| Total return (%) (r)(s)(t)(x) | 19.86 | 0.37 | 4.97 | 6.46 | 8.24 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.23 | 1.26 | 1.27 | 1.30 | 1.31 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 0.99 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.67 | 1.46 | 1.76 | 1.58 | 0.77 |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $374 | $1,902 | $1,578 | $1,234 | $432 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.69 | $12.96 | $12.74 | $12.29 | $11.73 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.21 | $0.25 | $0.28 | $0.26 | $0.17 |
| Net realized and unrealized gain (loss) | 2.37 | (0.11) | 0.37 | 0.60 | 0.84 |
| Total from investment operations | $2.58 | $0.14 | $0.65 | $0.86 | $1.01 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.20) | $(0.22) | $(0.26) | $(0.33) | $(0.17) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.32) | $(0.41) | $(0.43) | $(0.41) | $(0.45) |
| Net asset value, end of period (x) | $14.95 | $12.69 | $12.96 | $12.74 | $12.29 |
| Total return (%) (r)(s)(t)(x) | 20.43 | 0.93 | 5.48 | 6.95 | 8.75 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.73 | 0.76 | 0.77 | 0.79 | 0.81 |
| Expenses after expense reductions (f)(h) | 0.50 | 0.50 | 0.49 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 1.49 | 1.89 | 2.21 | 2.06 | 1.40 |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $21,994 | $26,607 | $36,121 | $35,799 | $23,253 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2025 FUND −��continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.73 | $13.02 | $12.81 | $12.35 | $11.76 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.25 | $0.30 | $0.33 | $0.29 | $0.20 |
| Net realized and unrealized gain (loss) | 2.38 | (0.12) | 0.36 | 0.60 | 0.85 |
| Total from investment operations | $2.63 | $0.18 | $0.69 | $0.89 | $1.05 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.26) | $(0.28) | $(0.31) | $(0.35) | $(0.18) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.38) | $(0.47) | $(0.48) | $(0.43) | $(0.46) |
| Net asset value, end of period (x) | $14.98 | $12.73 | $13.02 | $12.81 | $12.35 |
| Total return (%) (r)(s)(t)(x) | 20.74 | 1.17 | 5.75 | 7.19 | 9.08 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.47 | 0.51 | 0.52 | 0.54 | 0.55 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.24 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.80 | 2.25 | 2.56 | 2.24 | 1.61 |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $112,826 | $95,013 | $76,112 | $63,426 | $39,042 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $12.81 | $13.10 | $12.88 | $12.40 | $11.79 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.28 | $0.33 | $0.36 | $0.35 | $0.22 |
| Net realized and unrealized gain (loss) | 2.40 | (0.12) | 0.37 | 0.58 | 0.87 |
| Total from investment operations | $2.68 | $0.21 | $0.73 | $0.93 | $1.09 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.28) | $(0.31) | $(0.34) | $(0.37) | $(0.20) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.40) | $(0.50) | $(0.51) | $(0.45) | $(0.48) |
| Net asset value, end of period (x) | $15.09 | $12.81 | $13.10 | $12.88 | $12.40 |
| Total return (%) (r)(s)(t)(x) | 21.06 | 1.37 | 6.06 | 7.43 | 9.42 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.23 | 0.26 | 0.27 | 0.28 | 0.30 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 2.00 | 2.49 | 2.82 | 2.68 | 1.84 |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $82,037 | $105,160 | $105,032 | $81,894 | $135,040 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2025 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $12.82 | $13.10 | $12.88 | $12.41 | $12.30 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.32 | $0.35 | $0.38 | $0.40 | $0.11 |
| Net realized and unrealized gain (loss) | 2.38 | (0.12) | 0.37 | 0.55 | 0.48 |
| Total from investment operations | $2.70 | $0.23 | $0.75 | $0.95 | $0.59 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.31) | $(0.32) | $(0.36) | $(0.40) | $(0.20) |
| From net realized gain | (0.12) | (0.19) | (0.17) | (0.08) | (0.28) |
| Total distributions declared to shareholders | $(0.43) | $(0.51) | $(0.53) | $(0.48) | $(0.48) |
| Net asset value, end of period (x) | $15.09 | $12.82 | $13.10 | $12.88 | $12.41 |
| Total return (%) (r)(s)(t)(x) | 21.17 | 1.57 | 6.21 | 7.57 | 5.02(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.08 | 0.12 | 0.14 | 0.15 | 0.20(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 2.22 | 2.63 | 2.93 | 3.08 | 1.31(a) |
| Portfolio turnover | 24 | 18 | 14 | 37 | 33 |
| Net assets at end of period (000 omitted) | $228,469 | $65,523 | $47,026 | $32,384 | $10,834 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2030 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.61 | $15.59 | $15.48 | $14.57 | $13.91 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.26 | $0.32 | $0.37 | $0.34 | $0.19 |
| Net realized and unrealized gain (loss) | 3.96 | (0.46) | 0.49 | 1.13 | 1.42 |
| Total from investment operations | $4.22 | $(0.14) | $0.86 | $1.47 | $1.61 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.27) | $(0.32) | $(0.36) | $(0.36) | $(0.19) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.63) | $(0.84) | $(0.75) | $(0.56) | $(0.95) |
| Net asset value, end of period (x) | $18.20 | $14.61 | $15.59 | $15.48 | $14.57 |
| Total return (%) (r)(s)(t)(x) | 29.17 | (1.36) | 6.24 | 10.09 | 12.01 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.44 | 0.46 | 0.46 | 0.46 | 0.47 |
| Expenses after expense reductions (f)(h) | 0.24 | 0.24 | 0.23 | 0.23 | 0.25 |
| Net investment income (loss) (l) | 1.56 | 2.07 | 2.40 | 2.18 | 1.36 |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $81,398 | $66,732 | $63,579 | $61,458 | $57,961 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.41 | $15.37 | $15.26 | $14.37 | $13.73 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.13 | $0.20 | $0.25 | $0.21 | $0.08 |
| Net realized and unrealized gain (loss) | 3.91 | (0.46) | 0.50 | 1.13 | 1.40 |
| Total from investment operations | $4.04 | $(0.26) | $0.75 | $1.34 | $1.48 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.13) | $(0.18) | $(0.25) | $(0.25) | $(0.08) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.49) | $(0.70) | $(0.64) | $(0.45) | $(0.84) |
| Net asset value, end of period (x) | $17.96 | $14.41 | $15.37 | $15.26 | $14.37 |
| Total return (%) (r)(s)(t)(x) | 28.24 | (2.07) | 5.44 | 9.28 | 11.15 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.19 | 1.21 | 1.21 | 1.21 | 1.22 |
| Expenses after expense reductions (f)(h) | 0.99 | 0.99 | 0.99 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 0.82 | 1.29 | 1.67 | 1.42 | 0.60 |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $6,394 | $6,495 | $8,727 | $8,834 | $8,753 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2030 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.31 | $15.27 | $15.16 | $14.29 | $13.66 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.14 | $0.19 | $0.25 | $0.21 | $0.09 |
| Net realized and unrealized gain (loss) | 3.87 | (0.44) | 0.49 | 1.11 | 1.38 |
| Total from investment operations | $4.01 | $(0.25) | $0.74 | $1.32 | $1.47 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.12) | $(0.19) | $(0.24) | $(0.25) | $(0.08) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.48) | $(0.71) | $(0.63) | $(0.45) | $(0.84) |
| Net asset value, end of period (x) | $17.84 | $14.31 | $15.27 | $15.16 | $14.29 |
| Total return (%) (r)(s)(t)(x) | 28.24 | (2.05) | 5.46 | 9.21 | 11.17 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.19 | 1.21 | 1.21 | 1.21 | 1.22 |
| Expenses after expense reductions (f)(h) | 0.99 | 0.99 | 0.99 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 0.85 | 1.26 | 1.63 | 1.42 | 0.61 |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $12,826 | $13,474 | $15,790 | $15,885 | $15,827 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.69 | $15.66 | $15.55 | $14.63 | $14.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.31 | $0.36 | $0.42 | $0.38 | $0.28 |
| Net realized and unrealized gain (loss) | 3.98 | (0.46) | 0.48 | 1.14 | 1.33 |
| Total from investment operations | $4.29 | $(0.10) | $0.90 | $1.52 | $1.61 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.32) | $(0.35) | $(0.40) | $(0.40) | $(0.22) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.68) | $(0.87) | $(0.79) | $(0.60) | $(0.98) |
| Net asset value, end of period (x) | $18.30 | $14.69 | $15.66 | $15.55 | $14.63 |
| Total return (%) (r)(s)(t)(x) | 29.48 | (1.07) | 6.50 | 10.38 | 11.95 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.19 | 0.21 | 0.21 | 0.21 | 0.20 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.86 | 2.29 | 2.70 | 2.48 | 1.96 |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $6,274 | $2,395 | $2,282 | $2,171 | $1,743 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2030 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.43 | $15.42 | $15.32 | $14.44 | $13.78 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.11 | $0.21 | $0.26 | $0.21 | $0.08 |
| Net realized and unrealized gain (loss) | 3.94 | (0.46) | 0.48 | 1.13 | 1.40 |
| Total from investment operations | $4.05 | $(0.25) | $0.74 | $1.34 | $1.48 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.07) | $(0.22) | $(0.25) | $(0.26) | $(0.06) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.43) | $(0.74) | $(0.64) | $(0.46) | $(0.82) |
| Net asset value, end of period (x) | $18.05 | $14.43 | $15.42 | $15.32 | $14.44 |
| Total return (%) (r)(s)(t)(x) | 28.21 | (2.06) | 5.42 | 9.26 | 11.13 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.20 | 1.21 | 1.21 | 1.21 | 1.22 |
| Expenses after expense reductions (f)(h) | 0.99 | 1.00 | 0.99 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 0.66 | 1.38 | 1.69 | 1.38 | 0.57 |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $5,636 | $7,150 | $7,423 | $6,825 | $5,740 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.47 | $15.43 | $15.32 | $14.43 | $13.79 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.20 | $0.28 | $0.33 | $0.30 | $0.16 |
| Net realized and unrealized gain (loss) | 3.94 | (0.46) | 0.49 | 1.12 | 1.40 |
| Total from investment operations | $4.14 | $(0.18) | $0.82 | $1.42 | $1.56 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.21) | $(0.26) | $(0.32) | $(0.33) | $(0.16) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.57) | $(0.78) | $(0.71) | $(0.53) | $(0.92) |
| Net asset value, end of period (x) | $18.04 | $14.47 | $15.43 | $15.32 | $14.43 |
| Total return (%) (r)(s)(t)(x) | 28.84 | (1.60) | 6.00 | 9.80 | 11.73 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.70 | 0.71 | 0.71 | 0.71 | 0.72 |
| Expenses after expense reductions (f)(h) | 0.49 | 0.49 | 0.49 | 0.49 | 0.50 |
| Net investment income (loss) (l) | 1.24 | 1.78 | 2.17 | 1.95 | 1.13 |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $60,402 | $66,342 | $78,171 | $112,223 | $105,808 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2030 FUND − continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.57 | $15.54 | $15.44 | $14.54 | $13.88 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.26 | $0.32 | $0.37 | $0.34 | $0.19 |
| Net realized and unrealized gain (loss) | 3.95 | (0.45) | 0.49 | 1.12 | 1.42 |
| Total from investment operations | $4.21 | $(0.13) | $0.86 | $1.46 | $1.61 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.27) | $(0.32) | $(0.37) | $(0.36) | $(0.19) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.63) | $(0.84) | $(0.76) | $(0.56) | $(0.95) |
| Net asset value, end of period (x) | $18.15 | $14.57 | $15.54 | $15.44 | $14.54 |
| Total return (%) (r)(s)(t)(x) | 29.18 | (1.31) | 6.21 | 10.07 | 12.03 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.44 | 0.46 | 0.46 | 0.46 | 0.47 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.24 | 0.24 | 0.25 |
| Net investment income (loss) (l) | 1.58 | 2.06 | 2.44 | 2.20 | 1.34 |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $196,178 | $158,189 | $146,737 | $136,815 | $109,088 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.70 | $15.68 | $15.56 | $14.64 | $13.97 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.30 | $0.37 | $0.40 | $0.40 | $0.24 |
| Net realized and unrealized gain (loss) | 4.01 | (0.48) | 0.51 | 1.11 | 1.41 |
| Total from investment operations | $4.31 | $(0.11) | $0.91 | $1.51 | $1.65 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.31) | $(0.35) | $(0.40) | $(0.39) | $(0.22) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.67) | $(0.87) | $(0.79) | $(0.59) | $(0.98) |
| Net asset value, end of period (x) | $18.34 | $14.70 | $15.68 | $15.56 | $14.64 |
| Total return (%) (r)(s)(t)(x) | 29.58 | (1.14) | 6.56 | 10.30 | 12.28 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.20 | 0.21 | 0.21 | 0.21 | 0.22 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.80 | 2.32 | 2.61 | 2.57 | 1.66 |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $123,740 | $162,913 | $158,288 | $148,064 | $188,413 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2030 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $14.70 | $15.68 | $15.56 | $14.65 | $14.67 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.34 | $0.38 | $0.44 | $0.45 | $0.07 |
| Net realized and unrealized gain (loss) | 3.98 | (0.47) | 0.49 | 1.08 | 0.90 |
| Total from investment operations | $4.32 | $(0.09) | $0.93 | $1.53 | $0.97 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.33) | $(0.37) | $(0.42) | $(0.42) | $(0.23) |
| From net realized gain | (0.36) | (0.52) | (0.39) | (0.20) | (0.76) |
| Total distributions declared to shareholders | $(0.69) | $(0.89) | $(0.81) | $(0.62) | $(0.99) |
| Net asset value, end of period (x) | $18.33 | $14.70 | $15.68 | $15.56 | $14.65 |
| Total return (%) (r)(s)(t)(x) | 29.71 | (1.02) | 6.71 | 10.43 | 7.05(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.06 | 0.08 | 0.08 | 0.08 | 0.13(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 2.01 | 2.44 | 2.86 | 2.91 | 0.75(a) |
| Portfolio turnover | 27 | 18 | 18 | 19 | 50 |
| Net assets at end of period (000 omitted) | $300,098 | $116,212 | $108,358 | $73,753 | $33,584 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2035 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.79 | $14.94 | $14.61 | $13.49 | $12.35 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.23 | $0.29 | $0.34 | $0.31 | $0.16 |
| Net realized and unrealized gain (loss) | 5.04 | (0.85) | 0.52 | 1.28 | 1.44 |
| Total from investment operations | $5.27 | $(0.56) | $0.86 | $1.59 | $1.60 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.23) | $(0.29) | $(0.32) | $(0.37) | $(0.15) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.43) | $(0.59) | $(0.53) | $(0.47) | $(0.46) |
| Net asset value, end of period (x) | $18.63 | $13.79 | $14.94 | $14.61 | $13.49 |
| Total return (%) (r)(s)(t)(x) | 38.48 | (4.23) | 6.50 | 11.78 | 13.18 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.48 | 0.52 | 0.54 | 0.56 | 0.59 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.24 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.41 | 1.96 | 2.36 | 2.13 | 1.23 |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $27,770 | $20,382 | $16,563 | $15,369 | $10,591 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.70 | $14.84 | $14.49 | $13.39 | $12.26 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.11 | $0.17 | $0.22 | $0.19 | $0.06 |
| Net realized and unrealized gain (loss) | 4.99 | (0.85) | 0.54 | 1.28 | 1.43 |
| Total from investment operations | $5.10 | $(0.68) | $0.76 | $1.47 | $1.49 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.10) | $(0.16) | $(0.20) | $(0.27) | $(0.05) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.30) | $(0.46) | $(0.41) | $(0.37) | $(0.36) |
| Net asset value, end of period (x) | $18.50 | $13.70 | $14.84 | $14.49 | $13.39 |
| Total return (%) (r)(s)(t)(x) | 37.44 | (4.98) | 5.71 | 10.96 | 12.34 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.23 | 1.27 | 1.29 | 1.31 | 1.34 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.65 | 1.12 | 1.55 | 1.31 | 0.45 |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $1,597 | $1,387 | $1,650 | $1,730 | $1,314 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2035 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.62 | $14.78 | $14.45 | $13.35 | $12.22 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.10 | $0.19 | $0.22 | $0.19 | $0.05 |
| Net realized and unrealized gain (loss) | 4.97 | (0.87) | 0.53 | 1.28 | 1.43 |
| Total from investment operations | $5.07 | $(0.68) | $0.75 | $1.47 | $1.48 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.11) | $(0.18) | $(0.21) | $(0.27) | $(0.04) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.31) | $(0.48) | $(0.42) | $(0.37) | $(0.35) |
| Net asset value, end of period (x) | $18.38 | $13.62 | $14.78 | $14.45 | $13.35 |
| Total return (%) (r)(s)(t)(x) | 37.40 | (4.97) | 5.69 | 11.00 | 12.28 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.23 | 1.27 | 1.29 | 1.31 | 1.34 |
| Expenses after expense reductions (f)(h) | 1.00 | 0.99 | 0.99 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.63 | 1.26 | 1.54 | 1.35 | 0.40 |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $3,514 | $2,632 | $2,730 | $2,510 | $1,893 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.82 | $14.97 | $14.64 | $13.51 | $12.40 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.27 | $0.32 | $0.37 | $0.38 | $0.26 |
| Net realized and unrealized gain (loss) | 5.05 | (0.85) | 0.53 | 1.25 | 1.34 |
| Total from investment operations | $5.32 | $(0.53) | $0.90 | $1.63 | $1.60 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.26) | $(0.32) | $(0.36) | $(0.40) | $(0.18) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.46) | $(0.62) | $(0.57) | $(0.50) | $(0.49) |
| Net asset value, end of period (x) | $18.68 | $13.82 | $14.97 | $14.64 | $13.51 |
| Total return (%) (r)(s)(t)(x) | 38.83 | (4.03) | 6.76 | 12.10 | 13.12 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.23 | 0.27 | 0.29 | 0.32 | 0.32 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.66 | 2.17 | 2.55 | 2.59 | 2.01 |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $1,267 | $714 | $843 | $636 | $311 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2035 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.70 | $14.83 | $14.50 | $13.44 | $12.39 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $(0.01) | $0.15 | $0.22 | $0.23 | $0.07 |
| Net realized and unrealized gain (loss) | 5.10 | (0.84) | 0.54 | 1.25 | 1.42 |
| Total from investment operations | $5.09 | $(0.69) | $0.76 | $1.48 | $1.49 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $— | $(0.14) | $(0.22) | $(0.32) | $(0.13) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.20) | $(0.44) | $(0.43) | $(0.42) | $(0.44) |
| Net asset value, end of period (x) | $18.59 | $13.70 | $14.83 | $14.50 | $13.44 |
| Total return (%) (r)(s)(t)(x) | 37.27 | (5.01) | 5.72 | 11.00 | 12.22 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.24 | 1.27 | 1.29 | 1.31 | 1.36 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.05) | 1.00 | 1.55 | 1.61 | 0.57 |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $470 | $1,835 | $2,535 | $1,974 | $664 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.75 | $14.89 | $14.54 | $13.43 | $12.33 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.16 | $0.23 | $0.27 | $0.27 | $0.13 |
| Net realized and unrealized gain (loss) | 5.04 | (0.84) | 0.56 | 1.28 | 1.42 |
| Total from investment operations | $5.20 | $(0.61) | $0.83 | $1.55 | $1.55 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.14) | $(0.23) | $(0.27) | $(0.34) | $(0.14) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.34) | $(0.53) | $(0.48) | $(0.44) | $(0.45) |
| Net asset value, end of period (x) | $18.61 | $13.75 | $14.89 | $14.54 | $13.43 |
| Total return (%) (r)(s)(t)(x) | 38.06 | (4.50) | 6.23 | 11.57 | 12.80 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.74 | 0.77 | 0.79 | 0.81 | 0.86 |
| Expenses after expense reductions (f)(h) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 0.97 | 1.58 | 1.84 | 1.86 | 1.00 |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $20,783 | $26,572 | $32,592 | $32,185 | $20,918 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2035 FUND − continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.80 | $14.96 | $14.63 | $13.50 | $12.37 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.23 | $0.30 | $0.34 | $0.30 | $0.16 |
| Net realized and unrealized gain (loss) | 5.04 | (0.87) | 0.52 | 1.30 | 1.43 |
| Total from investment operations | $5.27 | $(0.57) | $0.86 | $1.60 | $1.59 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.23) | $(0.29) | $(0.32) | $(0.37) | $(0.15) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.43) | $(0.59) | $(0.53) | $(0.47) | $(0.46) |
| Net asset value, end of period (x) | $18.64 | $13.80 | $14.96 | $14.63 | $13.50 |
| Total return (%) (r)(s)(t)(x) | 38.44 | (4.27) | 6.46 | 11.85 | 13.11 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.48 | 0.52 | 0.54 | 0.56 | 0.60 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.40 | 2.00 | 2.31 | 2.10 | 1.23 |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $141,555 | $96,287 | $71,027 | $58,283 | $35,284 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.87 | $15.02 | $14.69 | $13.54 | $12.39 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.25 | $0.33 | $0.38 | $0.38 | $0.19 |
| Net realized and unrealized gain (loss) | 5.09 | (0.86) | 0.52 | 1.26 | 1.45 |
| Total from investment operations | $5.34 | $(0.53) | $0.90 | $1.64 | $1.64 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.25) | $(0.32) | $(0.36) | $(0.39) | $(0.18) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.45) | $(0.62) | $(0.57) | $(0.49) | $(0.49) |
| Net asset value, end of period (x) | $18.76 | $13.87 | $15.02 | $14.69 | $13.54 |
| Total return (%) (r)(s)(t)(x) | 38.82 | (4.01) | 6.73 | 12.11 | 13.46 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.23 | 0.27 | 0.29 | 0.30 | 0.34 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.56 | 2.22 | 2.58 | 2.61 | 1.44 |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $89,097 | $120,415 | $115,939 | $87,528 | $119,254 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2035 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $13.87 | $15.02 | $14.69 | $13.55 | $13.04 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.31 | $0.35 | $0.39 | $0.44 | $0.06 |
| Net realized and unrealized gain (loss) | 5.07 | (0.86) | 0.53 | 1.22 | 0.94 |
| Total from investment operations | $5.38 | $(0.51) | $0.92 | $1.66 | $1.00 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.29) | $(0.34) | $(0.38) | $(0.42) | $(0.18) |
| From net realized gain | (0.20) | (0.30) | (0.21) | (0.10) | (0.31) |
| Total distributions declared to shareholders | $(0.49) | $(0.64) | $(0.59) | $(0.52) | $(0.49) |
| Net asset value, end of period (x) | $18.76 | $13.87 | $15.02 | $14.69 | $13.55 |
| Total return (%) (r)(s)(t)(x) | 39.08 | (3.90) | 6.90 | 12.23 | 7.93(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.09 | 0.12 | 0.15 | 0.16 | 0.27(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 1.86 | 2.35 | 2.67 | 3.03 | 0.63(a) |
| Portfolio turnover | 28 | 13 | 12 | 33 | 43 |
| Net assets at end of period (000 omitted) | $206,449 | $62,093 | $44,655 | $26,567 | $9,531 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2040 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.79 | $16.46 | $16.38 | $15.00 | $14.07 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.21 | $0.30 | $0.35 | $0.31 | $0.15 |
| Net realized and unrealized gain (loss) | 5.86 | (1.02) | 0.57 | 1.61 | 1.72 |
| Total from investment operations | $6.07 | $(0.72) | $0.92 | $1.92 | $1.87 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.22) | $(0.30) | $(0.36) | $(0.36) | $(0.15) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.53) | $(0.95) | $(0.84) | $(0.54) | $(0.94) |
| Net asset value, end of period (x) | $20.33 | $14.79 | $16.46 | $16.38 | $15.00 |
| Total return (%) (r)(s)(t)(x) | 41.38 | (5.08) | 6.45 | 12.86 | 13.76 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.46 | 0.49 | 0.48 | 0.48 | 0.50 |
| Expenses after expense reductions (f)(h) | 0.24 | 0.24 | 0.24 | 0.24 | 0.25 |
| Net investment income (loss) (l) | 1.21 | 1.86 | 2.15 | 1.90 | 1.04 |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $56,524 | $41,909 | $36,747 | $36,354 | $35,093 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.68 | $16.34 | $16.23 | $14.87 | $13.95 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.08 | $0.17 | $0.22 | $0.19 | $0.04 |
| Net realized and unrealized gain (loss) | 5.81 | (1.01) | 0.59 | 1.59 | 1.71 |
| Total from investment operations | $5.89 | $(0.84) | $0.81 | $1.78 | $1.75 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.06) | $(0.17) | $(0.22) | $(0.24) | $(0.04) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.37) | $(0.82) | $(0.70) | $(0.42) | $(0.83) |
| Net asset value, end of period (x) | $20.20 | $14.68 | $16.34 | $16.23 | $14.87 |
| Total return (%) (r)(s)(t)(x) | 40.36 | (5.80) | 5.66 | 12.00 | 12.94 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.21 | 1.24 | 1.23 | 1.23 | 1.25 |
| Expenses after expense reductions (f)(h) | 0.99 | 0.99 | 0.99 | 0.99 | 1.00 |
| Net investment income (loss) (l) | 0.44 | 1.05 | 1.39 | 1.20 | 0.27 |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $3,527 | $3,577 | $4,588 | $4,965 | $4,924 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2040 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.48 | $16.13 | $16.03 | $14.70 | $13.80 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.08 | $0.16 | $0.21 | $0.19 | $0.04 |
| Net realized and unrealized gain (loss) | 5.73 | (0.99) | 0.58 | 1.57 | 1.70 |
| Total from investment operations | $5.81 | $(0.83) | $0.79 | $1.76 | $1.74 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.04) | $(0.17) | $(0.21) | $(0.25) | $(0.05) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.35) | $(0.82) | $(0.69) | $(0.43) | $(0.84) |
| Net asset value, end of period (x) | $19.94 | $14.48 | $16.13 | $16.03 | $14.70 |
| Total return (%) (r)(s)(t)(x) | 40.39 | (5.79) | 5.65 | 11.99 | 12.96 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.22 | 1.24 | 1.23 | 1.23 | 1.25 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 0.99 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.48 | 1.03 | 1.35 | 1.19 | 0.30 |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $8,727 | $9,202 | $10,994 | $11,735 | $11,035 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.91 | $16.57 | $16.47 | $15.08 | $14.17 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.28 | $0.32 | $0.42 | $0.37 | $0.26 |
| Net realized and unrealized gain (loss) | 5.88 | (1.00) | 0.55 | 1.60 | 1.63 |
| Total from investment operations | $6.16 | $(0.68) | $0.97 | $1.97 | $1.89 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.27) | $(0.33) | $(0.39) | $(0.40) | $(0.19) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.58) | $(0.98) | $(0.87) | $(0.58) | $(0.98) |
| Net asset value, end of period (x) | $20.49 | $14.91 | $16.57 | $16.47 | $15.08 |
| Total return (%) (r)(s)(t)(x) | 41.67 | (4.81) | 6.75 | 13.11 | 13.77 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.21 | 0.24 | 0.23 | 0.23 | 0.24 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.57 | 1.92 | 2.55 | 2.30 | 1.78 |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $3,870 | $1,201 | $1,432 | $1,622 | $1,670 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2040 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.61 | $16.27 | $16.16 | $14.82 | $13.87 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.05 | $0.16 | $0.21 | $0.18 | $0.02 |
| Net realized and unrealized gain (loss) | 5.81 | (1.00) | 0.60 | 1.58 | 1.73 |
| Total from investment operations | $5.86 | $(0.84) | $0.81 | $1.76 | $1.75 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.03) | $(0.17) | $(0.22) | $(0.24) | $(0.01) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.34) | $(0.82) | $(0.70) | $(0.42) | $(0.80) |
| Net asset value, end of period (x) | $20.13 | $14.61 | $16.27 | $16.16 | $14.82 |
| Total return (%) (r)(s)(t)(x) | 40.32 | (5.80) | 5.71 | 11.91 | 12.96 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.22 | 1.24 | 1.23 | 1.23 | 1.25 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 0.99 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.29 | 1.01 | 1.32 | 1.16 | 0.17 |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $3,965 | $4,153 | $4,958 | $4,606 | $4,130 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.70 | $16.34 | $16.24 | $14.88 | $13.97 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.16 | $0.24 | $0.31 | $0.27 | $0.11 |
| Net realized and unrealized gain (loss) | 5.82 | (0.99) | 0.57 | 1.59 | 1.71 |
| Total from investment operations | $5.98 | $(0.75) | $0.88 | $1.86 | $1.82 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.16) | $(0.24) | $(0.30) | $(0.32) | $(0.12) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.47) | $(0.89) | $(0.78) | $(0.50) | $(0.91) |
| Net asset value, end of period (x) | $20.21 | $14.70 | $16.34 | $16.24 | $14.88 |
| Total return (%) (r)(s)(t)(x) | 40.98 | (5.30) | 6.23 | 12.55 | 13.46 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.72 | 0.74 | 0.73 | 0.73 | 0.75 |
| Expenses after expense reductions (f)(h) | 0.50 | 0.50 | 0.49 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 0.90 | 1.49 | 1.92 | 1.69 | 0.79 |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $53,097 | $48,086 | $59,429 | $86,042 | $82,965 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2040 FUND − continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.80 | $16.46 | $16.37 | $15.00 | $14.07 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.22 | $0.30 | $0.36 | $0.31 | $0.15 |
| Net realized and unrealized gain (loss) | 5.84 | (1.01) | 0.56 | 1.61 | 1.72 |
| Total from investment operations | $6.06 | $(0.71) | $0.92 | $1.92 | $1.87 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.22) | $(0.30) | $(0.35) | $(0.37) | $(0.15) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.53) | $(0.95) | $(0.83) | $(0.55) | $(0.94) |
| Net asset value, end of period (x) | $20.33 | $14.80 | $16.46 | $16.37 | $15.00 |
| Total return (%) (r)(s)(t)(x) | 41.32 | (5.02) | 6.45 | 12.81 | 13.76 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.46 | 0.49 | 0.48 | 0.48 | 0.50 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.24 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.26 | 1.82 | 2.20 | 1.94 | 1.03 |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $156,544 | $104,521 | $89,830 | $88,577 | $63,409 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.94 | $16.61 | $16.51 | $15.11 | $14.16 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.25 | $0.34 | $0.39 | $0.39 | $0.19 |
| Net realized and unrealized gain (loss) | 5.93 | (1.02) | 0.58 | 1.58 | 1.74 |
| Total from investment operations | $6.18 | $(0.68) | $0.97 | $1.97 | $1.93 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.25) | $(0.34) | $(0.39) | $(0.39) | $(0.19) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.56) | $(0.99) | $(0.87) | $(0.57) | $(0.98) |
| Net asset value, end of period (x) | $20.56 | $14.94 | $16.61 | $16.51 | $15.11 |
| Total return (%) (r)(s)(t)(x) | 41.74 | (4.84) | 6.73 | 13.09 | 14.08 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.22 | 0.24 | 0.23 | 0.23 | 0.25 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.40 | 2.07 | 2.36 | 2.44 | 1.33 |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $105,822 | $144,006 | $143,534 | $145,328 | $174,887 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2040 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $14.94 | $16.61 | $16.51 | $15.12 | $14.91 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.31 | $0.36 | $0.43 | $0.43 | $0.04 |
| Net realized and unrealized gain (loss) | 5.89 | (1.02) | 0.56 | 1.56 | 1.15 |
| Total from investment operations | $6.20 | $(0.66) | $0.99 | $1.99 | $1.19 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.28) | $(0.36) | $(0.41) | $(0.42) | $(0.19) |
| From net realized gain | (0.31) | (0.65) | (0.48) | (0.18) | (0.79) |
| Total distributions declared to shareholders | $(0.59) | $(1.01) | $(0.89) | $(0.60) | $(0.98) |
| Net asset value, end of period (x) | $20.55 | $14.94 | $16.61 | $16.51 | $15.12 |
| Total return (%) (r)(s)(t)(x) | 41.92 | (4.72) | 6.89 | 13.21 | 8.46(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.08 | 0.10 | 0.10 | 0.10 | 0.16(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 1.69 | 2.20 | 2.62 | 2.63 | 0.43(a) |
| Portfolio turnover | 27 | 13 | 17 | 18 | 54 |
| Net assets at end of period (000 omitted) | $221,571 | $77,824 | $75,378 | $49,071 | $25,793 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2045 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.08 | $15.53 | $15.15 | $13.79 | $12.52 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.19 | $0.28 | $0.32 | $0.30 | $0.14 |
| Net realized and unrealized gain (loss) | 5.97 | (1.12) | 0.57 | 1.52 | 1.57 |
| Total from investment operations | $6.16 | $(0.84) | $0.89 | $1.82 | $1.71 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.19) | $(0.27) | $(0.31) | $(0.35) | $(0.14) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.40) | $(0.61) | $(0.51) | $(0.46) | $(0.44) |
| Net asset value, end of period (x) | $19.84 | $14.08 | $15.53 | $15.15 | $13.79 |
| Total return (%) (r)(s)(t)(x) | 44.10 | (5.93) | 6.45 | 13.18 | 13.89 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.51 | 0.57 | 0.60 | 0.62 | 0.69 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.09 | 1.78 | 2.13 | 1.99 | 1.04 |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $18,980 | $11,409 | $8,749 | $7,789 | $6,135 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.00 | $15.43 | $15.03 | $13.70 | $12.44 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.05 | $0.14 | $0.20 | $0.17 | $0.03 |
| Net realized and unrealized gain (loss) | 5.93 | (1.10) | 0.59 | 1.51 | 1.57 |
| Total from investment operations | $5.98 | $(0.96) | $0.79 | $1.68 | $1.60 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.06) | $(0.13) | $(0.19) | $(0.24) | $(0.04) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.27) | $(0.47) | $(0.39) | $(0.35) | $(0.34) |
| Net asset value, end of period (x) | $19.71 | $14.00 | $15.43 | $15.03 | $13.70 |
| Total return (%) (r)(s)(t)(x) | 42.95 | (6.62) | 5.71 | 12.28 | 13.09 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.26 | 1.32 | 1.35 | 1.37 | 1.43 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.30 | 0.89 | 1.31 | 1.15 | 0.24 |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $930 | $724 | $919 | $948 | $746 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2045 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.91 | $15.35 | $14.97 | $13.66 | $12.42 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.05 | $0.16 | $0.20 | $0.19 | $0.03 |
| Net realized and unrealized gain (loss) | 5.90 | (1.11) | 0.58 | 1.48 | 1.56 |
| Total from investment operations | $5.95 | $(0.95) | $0.78 | $1.67 | $1.59 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.03) | $(0.15) | $(0.20) | $(0.25) | $(0.05) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.24) | $(0.49) | $(0.40) | $(0.36) | $(0.35) |
| Net asset value, end of period (x) | $19.62 | $13.91 | $15.35 | $14.97 | $13.66 |
| Total return (%) (r)(s)(t)(x) | 43.01 | (6.60) | 5.70 | 12.24 | 13.03 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.27 | 1.32 | 1.35 | 1.37 | 1.44 |
| Expenses after expense reductions (f)(h) | 0.99 | 0.97 | 0.99 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.30 | 1.02 | 1.37 | 1.28 | 0.26 |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $1,943 | $1,960 | $2,301 | $1,966 | $1,640 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.15 | $15.60 | $15.22 | $13.85 | $12.55 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.24 | $0.31 | $0.36 | $0.33 | $0.25 |
| Net realized and unrealized gain (loss) | 6.00 | (1.12) | 0.57 | 1.53 | 1.51 |
| Total from investment operations | $6.24 | $(0.81) | $0.93 | $1.86 | $1.76 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.24) | $(0.30) | $(0.35) | $(0.38) | $(0.16) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.45) | $(0.64) | $(0.55) | $(0.49) | $(0.46) |
| Net asset value, end of period (x) | $19.94 | $14.15 | $15.60 | $15.22 | $13.85 |
| Total return (%) (r)(s)(t)(x) | 44.43 | (5.72) | 6.75 | 13.42 | 14.34 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.25 | 0.32 | 0.35 | 0.37 | 0.41 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.37 | 2.01 | 2.40 | 2.24 | 1.89 |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $2,145 | $395 | $296 | $161 | $138 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2045 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $13.97 | $15.41 | $15.06 | $13.75 | $12.51 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $(0.04) | $0.15 | $0.23 | $0.17 | $0.03 |
| Net realized and unrealized gain (loss) | 6.02 | (1.11) | 0.55 | 1.52 | 1.58 |
| Total from investment operations | $5.98 | $(0.96) | $0.78 | $1.69 | $1.61 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $— | $(0.14) | $(0.23) | $(0.27) | $(0.07) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.21) | $(0.48) | $(0.43) | $(0.38) | $(0.37) |
| Net asset value, end of period (x) | $19.74 | $13.97 | $15.41 | $15.06 | $13.75 |
| Total return (%) (r)(s)(t)(x) | 42.98 | (6.67) | 5.70 | 12.27 | 13.05 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.28 | 1.32 | 1.35 | 1.37 | 1.45 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.25) | 0.98 | 1.54 | 1.14 | 0.22 |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $552 | $995 | $1,093 | $872 | $463 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.00 | $15.42 | $15.04 | $13.71 | $12.47 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.11 | $0.20 | $0.25 | $0.25 | $0.12 |
| Net realized and unrealized gain (loss) | 5.96 | (1.07) | 0.59 | 1.51 | 1.55 |
| Total from investment operations | $6.07 | $(0.87) | $0.84 | $1.76 | $1.67 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.11) | $(0.21) | $(0.26) | $(0.32) | $(0.13) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.32) | $(0.55) | $(0.46) | $(0.43) | $(0.43) |
| Net asset value, end of period (x) | $19.75 | $14.00 | $15.42 | $15.04 | $13.71 |
| Total return (%) (r)(s)(t)(x) | 43.65 | (6.12) | 6.15 | 12.87 | 13.65 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.77 | 0.82 | 0.85 | 0.87 | 0.95 |
| Expenses after expense reductions (f)(h) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 0.67 | 1.31 | 1.65 | 1.70 | 0.89 |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $15,161 | $17,299 | $21,895 | $20,428 | $10,716 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2045 FUND − continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.07 | $15.52 | $15.14 | $13.78 | $12.52 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.18 | $0.27 | $0.32 | $0.28 | $0.14 |
| Net realized and unrealized gain (loss) | 5.97 | (1.11) | 0.57 | 1.54 | 1.56 |
| Total from investment operations | $6.15 | $(0.84) | $0.89 | $1.82 | $1.70 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.19) | $(0.27) | $(0.31) | $(0.35) | $(0.14) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.40) | $(0.61) | $(0.51) | $(0.46) | $(0.44) |
| Net asset value, end of period (x) | $19.82 | $14.07 | $15.52 | $15.14 | $13.78 |
| Total return (%) (r)(s)(t)(x) | 44.05 | (5.93) | 6.49 | 13.20 | 13.83 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.51 | 0.57 | 0.60 | 0.62 | 0.69 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.08 | 1.77 | 2.10 | 1.87 | 1.06 |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $109,034 | $69,136 | $53,767 | $42,729 | $23,479 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.14 | $15.58 | $15.20 | $13.82 | $12.54 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.21 | $0.32 | $0.35 | $0.36 | $0.17 |
| Net realized and unrealized gain (loss) | 6.02 | (1.12) | 0.57 | 1.50 | 1.57 |
| Total from investment operations | $6.23 | $(0.80) | $0.92 | $1.86 | $1.74 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.22) | $(0.30) | $(0.34) | $(0.37) | $(0.16) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.43) | $(0.64) | $(0.54) | $(0.48) | $(0.46) |
| Net asset value, end of period (x) | $19.94 | $14.14 | $15.58 | $15.20 | $13.82 |
| Total return (%) (r)(s)(t)(x) | 44.39 | (5.67) | 6.73 | 13.47 | 14.18 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.27 | 0.32 | 0.35 | 0.36 | 0.44 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.23 | 2.04 | 2.33 | 2.43 | 1.27 |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $68,489 | $90,453 | $83,824 | $70,628 | $84,597 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2045 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $14.14 | $15.58 | $15.20 | $13.83 | $13.21 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.27 | $0.33 | $0.36 | $0.47 | $0.03 |
| Net realized and unrealized gain (loss) | 5.98 | (1.11) | 0.59 | 1.41 | 1.06 |
| Total from investment operations | $6.25 | $(0.78) | $0.95 | $1.88 | $1.09 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.25) | $(0.32) | $(0.37) | $(0.40) | $(0.17) |
| From net realized gain | (0.21) | (0.34) | (0.20) | (0.11) | (0.30) |
| Total distributions declared to shareholders | $(0.46) | $(0.66) | $(0.57) | $(0.51) | $(0.47) |
| Net asset value, end of period (x) | $19.93 | $14.14 | $15.58 | $15.20 | $13.83 |
| Total return (%) (r)(s)(t)(x) | 44.58 | (5.55) | 6.91 | 13.57 | 8.52(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.11 | 0.17 | 0.21 | 0.23 | 0.36(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 1.56 | 2.14 | 2.42 | 3.11 | 0.39(a) |
| Portfolio turnover | 30 | 8 | 12 | 30 | 45 |
| Net assets at end of period (000 omitted) | $140,992 | $37,856 | $26,219 | $15,910 | $4,351 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2050 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $16.99 | $18.80 | $18.30 | $16.63 | $15.14 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.22 | $0.32 | $0.38 | $0.33 | $0.17 |
| Net realized and unrealized gain (loss) | 7.23 | (1.33) | 0.71 | 1.86 | 1.89 |
| Total from investment operations | $7.45 | $(1.01) | $1.09 | $2.19 | $2.06 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.23) | $(0.32) | $(0.37) | $(0.37) | $(0.16) |
| From net realized gain | (0.23) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.46) | $(0.80) | $(0.59) | $(0.52) | $(0.57) |
| Net asset value, end of period (x) | $23.98 | $16.99 | $18.80 | $18.30 | $16.63 |
| Total return (%) (r)(s)(t)(x) | 44.17 | (5.93) | 6.47 | 13.16 | 13.89 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.51 | 0.57 | 0.57 | 0.58 | 0.65 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.08 | 1.74 | 2.11 | 1.83 | 1.06 |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $22,708 | $14,315 | $12,791 | $12,353 | $11,383 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $16.75 | $18.55 | $18.07 | $16.44 | $14.98 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.06 | $0.18 | $0.25 | $0.20 | $0.04 |
| Net realized and unrealized gain (loss) | 7.11 | (1.32) | 0.70 | 1.83 | 1.88 |
| Total from investment operations | $7.17 | $(1.14) | $0.95 | $2.03 | $1.92 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.07) | $(0.18) | $(0.25) | $(0.25) | $(0.05) |
| From net realized gain | (0.23) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.30) | $(0.66) | $(0.47) | $(0.40) | $(0.46) |
| Net asset value, end of period (x) | $23.62 | $16.75 | $18.55 | $18.07 | $16.44 |
| Total return (%) (r)(s)(t)(x) | 43.04 | (6.61) | 5.67 | 12.36 | 12.99 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.26 | 1.32 | 1.32 | 1.33 | 1.39 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.32 | 0.97 | 1.39 | 1.15 | 0.24 |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $1,727 | $1,359 | $1,630 | $1,270 | $1,048 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2050 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $16.65 | $18.45 | $17.96 | $16.35 | $14.91 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.06 | $0.17 | $0.23 | $0.20 | $0.04 |
| Net realized and unrealized gain (loss) | 7.08 | (1.31) | 0.72 | 1.81 | 1.87 |
| Total from investment operations | $7.14 | $(1.14) | $0.95 | $2.01 | $1.91 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.07) | $(0.18) | $(0.24) | $(0.25) | $(0.06) |
| From net realized gain | (0.23) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.30) | $(0.66) | $(0.46) | $(0.40) | $(0.47) |
| Net asset value, end of period (x) | $23.49 | $16.65 | $18.45 | $17.96 | $16.35 |
| Total return (%) (r)(s)(t)(x) | 43.12 | (6.66) | 5.67 | 12.30 | 13.04 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.26 | 1.32 | 1.32 | 1.33 | 1.39 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.31 | 0.94 | 1.31 | 1.16 | 0.28 |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $3,898 | $3,029 | $3,344 | $2,775 | $2,535 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $16.97 | $18.78 | $18.29 | $16.62 | $15.12 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.28 | $0.41 | $0.50 | $0.41 | $0.30 |
| Net realized and unrealized gain (loss) | 7.21 | (1.37) | 0.62 | 1.83 | 1.81 |
| Total from investment operations | $7.49 | $(0.96) | $1.12 | $2.24 | $2.11 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.28) | $(0.37) | $(0.41) | $(0.42) | $(0.20) |
| From net realized gain | (0.23) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.51) | $(0.85) | $(0.63) | $(0.57) | $(0.61) |
| Net asset value, end of period (x) | $23.95 | $16.97 | $18.78 | $18.29 | $16.62 |
| Total return (%) (r)(s)(t)(x) | 44.49 | (5.71) | 6.70 | 13.47 | 14.21 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.26 | 0.32 | 0.32 | 0.33 | 0.38 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.36 | 2.23 | 2.73 | 2.26 | 1.92 |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $1,033 | $354 | $213 | $566 | $423 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2050 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $16.67 | $18.46 | $17.97 | $16.38 | $14.94 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $(0.04) | $0.16 | $0.25 | $0.21 | $0.04 |
| Net realized and unrealized gain (loss) | 7.20 | (1.30) | 0.69 | 1.82 | 1.88 |
| Total from investment operations | $7.16 | $(1.14) | $0.94 | $2.03 | $1.92 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $— | $(0.17) | $(0.23) | $(0.29) | $(0.07) |
| From net realized gain | (0.24) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.24) | $(0.65) | $(0.45) | $(0.44) | $(0.48) |
| Net asset value, end of period (x) | $23.59 | $16.67 | $18.46 | $17.97 | $16.38 |
| Total return (%) (r)(s)(t)(x) | 43.08 | (6.64) | 5.65 | 12.35 | 13.06 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.28 | 1.32 | 1.32 | 1.33 | 1.40 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.21) | 0.90 | 1.42 | 1.18 | 0.26 |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $695 | $1,184 | $1,322 | $1,052 | $606 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $16.79 | $18.55 | $18.07 | $16.44 | $14.98 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.15 | $0.26 | $0.34 | $0.30 | $0.13 |
| Net realized and unrealized gain (loss) | 7.15 | (1.30) | 0.69 | 1.82 | 1.88 |
| Total from investment operations | $7.30 | $(1.04) | $1.03 | $2.12 | $2.01 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.15) | $(0.24) | $(0.33) | $(0.34) | $(0.14) |
| From net realized gain | (0.24) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.39) | $(0.72) | $(0.55) | $(0.49) | $(0.55) |
| Net asset value, end of period (x) | $23.70 | $16.79 | $18.55 | $18.07 | $16.44 |
| Total return (%) (r)(s)(t)(x) | 43.72 | (6.12) | 6.18 | 12.89 | 13.64 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.77 | 0.82 | 0.82 | 0.83 | 0.90 |
| Expenses after expense reductions (f)(h) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 0.72 | 1.41 | 1.92 | 1.67 | 0.82 |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $28,781 | $26,545 | $28,575 | $46,468 | $33,805 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2050 FUND − continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $16.86 | $18.67 | $18.18 | $16.53 | $15.05 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.22 | $0.33 | $0.38 | $0.34 | $0.16 |
| Net realized and unrealized gain (loss) | 7.17 | (1.33) | 0.70 | 1.84 | 1.89 |
| Total from investment operations | $7.39 | $(1.00) | $1.08 | $2.18 | $2.05 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.23) | $(0.33) | $(0.37) | $(0.38) | $(0.16) |
| From net realized gain | (0.23) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.46) | $(0.81) | $(0.59) | $(0.53) | $(0.57) |
| Net asset value, end of period (x) | $23.79 | $16.86 | $18.67 | $18.18 | $16.53 |
| Total return (%) (r)(s)(t)(x) | 44.16 | (5.96) | 6.48 | 13.19 | 13.91 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.51 | 0.57 | 0.57 | 0.58 | 0.65 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.08 | 1.77 | 2.10 | 1.90 | 1.03 |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $113,346 | $70,610 | $54,561 | $48,180 | $27,276 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $16.97 | $18.77 | $18.28 | $16.60 | $15.11 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.26 | $0.37 | $0.42 | $0.42 | $0.21 |
| Net realized and unrealized gain (loss) | 7.24 | (1.33) | 0.70 | 1.82 | 1.89 |
| Total from investment operations | $7.50 | $(0.96) | $1.12 | $2.24 | $2.10 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.26) | $(0.36) | $(0.41) | $(0.41) | $(0.20) |
| From net realized gain | (0.24) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.50) | $(0.84) | $(0.63) | $(0.56) | $(0.61) |
| Net asset value, end of period (x) | $23.97 | $16.97 | $18.77 | $18.28 | $16.60 |
| Total return (%) (r)(s)(t)(x) | 44.52 | (5.69) | 6.71 | 13.49 | 14.15 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.27 | 0.32 | 0.32 | 0.33 | 0.39 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.28 | 2.01 | 2.30 | 2.35 | 1.30 |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $71,368 | $76,018 | $69,834 | $70,936 | $75,323 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2050 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $16.97 | $18.76 | $18.27 | $16.60 | $15.91 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.32 | $0.39 | $0.44 | $0.51 | $0.04 |
| Net realized and unrealized gain (loss) | 7.20 | (1.31) | 0.71 | 1.75 | 1.26 |
| Total from investment operations | $7.52 | $(0.92) | $1.15 | $2.26 | $1.30 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.30) | $(0.39) | $(0.44) | $(0.44) | $(0.20) |
| From net realized gain | (0.23) | (0.48) | (0.22) | (0.15) | (0.41) |
| Total distributions declared to shareholders | $(0.53) | $(0.87) | $(0.66) | $(0.59) | $(0.61) |
| Net asset value, end of period (x) | $23.96 | $16.97 | $18.76 | $18.27 | $16.60 |
| Total return (%) (r)(s)(t)(x) | 44.70 | (5.52) | 6.89 | 13.60 | 8.46(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.12 | 0.17 | 0.18 | 0.19 | 0.32(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 1.54 | 2.11 | 2.44 | 2.82 | 0.41(a) |
| Portfolio turnover | 24 | 8 | 24 | 20 | 52 |
| Net assets at end of period (000 omitted) | $121,495 | $44,463 | $39,175 | $23,365 | $8,776 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2055 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.47 | $15.93 | $15.45 | $14.00 | $12.61 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.19 | $0.28 | $0.32 | $0.29 | $0.13 |
| Net realized and unrealized gain (loss) | 6.15 | (1.14) | 0.60 | 1.55 | 1.59 |
| Total from investment operations | $6.34 | $(0.86) | $0.92 | $1.84 | $1.72 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.20) | $(0.27) | $(0.31) | $(0.31) | $(0.13) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.39) | $(0.60) | $(0.44) | $(0.39) | $(0.33) |
| Net asset value, end of period (x) | $20.42 | $14.47 | $15.93 | $15.45 | $14.00 |
| Total return (%) (r)(s)(t)(x) | 44.11 | (5.87) | 6.46 | 13.10 | 13.80 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.61 | 0.72 | 0.81 | 0.92 | 1.34 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.09 | 1.78 | 2.08 | 1.91 | 1.01 |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $14,314 | $7,729 | $5,866 | $4,833 | $3,516 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.41 | $15.87 | $15.39 | $13.95 | $12.58 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.05 | $0.15 | $0.21 | $0.18 | $0.04 |
| Net realized and unrealized gain (loss) | 6.13 | (1.14) | 0.60 | 1.55 | 1.57 |
| Total from investment operations | $6.18 | $(0.99) | $0.81 | $1.73 | $1.61 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.07) | $(0.14) | $(0.20) | $(0.21) | $(0.04) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.26) | $(0.47) | $(0.33) | $(0.29) | $(0.24) |
| Net asset value, end of period (x) | $20.33 | $14.41 | $15.87 | $15.39 | $13.95 |
| Total return (%) (r)(s)(t)(x) | 43.06 | (6.61) | 5.65 | 12.36 | 12.94 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.36 | 1.48 | 1.56 | 1.67 | 2.09 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.31 | 0.93 | 1.34 | 1.22 | 0.28 |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $713 | $517 | $605 | $470 | $407 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2055 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.29 | $15.75 | $15.28 | $13.86 | $12.49 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.05 | $0.14 | $0.20 | $0.18 | $0.03 |
| Net realized and unrealized gain (loss) | 6.08 | (1.11) | 0.60 | 1.53 | 1.58 |
| Total from investment operations | $6.13 | $(0.97) | $0.80 | $1.71 | $1.61 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.06) | $(0.16) | $(0.20) | $(0.21) | $(0.04) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.25) | $(0.49) | $(0.33) | $(0.29) | $(0.24) |
| Net asset value, end of period (x) | $20.17 | $14.29 | $15.75 | $15.28 | $13.86 |
| Total return (%) (r)(s)(t)(x) | 43.08 | (6.59) | 5.63 | 12.29 | 12.98 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.36 | 1.48 | 1.56 | 1.67 | 2.08 |
| Expenses after expense reductions (f)(h) | 1.00 | 0.99 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | 0.29 | 0.92 | 1.32 | 1.19 | 0.26 |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $2,585 | $2,126 | $2,179 | $1,789 | $1,284 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.49 | $15.94 | $15.46 | $14.00 | $12.65 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.25 | $0.32 | $0.35 | $0.30 | $0.26 |
| Net realized and unrealized gain (loss) | 6.14 | (1.14) | 0.61 | 1.58 | 1.45 |
| Total from investment operations | $6.39 | $(0.82) | $0.96 | $1.88 | $1.71 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.24) | $(0.30) | $(0.35) | $(0.34) | $(0.16) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.43) | $(0.63) | $(0.48) | $(0.42) | $(0.36) |
| Net asset value, end of period (x) | $20.45 | $14.49 | $15.94 | $15.46 | $14.00 |
| Total return (%) (r)(s)(t)(x) | 44.42 | (5.65) | 6.74 | 13.40 | 13.66 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.35 | 0.48 | 0.56 | 0.67 | 1.09 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.39 | 1.99 | 2.29 | 1.98 | 2.01 |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $434 | $98 | $156 | $114 | $79 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2055 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.30 | $15.76 | $15.32 | $13.92 | $12.63 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $(0.06) | $0.14 | $0.20 | $0.17 | $0.15 |
| Net realized and unrealized gain (loss) | 6.21 | (1.12) | 0.60 | 1.55 | 1.46 |
| Total from investment operations | $6.15 | $(0.98) | $0.80 | $1.72 | $1.61 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $— | $(0.15) | $(0.23) | $(0.24) | $(0.12) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.19) | $(0.48) | $(0.36) | $(0.32) | $(0.32) |
| Net asset value, end of period (x) | $20.26 | $14.30 | $15.76 | $15.32 | $13.92 |
| Total return (%) (r)(s)(t)(x) | 43.16 | (6.60) | 5.65 | 12.31 | 12.93 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.39 | 1.48 | 1.56 | 1.66 | 2.08 |
| Expenses after expense reductions (f)(h) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 |
| Net investment income (loss) (l) | (0.34) | 0.93 | 1.32 | 1.13 | 1.10 |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $663 | $1,597 | $1,523 | $854 | $318 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.39 | $15.84 | $15.36 | $13.94 | $12.57 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.11 | $0.22 | $0.26 | $0.26 | $0.11 |
| Net realized and unrealized gain (loss) | 6.16 | (1.12) | 0.62 | 1.53 | 1.58 |
| Total from investment operations | $6.27 | $(0.90) | $0.88 | $1.79 | $1.69 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.12) | $(0.22) | $(0.27) | $(0.29) | $(0.12) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.31) | $(0.55) | $(0.40) | $(0.37) | $(0.32) |
| Net asset value, end of period (x) | $20.35 | $14.39 | $15.84 | $15.36 | $13.94 |
| Total return (%) (r)(s)(t)(x) | 43.78 | (6.12) | 6.19 | 12.82 | 13.59 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.87 | 0.98 | 1.06 | 1.16 | 1.60 |
| Expenses after expense reductions (f)(h) | 0.50 | 0.50 | 0.50 | 0.50 | 0.50 |
| Net investment income (loss) (l) | 0.64 | 1.39 | 1.73 | 1.73 | 0.85 |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $17,589 | $17,485 | $18,695 | $15,534 | $6,657 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2055 FUND − continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.47 | $15.93 | $15.45 | $14.00 | $12.61 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.19 | $0.27 | $0.32 | $0.29 | $0.14 |
| Net realized and unrealized gain (loss) | 6.15 | (1.13) | 0.60 | 1.55 | 1.58 |
| Total from investment operations | $6.34 | $(0.86) | $0.92 | $1.84 | $1.72 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.20) | $(0.27) | $(0.31) | $(0.31) | $(0.13) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.39) | $(0.60) | $(0.44) | $(0.39) | $(0.33) |
| Net asset value, end of period (x) | $20.42 | $14.47 | $15.93 | $15.45 | $14.00 |
| Total return (%) (r)(s)(t)(x) | 44.10 | (5.88) | 6.46 | 13.14 | 13.83 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.61 | 0.73 | 0.81 | 0.92 | 1.34 |
| Expenses after expense reductions (f)(h) | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 |
| Net investment income (loss) (l) | 1.09 | 1.73 | 2.07 | 1.89 | 1.07 |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $65,613 | $36,674 | $27,658 | $21,438 | $10,285 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17 |
| Net asset value, beginning of period | $14.55 | $16.01 | $15.53 | $14.06 | $12.65 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.22 | $0.32 | $0.36 | $0.37 | $0.17 |
| Net realized and unrealized gain (loss) | 6.21 | (1.14) | 0.60 | 1.52 | 1.60 |
| Total from investment operations | $6.43 | $(0.82) | $0.96 | $1.89 | $1.77 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.23) | $(0.31) | $(0.35) | $(0.34) | $(0.16) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.42) | $(0.64) | $(0.48) | $(0.42) | $(0.36) |
| Net asset value, end of period (x) | $20.56 | $14.55 | $16.01 | $15.53 | $14.06 |
| Total return (%) (r)(s)(t)(x) | 44.49 | (5.67) | 6.71 | 13.42 | 14.14 |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.36 | 0.47 | 0.56 | 0.67 | 1.09 |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 |
| Net investment income (loss) (l) | 1.27 | 2.04 | 2.31 | 2.43 | 1.31 |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $38,374 | $37,665 | $30,137 | $26,747 | $21,882 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2055 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(i) |
| Net asset value, beginning of period | $14.56 | $16.01 | $15.53 | $14.06 | $13.32 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.28 | $0.34 | $0.37 | $0.49 | $0.04 |
| Net realized and unrealized gain (loss) | 6.18 | (1.13) | 0.61 | 1.42 | 1.06 |
| Total from investment operations | $6.46 | $(0.79) | $0.98 | $1.91 | $1.10 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.25) | $(0.33) | $(0.37) | $(0.36) | $(0.16) |
| From net realized gain | (0.19) | (0.33) | (0.13) | (0.08) | (0.20) |
| Total distributions declared to shareholders | $(0.44) | $(0.66) | $(0.50) | $(0.44) | $(0.36) |
| Net asset value, end of period (x) | $20.58 | $14.56 | $16.01 | $15.53 | $14.06 |
| Total return (%) (r)(s)(t)(x) | 44.75 | (5.50) | 6.88 | 13.56 | 8.44(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.21 | 0.33 | 0.42 | 0.52 | 0.95(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 1.54 | 2.16 | 2.40 | 3.15 | 0.44(a) |
| Portfolio turnover | 24 | 11 | 20 | 18 | 45 |
| Net assets at end of period (000 omitted) | $60,705 | $21,065 | $16,579 | $7,695 | $1,726 |
| (a) | Annualized. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (i) | For Class R6, the period is from the class inception, August 29, 2016, through the stated period end. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Financial Highlights − continued
MFS LIFETIME 2060 FUND
The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). 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.
| | Year ended |
| Class A | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.25 | $12.26 | $11.85 | $10.73 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.15 | $0.22 | $0.41 | $0.25 | $0.10 |
| Net realized and unrealized gain (loss) | 4.82 | (0.89) | 0.30 | 1.16 | 0.74 |
| Total from investment operations | $4.97 | $(0.67) | $0.71 | $1.41 | $0.84 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.14) | $(0.21) | $(0.25) | $(0.23) | $(0.11) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.23) | $(0.34) | $(0.30) | $(0.29) | $(0.11) |
| Net asset value, end of period (x) | $15.99 | $11.25 | $12.26 | $11.85 | $10.73 |
| Total return (%) (r)(s)(t)(x) | 44.39 | (5.83) | 6.47 | 13.19 | 8.45(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.08 | 1.84 | 4.01 | 9.75 | 15.07(a) |
| Expenses after expense reductions (f)(h) | 0.24 | 0.22 | 0.20 | 0.16 | 0.12(a) |
| Net investment income (loss) (l) | 1.06 | 1.81 | 3.49 | 2.17 | 2.42(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $5,584 | $2,879 | $1,362 | $306 | $59 |
| | Year ended |
| Class B | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.24 | $12.25 | $11.82 | $10.70 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.04 | $0.12 | $0.17 | $0.14 | $0.07 |
| Net realized and unrealized gain (loss) | 4.80 | (0.89) | 0.48 | 1.19 | 0.73 |
| Total from investment operations | $4.84 | $(0.77) | $0.65 | $1.33 | $0.80 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.04) | $(0.11) | $(0.17) | $(0.15) | $(0.10) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.13) | $(0.24) | $(0.22) | $(0.21) | $(0.10) |
| Net asset value, end of period (x) | $15.95 | $11.24 | $12.25 | $11.82 | $10.70 |
| Total return (%) (r)(s)(t)(x) | 43.16 | (6.53) | 5.78 | 12.39 | 8.08(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.83 | 2.65 | 4.98 | 11.79 | 15.87(a) |
| Expenses after expense reductions (f)(h) | 0.99 | 0.97 | 0.95 | 0.90 | 0.87(a) |
| Net investment income (loss) (l) | 0.33 | 0.99 | 1.44 | 1.26 | 1.76(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $191 | $137 | $149 | $73 | $55 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2060 FUND − continued
| | Year ended |
| Class C | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.18 | $12.21 | $11.81 | $10.70 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.05 | $0.13 | $0.20 | $0.14 | $0.07 |
| Net realized and unrealized gain (loss) | 4.78 | (0.89) | 0.44 | 1.19 | 0.73 |
| Total from investment operations | $4.83 | $(0.76) | $0.64 | $1.33 | $0.80 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.06) | $(0.14) | $(0.19) | $(0.16) | $(0.10) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.15) | $(0.27) | $(0.24) | $(0.22) | $(0.10) |
| Net asset value, end of period (x) | $15.86 | $11.18 | $12.21 | $11.81 | $10.70 |
| Total return (%) (r)(s)(t)(x) | 43.28 | (6.53) | 5.75 | 12.38 | 8.08(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.83 | 2.61 | 4.88 | 11.46 | 15.81(a) |
| Expenses after expense reductions (f)(h) | 0.99 | 0.96 | 0.95 | 0.90 | 0.87(a) |
| Net investment income (loss) (l) | 0.34 | 1.11 | 1.68 | 1.24 | 1.68(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $761 | $432 | $283 | $107 | $60 |
| | Year ended |
| Class I | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.32 | $12.32 | $11.88 | $10.74 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.19 | $0.23 | $0.28 | $0.26 | $0.11 |
| Net realized and unrealized gain (loss) | 4.84 | (0.87) | 0.47 | 1.19 | 0.74 |
| Total from investment operations | $5.03 | $(0.64) | $0.75 | $1.45 | $0.85 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.17) | $(0.23) | $(0.26) | $(0.25) | $(0.11) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.26) | $(0.36) | $(0.31) | $(0.31) | $(0.11) |
| Net asset value, end of period (x) | $16.09 | $11.32 | $12.32 | $11.88 | $10.74 |
| Total return (%) (r)(s)(t)(x) | 44.66 | (5.58) | 6.76 | 13.50 | 8.57(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.82 | 1.60 | 4.04 | 11.01 | 14.88(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 1.33 | 1.86 | 2.37 | 2.23 | 2.76(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $232 | $103 | $66 | $62 | $54 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2060 FUND − continued
| | Year ended |
| Class R1 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.28 | $12.28 | $11.83 | $10.70 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.04 | $0.12 | $0.16 | $0.14 | $0.07 |
| Net realized and unrealized gain (loss) | 4.82 | (0.88) | 0.48 | 1.19 | 0.73 |
| Total from investment operations | $4.86 | $(0.76) | $0.64 | $1.33 | $0.80 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.04) | $(0.11) | $(0.14) | $(0.14) | $(0.10) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.13) | $(0.24) | $(0.19) | $(0.20) | $(0.10) |
| Net asset value, end of period (x) | $16.01 | $11.28 | $12.28 | $11.83 | $10.70 |
| Total return (%) (r)(s)(t)(x) | 43.20 | (6.46) | 5.69 | 12.41 | 8.08(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.83 | 2.65 | 5.04 | 12.02 | 15.88(a) |
| Expenses after expense reductions (f)(h) | 0.99 | 0.97 | 0.95 | 0.90 | 0.87(a) |
| Net investment income (loss) (l) | 0.32 | 0.99 | 1.36 | 1.23 | 1.76(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $86 | $60 | $64 | $61 | $54 |
| | Year ended |
| Class R2 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.25 | $12.25 | $11.84 | $10.72 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.13 | $0.17 | $0.27 | $0.18 | $0.09 |
| Net realized and unrealized gain (loss) | 4.80 | (0.87) | 0.42 | 1.21 | 0.73 |
| Total from investment operations | $4.93 | $(0.70) | $0.69 | $1.39 | $0.82 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.12) | $(0.17) | $(0.23) | $(0.21) | $(0.10) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.21) | $(0.30) | $(0.28) | $(0.27) | $(0.10) |
| Net asset value, end of period (x) | $15.97 | $11.25 | $12.25 | $11.84 | $10.72 |
| Total return (%) (r)(s)(t)(x) | 43.97 | (6.03) | 6.29 | 12.92 | 8.32(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.33 | 2.13 | 4.31 | 10.36 | 15.38(a) |
| Expenses after expense reductions (f)(h) | 0.49 | 0.47 | 0.45 | 0.41 | 0.37(a) |
| Net investment income (loss) (l) | 0.99 | 1.39 | 2.34 | 1.56 | 2.26(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $1,580 | $980 | $797 | $151 | $54 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2060 FUND − continued
| | Year ended |
| Class R3 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.27 | $12.28 | $11.85 | $10.73 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.16 | $0.24 | $0.24 | $0.25 | $0.10 |
| Net realized and unrealized gain (loss) | 4.81 | (0.90) | 0.48 | 1.17 | 0.74 |
| Total from investment operations | $4.97 | $(0.66) | $0.72 | $1.42 | $0.84 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.15) | $(0.22) | $(0.24) | $(0.24) | $(0.11) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.24) | $(0.35) | $(0.29) | $(0.30) | $(0.11) |
| Net asset value, end of period (x) | $16.00 | $11.27 | $12.28 | $11.85 | $10.73 |
| Total return (%) (r)(s)(t)(x) | 44.28 | (5.78) | 6.48 | 13.21 | 8.45(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 1.07 | 1.80 | 4.15 | 9.15 | 14.31(a) |
| Expenses after expense reductions (f)(h) | 0.24 | 0.22 | 0.20 | 0.16 | 0.12(a) |
| Net investment income (loss) (l) | 1.12 | 1.99 | 2.04 | 2.11 | 2.41(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $17,477 | $7,252 | $2,505 | $1,203 | $88 |
| | Year ended |
| Class R4 | 4/30/21 | 4/30/20 | 4/30/19 | 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.31 | $12.31 | $11.88 | $10.74 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.18 | $0.28 | $0.31 | $0.30 | $0.11 |
| Net realized and unrealized gain (loss) | 4.84 | (0.92) | 0.43 | 1.15 | 0.74 |
| Total from investment operations | $5.02 | $(0.64) | $0.74 | $1.45 | $0.85 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.17) | $(0.23) | $(0.26) | $(0.25) | $(0.11) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.26) | $(0.36) | $(0.31) | $(0.31) | $(0.11) |
| Net asset value, end of period (x) | $16.07 | $11.31 | $12.31 | $11.88 | $10.74 |
| Total return (%) (r)(s)(t)(x) | 44.61 | (5.55) | 6.72 | 13.51 | 8.57(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.83 | 1.55 | 3.79 | 8.82 | 14.88(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 1.33 | 2.29 | 2.63 | 2.54 | 2.75(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $8,871 | $4,568 | $1,524 | $356 | $55 |
See Notes to Financial Statements
Financial Highlights − continued
MFS LIFETIME 2060 FUND − continued
| | Year ended |
| Class R6 | 4/30/21 | 4/30/20 | 4/30/19
| 4/30/18 | 4/30/17(c) |
| Net asset value, beginning of period | $11.33 | $12.33 | $11.88 | $10.74 | $10.00 |
| Income (loss) from investment operations | | | | | |
| Net investment income (loss) (d)(l) | $0.21 | $0.27 | $0.29 | $0.25 | $0.11 |
| Net realized and unrealized gain (loss) | 4.85 | (0.90) | 0.48 | 1.20 | 0.74 |
| Total from investment operations | $5.06 | $(0.63) | $0.77 | $1.45 | $0.85 |
| Less distributions declared to shareholders | | | | | |
| From net investment income | $(0.19) | $(0.24) | $(0.27) | $(0.25) | $(0.11) |
| From net realized gain | (0.09) | (0.13) | (0.05) | (0.06) | — |
| Total distributions declared to shareholders | $(0.28) | $(0.37) | $(0.32) | $(0.31) | $(0.11) |
| Net asset value, end of period (x) | $16.11 | $11.33 | $12.33 | $11.88 | $10.74 |
| Total return (%) (r)(s)(t)(x) | 44.87 | (5.50) | 6.95 | 13.51 | 8.57(n) |
| Ratios (%) (to average net assets) and Supplemental data: | | | | | |
| Expenses before expense reductions (f)(h) | 0.69 | 1.48 | 3.80 | 10.10 | 14.87(a) |
| Expenses after expense reductions (f)(h) | 0.00 | 0.00 | 0.00 | 0.00 | 0.00(a) |
| Net investment income (loss) (l) | 1.49 | 2.21 | 2.43 | 2.18 | 2.76(a) |
| Portfolio turnover | 21 | 9 | 34 | 37 | 2(n) |
| Net assets at end of period (000 omitted) | $25,148 | $7,641 | $3,309 | $1,268 | $543 |
| (a) | Annualized. |
| (c) | For the period from the commencement of the fund’s investment operations, December 6, 2016, through the stated period end. |
| (d) | Per share data is based on average shares outstanding. |
| (f) | Ratios do not reflect reductions from fees paid indirectly, if applicable. |
| (h) | In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying affiliated funds in which the fund invests. Accordingly, the expense ratio for the fund reflects only those fees and expenses borne directly by the fund. Because the underlying affiliated funds have varied expense and fee levels and the fund may own different proportions of the underlying affiliated funds at different times, the amount of fees and expenses incurred indirectly by the fund will vary. |
| (l) | The ratios and per share amounts do not include net investment income of the underlying affiliated funds in which the fund invests. |
| (n) | Not annualized. |
| (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
Notes to Financial Statements
(1) Business and Organization
MFS Lifetime Income Fund, MFS Lifetime 2020 Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund, and MFS Lifetime 2060 Fund (the funds) are each a diversified series of MFS Series Trust XII (the trust). The trust is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company.
Each 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 each fund’s Statement of Assets and Liabilities through the date that the financial statements were issued.
Each fund is a “fund of funds”, which invests the majority of its assets in other MFS mutual funds (hereafter referred to as “underlying affiliated funds” or “underlying funds”), which may have different fiscal year ends than the funds. The underlying funds, in turn, may engage in a number of investment techniques and practices, which involve certain risks. Certain underlying funds invest their portfolio in high-yield securities rated below investment grade. Investments in below investment grade quality securities can involve a substantially greater risk of default or can already be in default, and their values can decline significantly. Below investment grade quality securities tend to be more sensitive to adverse news about the issuer, or the market or economy in general, than higher quality debt instruments. Certain underlying funds invest a significant portion of their assets in asset-backed and/or mortgage-backed securities. For these securities, the value of the debt instrument also depends on the credit quality and adequacy of the underlying assets or collateral as well as whether there is a security interest in the underlying assets or collateral. Enforcing rights, if any, against the underlying assets or collateral may be difficult. U.S. Government securities not supported as to the payment of principal or interest by the U.S. Treasury, such as those issued by Fannie Mae, Freddie Mac, and the Federal Home Loan Banks, are subject to greater credit risk than are U.S. Government securities supported by the U.S. Treasury, such as those issued by Ginnie Mae. Certain underlying funds invest in foreign securities, including securities of emerging market issuers. Investments in foreign securities are vulnerable to the effects of changes in the relative values of the local currency and the U.S. dollar and to the effects of changes in each country’s market, economic, industrial, political, regulatory, geopolitical, environmental, public health, and other conditions. Investments in emerging markets can involve additional and greater risks than the risks associated with investments in developed foreign markets. Emerging markets can have less developed markets, greater custody and operational risk, less developed legal, regulatory, and accounting, and auditing systems, and greater political, social, and economic instability than developed markets.
The accounting policies of the underlying funds in which each fund invests are outlined in the underlying funds’ shareholder reports, which are available without charge by calling 1-800-225-2606, at mfs.com and on the Securities and Exchange Commission (SEC) web site at http://www.sec.gov. The underlying funds' shareholder reports are not covered by this report.
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 for certain reference rate-related contract 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. In March 2021, the administrator for LIBOR announced the extension of the publication of the more commonly used U.S. dollar LIBOR settings to the end of June 2023. Management is still evaluating the impact of ASU 2020-04 on each fund's accounting for investments, derivatives, debt and other contracts that will undergo reference rate-related modifications as a result of the reference rate reform.
Investment Valuations — Open-end investment companies (underlying funds) are generally valued at their net asset value per share. The investments of underlying funds managed by the adviser are valued as described below. For purposes of this policy disclosure, “fund” also refers to the underlying funds in which the fund-of-funds invests.
Equity securities, including restricted equity securities and equity securities sold short, 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. Equity securities sold short, for which there were no sales reported that day, are generally valued at the last quoted daily ask quotation on their primary market or exchange as provided by a third-party pricing service. Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price on their primary exchange as provided by a third-party pricing service. Exchange-traded options for which there were no sales reported that day are generally valued at the last daily bid quotation on their primary exchange as provided by a third-party pricing
Notes to Financial Statements - continued
service. For put options, the position may be valued at the last daily ask quotation if there are no trades reported during the day. Options not traded on an exchange are generally valued at a broker/dealer bid quotation. Foreign currency options are generally valued at valuations provided by a third-party pricing service. Futures contracts are generally valued at last posted settlement price on their primary exchange as provided by a third-party pricing service. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation on their primary exchange as provided by a third-party pricing service. Forward foreign currency exchange contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates provided by a third-party pricing service for proximate time periods. Swap agreements are generally valued using valuations provided by a third-party pricing service, which for cleared swaps includes an evaluation of any trading activity at the clearinghouses. Open-end investment companies are generally valued at net asset value per share. Securities and other assets, including commodity-linked structured notes, 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 each 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. Each 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 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 April 30, 2021 in valuing each fund's assets or liabilities:
| | Level 1 | Level 2 | Level 3 | Total |
| MFS Lifetime Income Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $695,515,352 | $— | $— | $695,515,352 |
| MFS Lifetime 2020 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $363,131,581 | $— | $— | $363,131,581 |
| MFS Lifetime 2025 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $484,622,422 | $— | $— | $484,622,422 |
Notes to Financial Statements - continued
| | Level 1 | Level 2 | Level 3 | Total |
| MFS Lifetime 2030 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $793,072,617 | $— | $— | $793,072,617 |
| MFS Lifetime 2035 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $492,597,254 | $— | $— | $492,597,254 |
| MFS Lifetime 2040 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $613,750,650 | $— | $— | $613,750,650 |
| MFS Lifetime 2045 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $358,314,919 | $— | $— | $358,314,919 |
| MFS Lifetime 2050 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $365,145,035 | $— | $— | $365,145,035 |
| MFS Lifetime 2055 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $201,031,508 | $— | $— | $201,031,508 |
| MFS Lifetime 2060 Fund | | | | |
| Financial Instruments | | | | |
| Mutual Funds | $59,962,240 | $— | $— | $59,962,240 |
For further information regarding security characteristics, see the Portfolio of Investments. Please refer to the underlying funds’ shareholder reports for further information regarding the levels used in valuing the underlying funds’ assets or liabilities.
Derivatives — Each fund does not invest in derivatives directly. Each fund does invest in underlying funds that may use derivatives primarily to increase or decrease exposure to a particular market or segment of the market, or security, to increase or decrease interest rate or currency exposure, or as alternatives to direct investments. Derivatives are used for hedging or non-hedging purposes. While hedging can reduce or eliminate losses, it can also reduce or eliminate gains. When the underlying funds use derivatives as an investment to increase market exposure, or for hedging purposes, gains and losses from derivative instruments may be substantially greater than the derivative’s original cost.
Indemnifications — Under each 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 each fund. Additionally, in the normal course of business, each fund enters into agreements with service providers that may contain indemnification clauses. Each fund's maximum exposure under these agreements is unknown as this would involve future claims that may be made against each fund that have not yet occurred.
Investment Transactions and Income — Investment transactions are recorded on the trade date. Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. Distributions of income and capital gains from the underlying funds are recorded on the ex-dividend date. Recognition of net investment income by each fund is affected by the timing of the declaration of distributions by the underlying funds in which each fund invests. In determining the net gain or loss on securities sold, the cost of securities is determined on the identified cost basis.
Each fund and/or the underlying funds may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statements 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 Statements of Operations.
Notes to Financial Statements - continued
Tax Matters and Distributions — Each 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. Each 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 each 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.
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.
Book/tax differences primarily relate to wash sale loss deferrals and treating a portion of the proceeds from redemptions as a distribution for tax purposes.
The tax character of distributions declared to shareholders for the last two fiscal years is as follows:
| Year ended 4/30/21 | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Ordinary income (including any short-term capital gains) | $14,200,058 | $8,278,306 | $9,900,724 | $12,288,450 | $7,093,260 |
| Long-term capital gains | 5,492,453 | 6,447,219 | 2,518,091 | 14,580,345 | 4,007,054 |
| Total distributions | $19,692,511 | $14,725,525 | $12,418,815 | $26,868,795 | $11,100,314 |
| Year ended 4/30/21 | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Ordinary income (including any short-term capital gains) | $6,720,305 | $4,094,061 | $3,811,033 | $2,105,126 | $542,646 |
| Long-term capital gains | 8,797,683 | 3,132,026 | 3,263,863 | 1,563,035 | 235,017 |
| Total distributions | $15,517,988 | $7,226,087 | $7,074,896 | $3,668,161 | $777,663 |
| Year ended 4/30/20 | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Ordinary income (including any short-term capital gains) | $15,159,683 | $9,562,168 | $7,461,279 | $14,729,384 | $6,728,265 |
| Long-term capital gains | 5,877,493 | 6,800,144 | 4,100,016 | 17,800,074 | 6,210,105 |
| Total distributions | $21,037,176 | $16,362,312 | $11,561,295 | $32,529,458 | $12,938,370 |
| Year ended 4/30/20 | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Ordinary income (including any short-term capital gains) | $10,530,309 | $4,289,230 | $4,501,307 | $2,125,062 | $354,104 |
| Long-term capital gains | 15,037,104 | 4,912,070 | 5,745,059 | 2,432,029 | 179,506 |
| Total distributions | $25,567,413 | $9,201,300 | $10,246,366 | $4,557,091 | $533,610 |
The federal tax cost and the tax basis components of distributable earnings were as follows:
| As of 4/30/21 | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Cost of investments | $588,891,151 | $305,836,175 | $406,123,236 | $586,965,375 | $364,830,196 |
| Gross appreciation | 106,624,201 | 57,295,406 | 78,499,186 | 206,122,309 | 127,838,854 |
| Gross depreciation | — | — | — | (15,067) | (71,796) |
| Net unrealized appreciation (depreciation) | $106,624,201 | $57,295,406 | $78,499,186 | $206,107,242 | $127,767,058 |
| Undistributed ordinary income | 666,474 | 1,922,106 | 3,586,370 | 3,623,588 | 1,416,369 |
| Undistributed long-term capital gain | 7,122,603 | 7,268,037 | 4,589,304 | 14,819,311 | 6,197,582 |
| Other temporary differences | (910,034) | — | — | — | — |
| Total distributable earnings (loss) | $113,503,244 | $66,485,549 | $86,674,860 | $224,550,141 | $135,381,009 |
Notes to Financial Statements - continued
| As of 4/30/21 | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Cost of investments | $398,905,918 | $257,043,188 | $252,692,010 | $148,970,613 | $48,154,432 |
| Gross appreciation | 214,849,330 | 101,294,019 | 112,453,025 | 52,060,895 | 11,807,808 |
| Gross depreciation | (4,598) | (22,288) | — | — | — |
| Net unrealized appreciation (depreciation) | $214,844,732 | $101,271,731 | $112,453,025 | $52,060,895 | $11,807,808 |
| Undistributed ordinary income | 560,843 | 913,460 | 906,128 | 389,323 | 48,957 |
| Undistributed long-term capital gain | 9,263,405 | 4,542,592 | 4,498,889 | 2,388,006 | 597,464 |
| Total distributable earnings (loss) | $224,668,980 | $106,727,783 | $117,858,042 | $54,838,224 | $12,454,229 |
Multiple Classes of Shares of Beneficial Interest — Each fund offers multiple classes of shares, which differ in their respective distribution, service, and program manager fees. For the MFS Lifetime Income Fund, income and common expenses are allocated to shareholders based on the value of settled shares outstanding of each class. For the MFS Lifetime Income Fund, realized and unrealized gain (loss) are allocated to shareholders based on the daily net assets of each class. For all other funds, 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 C shares will convert to Class A shares approximately eight years after purchase. Class 529B and Class 529C shares will convert to Class 529A shares approximately eight years after purchase. Each fund’s distributions declared to shareholders as reported in the Statements of Changes in Net Assets are presented by class as follows:
| | MFS Lifetime
Income Fund | | MFS Lifetime
2020 Fund | | MFS Lifetime
2025 Fund |
| | Year Ended
4/30/21 | | Year Ended
4/30/20 | | Year Ended
4/30/21 | | Year Ended
4/30/20 | | Year Ended
4/30/21 | | Year Ended
4/30/20 |
| Class A | $4,440,952 | | $4,407,821 | | $1,728,511 | | $1,999,361 | | $715,288 | | $777,253 |
| Class B | 107,790 | | 218,127 | | 62,858 | | 117,080 | | 25,518 | | 47,836 |
| Class C | 1,988,334 | | 3,022,560 | | 177,876 | | 459,121 | | 81,093 | | 107,535 |
| Class I | 1,395,428 | | 1,339,749 | | 164,610 | | 100,576 | | 82,251 | | 56,795 |
| Class R1 | 43,668 | | 81,286 | | 50,050 | | 134,890 | | 3,842 | | 51,474 |
| Class R2 | 344,006 | | 542,189 | | 1,193,361 | | 1,765,644 | | 537,269 | | 891,461 |
| Class R3 | 2,294,730 | | 2,427,903 | | 3,382,396 | | 4,245,484 | | 2,922,888 | | 3,272,003 |
| Class R4 | 1,028,013 | | 1,747,049 | | 2,154,076 | | 4,064,720 | | 2,227,777 | | 4,107,186 |
| Class R6 | 2,570,522 | | 1,463,758 | | 5,811,787 | | 3,475,436 | | 5,822,889 | | 2,249,752 |
| Class 529A | 4,657,038 | | 4,597,821 | | — | | — | | — | | — |
| Class 529B | 114,498 | | 140,761 | | — | | — | | — | | — |
| Class 529C | 707,532 | | 1,048,152 | | — | | — | | — | | — |
| Total | $19,692,511 | | $21,037,176 | | $14,725,525 | | $16,362,312 | | $12,418,815 | | $11,561,295 |
| | MFS Lifetime
2030 Fund | | MFS Lifetime
2035 Fund | | MFS Lifetime
2040 Fund |
| | Year Ended
4/30/21 | | Year Ended
4/30/20 | | Year Ended
4/30/21 | | Year Ended
4/30/20 | | Year Ended
4/30/21 | | Year Ended
4/30/20 |
| Class A | $2,792,471 | | $3,607,326 | | $655,847 | | $709,204 | | $1,448,809 | | $2,423,402 |
| Class B | 185,248 | | 344,130 | | 28,814 | | 45,965 | | 70,942 | | 209,405 |
| Class C | 364,875 | | 659,315 | | 56,624 | | 96,504 | | 163,716 | | 510,136 |
| Class I | 180,296 | | 127,203 | | 27,954 | | 36,169 | | 90,494 | | 71,232 |
| Class R1 | 139,602 | | 379,131 | | 4,854 | | 54,932 | | 69,952 | | 226,033 |
| Class R2 | 1,956,246 | | 3,593,363 | | 431,793 | | 987,675 | | 1,240,248 | | 2,844,840 |
| Class R3 | 6,849,556 | | 8,333,046 | | 3,090,755 | | 3,552,699 | | 4,071,997 | | 5,824,292 |
| Class R4 | 4,423,985 | | 9,167,036 | | 2,078,985 | | 5,061,792 | | 2,804,411 | | 8,910,957 |
| Class R6 | 9,976,516 | | 6,318,908 | | 4,724,688 | | 2,393,430 | | 5,557,419 | | 4,547,116 |
| Total | $26,868,795 | | $32,529,458 | | $11,100,314 | | $12,938,370 | | $15,517,988 | | $25,567,413 |
Notes to Financial Statements - continued
| | MFS Lifetime
2045 Fund | | MFS Lifetime
2050 Fund | | MFS Lifetime
2055 Fund |
| | Year Ended
4/30/21 | | Year Ended
4/30/20 | | Year Ended
4/30/21 | | Year Ended
4/30/20 | | Year Ended
4/30/21 | | Year Ended
4/30/20 |
| Class A | $372,428 | | $428,168 | | $422,477 | | $617,761 | | $251,988 | | $273,957 |
| Class B | 13,179 | | 24,535 | | 23,417 | | 59,161 | | 8,997 | | 17,232 |
| Class C | 25,637 | | 71,451 | | 52,386 | | 116,858 | | 31,625 | | 68,852 |
| Class I | 36,305 | | 15,774 | | 17,631 | | 15,361 | | 6,828 | | 4,553 |
| Class R1 | 5,546 | | 34,430 | | 6,487 | | 42,823 | | 6,086 | | 46,392 |
| Class R2 | 278,472 | | 654,420 | | 482,437 | | 1,074,074 | | 267,226 | | 635,025 |
| Class R3 | 2,157,912 | | 2,619,895 | | 2,127,815 | | 2,897,038 | | 1,167,617 | | 1,249,916 |
| Class R4 | 1,480,617 | | 3,908,511 | | 1,465,957 | | 3,480,585 | | 763,015 | | 1,459,561 |
| Class R6 | 2,855,991 | | 1,444,116 | | 2,476,289 | | 1,942,705 | | 1,164,779 | | 801,603 |
| Total | $7,226,087 | | $9,201,300 | | $7,074,896 | | $10,246,366 | | $3,668,161 | | $4,557,091 |
| | MFS Lifetime
2060 Fund |
| | Year Ended
4/30/21 | | Year Ended
4/30/20 |
| Class A | $67,510 | | $55,465 |
| Class B | 1,543 | | 2,927 |
| Class C | 6,317 | | 9,126 |
| Class I | 3,010 | | 2,134 |
| Class R1 | 686 | | 1,250 |
| Class R2 | 23,658 | | 22,290 |
| Class R3 | 221,980 | | 169,401 |
| Class R4 | 115,208 | | 104,930 |
| Class R6 | 337,751 | | 166,087 |
| Total | $777,663 | | $533,610 |
(3) Transactions with Affiliates
Investment Adviser — Each fund has an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the funds. MFS receives no compensation under this agreement; however MFS receives management fees from the underlying MFS funds.
The investment adviser has agreed in writing to pay all of each fund’s operating expenses, excluding distribution and service fees, program manager fees, interest, taxes, extraordinary expenses, brokerage and transaction costs and investment-related expenses including fees and expenses associated with investments in investment companies and other similar investment vehicles (“Other Expenses”). For the year ended April 30, 2021, this reduction amounted to the following for each fund and is included in the reduction of total expenses in the Statements of Operations:
MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| $1,255,521 | $650,371 | $709,669 | $1,075,340 | $735,305 | $892,977 | $627,093 | $658,463 | $521,626 | $315,462 |
For Class R6 shares, the investment adviser has agreed to bear each fund's expenses, or make payment to such fund, such that the “Other Expenses” of the class do not exceed (0.10)% annually of average daily net assets for the MFS Lifetime Income Fund and (0.14)% annually of average daily net assets for all other funds. These written agreements will continue until modified by the funds’ Board of Trustees, but such agreements will continue at least until August 31, 2021. Payments made to certain classes of the funds to further reduce “Other Expenses” below 0.00% annually of average daily net assets are included in “Excess expense reimbursement from investment adviser” in the Statements of Operations.
In addition to the fees and expenses which each fund bears directly, each fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which each fund invests. Accordingly, the expense ratio for each fund reflects only those fees and expenses borne directly by each fund.
Notes to Financial Statements - continued
Distributor — MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, received the following amounts for the year ended April 30, 2021, as its portion of the initial sales charge on sales of Class A and Class 529A shares of each fund:
| | Class A | Class 529A |
| MFS Lifetime Income Fund | $9,750 | $10,179 |
| MFS Lifetime 2020 Fund | 7,488 | — |
| MFS Lifetime 2025 Fund | 13,471 | — |
| MFS Lifetime 2030 Fund | 22,918 | — |
| MFS Lifetime 2035 Fund | 13,863 | — |
| MFS Lifetime 2040 Fund | 22,118 | — |
| MFS Lifetime 2045 Fund | 15,656 | — |
| MFS Lifetime 2050 Fund | 17,027 | — |
| MFS Lifetime 2055 Fund | 15,415 | — |
| MFS Lifetime 2060 Fund | 11,630 | — |
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.
Each fund's distribution plan provides that each 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.
Distribution Plan Fee Table:
| | Class A |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | — | 0.25% | 0.25% | 0.25% | $359,797 |
| MFS Lifetime 2020 Fund | — | 0.25% | 0.25% | 0.25% | 108,545 |
| MFS Lifetime 2025 Fund | — | 0.25% | 0.25% | 0.25% | 68,957 |
| MFS Lifetime 2030 Fund | — | 0.25% | 0.25% | 0.25% | 186,510 |
| MFS Lifetime 2035 Fund | — | 0.25% | 0.25% | 0.25% | 62,421 |
| MFS Lifetime 2040 Fund | — | 0.25% | 0.25% | 0.25% | 123,288 |
| MFS Lifetime 2045 Fund | — | 0.25% | 0.25% | 0.25% | 38,183 |
| MFS Lifetime 2050 Fund | — | 0.25% | 0.25% | 0.25% | 46,340 |
| MFS Lifetime 2055 Fund | — | 0.25% | 0.25% | 0.25% | 27,343 |
| MFS Lifetime 2060 Fund | — | 0.25% | 0.25% | 0.25% | 10,264 |
| | Class B |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $48,487 |
| MFS Lifetime 2020 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 22,912 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 15,461 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 64,744 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 15,708 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 36,624 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 8,352 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 15,634 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 6,130 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 1,646 |
Notes to Financial Statements - continued
| | Class C |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $931,656 |
| MFS Lifetime 2020 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 83,187 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 42,900 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 136,596 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 30,593 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 92,654 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 0.99% | 19,327 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 35,702 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 22,547 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 5,848 |
| | Class R1 |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 1.00% | $21,084 |
| MFS Lifetime 2020 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 25,460 |
| MFS Lifetime 2025 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 14,495 |
| MFS Lifetime 2030 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 70,411 |
| MFS Lifetime 2035 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 14,515 |
| MFS Lifetime 2040 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 44,680 |
| MFS Lifetime 2045 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 9,120 |
| MFS Lifetime 2050 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 10,867 |
| MFS Lifetime 2055 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 14,069 |
| MFS Lifetime 2060 Fund | 0.75% | 0.25% | 1.00% | 1.00% | 729 |
| | Class R2 |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | 0.25% | 0.25% | 0.50% | 0.50% | $65,277 |
| MFS Lifetime 2020 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 175,764 |
| MFS Lifetime 2025 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 127,452 |
| MFS Lifetime 2030 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 322,974 |
| MFS Lifetime 2035 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 125,256 |
| MFS Lifetime 2040 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 258,660 |
| MFS Lifetime 2045 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 83,796 |
| MFS Lifetime 2050 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 138,713 |
| MFS Lifetime 2055 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 89,526 |
| MFS Lifetime 2060 Fund | 0.25% | 0.25% | 0.50% | 0.50% | 6,812 |
| | Class R3 |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | — | 0.25% | 0.25% | 0.25% | $187,149 |
| MFS Lifetime 2020 Fund | — | 0.25% | 0.25% | 0.25% | 221,433 |
| MFS Lifetime 2025 Fund | — | 0.25% | 0.25% | 0.25% | 268,150 |
| MFS Lifetime 2030 Fund | — | 0.25% | 0.25% | 0.25% | 452,922 |
| MFS Lifetime 2035 Fund | — | 0.25% | 0.25% | 0.25% | 295,458 |
| MFS Lifetime 2040 Fund | — | 0.25% | 0.25% | 0.25% | 333,280 |
| MFS Lifetime 2045 Fund | — | 0.25% | 0.25% | 0.25% | 225,407 |
| MFS Lifetime 2050 Fund | — | 0.25% | 0.25% | 0.25% | 229,833 |
| MFS Lifetime 2055 Fund | — | 0.25% | 0.25% | 0.25% | 128,275 |
| MFS Lifetime 2060 Fund | — | 0.25% | 0.25% | 0.25% | 29,912 |
Notes to Financial Statements - continued
| | Class 529A |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | — | 0.25% | 0.25% | 0.24% | $358,834 |
| | Class 529B |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 0.56% | $24,310 |
| | Class 529C |
| | Distribution
Fee Rate (d) | Service
Fee Rate (d) | Total
Distribution
Plan (d) | Annual
Effective
Rate (e) | Distribution
and Service
Fee |
| MFS Lifetime Income Fund | 0.75% | 0.25% | 1.00% | 0.99% | $308,329 |
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Total Distribution and Service Fees | $2,304,923 | $637,301 | $537,415 | $1,234,157 | $543,951 |
| | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Total Distribution and Service Fees | $889,186 | $384,185 | $477,089 | $287,890 | $55,211 |
| (d) | In accordance with the distribution plan for certain classes, each 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 April 30, 2021 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 April 30, 2021, these rebates amounted to the following and are included in the reduction of total expenses in the Statements of Operations: |
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Class A | $1,646 | $779 | $1,055 | $1,490 | $291 |
| Class B | 10 | 18 | 41 | 103 | — |
| Class C | 238 | 18 | 28 | 67 | 52 |
| Class R2 | 175 | 62 | — | 461 | — |
| Class R3 | 3 | 9 | 2 | 17 | 92 |
| Class 529A | 19,647 | N/A | N/A | N/A | N/A |
| Class 529B | 485 | N/A | N/A | N/A | N/A |
| Class 529C | 1,717 | N/A | N/A | N/A | N/A |
| | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Class A | $967 | $80 | $149 | $69 | $5 |
| Class B | 79 | 1 | 7 | — | — |
| Class C | 96 | 144 | 44 | 50 | 9 |
| Class R2 | 82 | — | 366 | — | — |
| Class R3 | 300 | 1 | 277 | 28 | — |
For the MFS Lifetime Income Fund, for the period from October 1, 2020 through April 30, 2021, 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.
Notes to Financial Statements - continued
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 April 30, 2021, were as follows:
| CDSC Imposed | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Class A | $7,905 | $341 | $183 | $718 | $195 |
| Class B | 3,584 | 2,658 | 598 | 3,159 | 2,290 |
| Class C | 4,191 | 432 | 591 | 835 | 681 |
| Class 529B | 320 | N/A | N/A | N/A | N/A |
| Class 529C | 568 | N/A | N/A | N/A | N/A |
| CDSC Imposed | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Class A | $513 | $416 | $572 | $313 | $420 |
| Class B | 2,084 | 814 | 1,057 | 346 | — |
| Class C | 541 | 331 | 635 | 388 | 281 |
The MFS Lifetime Income 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 MFS Lifetime Income 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 MFS Lifetime Income Fund for the year ended April 30, 2021, were as follows:
| | Fee |
| Class 529A | $71,767 |
| Class 529B | 2,125 |
| Class 529C | 15,416 |
| Total Program Manager Fees | $89,308 |
Shareholder Servicing Agent — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from each fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of each fund as determined periodically under the supervision of the funds’ Board of Trustees. For the year ended April 30, 2021, each fund paid the following fee, which equated to the following annual percentage of each fund’s average daily net assets:
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Expenses paid | $234,952 | $27,840 | $25,617 | $51,906 | $31,039 |
| Percentage of average daily net assets | 0.0356% | 0.0077% | 0.0059% | 0.0074% | 0.0075% |
| | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Expenses paid | $47,720 | $30,249 | $37,052 | $36,332 | $13,689 |
| Percentage of average daily net assets | 0.0093% | 0.0103% | 0.0124% | 0.0224% | 0.0335% |
MFSC also receives reimbursement from each 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 April 30, 2021, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to the following:
MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| $591,132 | $351,604 | $407,997 | $703,207 | $424,394 | $548,552 | $329,976 | $356,017 | $227,070 | $60,937 |
Notes to Financial Statements - continued
Administrator – MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to each fund. Under an administrative services agreement, each fund reimburses MFS the costs incurred to provide these services. Each fund pays an annual fixed amount of $17,500. The administrative services fee incurred for the year ended April 30, 2021 was equivalent to the following annual effective rates of each fund's average daily net assets:
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Percentage of average daily net assets | 0.0027% | 0.0048% | 0.0040% | 0.0025% | 0.0042% |
| | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Percentage of average daily net assets | 0.0034% | 0.0060% | 0.0058% | 0.0108% | 0.0429% |
Trustees’ and Officers’ Compensation — Each fund pays compensation to independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. Each fund does not pay compensation directly to Trustees or officers of each fund who are also officers of the investment adviser, all of whom receive remuneration from MFS for their services to each fund. Certain officers and Trustees of each fund are officers or directors of MFS, MFD, and MFSC.
Other — Each 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.
At April 30, 2021, MFS held 100% of the outstanding shares of Class R1 of the MFS Lifetime 2060 Fund.
(4) Portfolio Securities
For the year ended April 30, 2021, purchases and sales of shares of underlying funds, excluding the MFS Institutional Money Market Portfolio, aggregated to the following:
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Purchases | $83,764,949 | $106,436,914 | $182,550,191 | $204,726,107 | $141,678,511 |
| Sales | $79,655,117 | $119,943,987 | $105,292,319 | $189,477,443 | $113,827,659 |
| | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Purchases | $140,824,883 | $109,226,569 | $89,352,665 | $56,474,989 | $29,920,177 |
| Sales | $138,260,415 | $86,892,264 | $70,135,899 | $39,208,133 | $8,620,435 |
Notes to Financial Statements - continued
(5) Shares of Beneficial Interest
Each 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:
| | MFS Lifetime Income Fund | | MFS Lifetime 2020 Fund |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares sold | | | | | | | | | | | |
| Class A | 3,636,158 | $48,469,993 | | 3,266,456 | $41,112,670 | | 701,173 | $9,662,663 | | 551,418 | $7,202,734 |
| Class B | 19,461 | 262,138 | | 13,621 | 171,648 | | 12,251 | 168,657 | | 8,002 | 106,008 |
| Class C | 577,844 | 7,662,531 | | 695,255 | 8,686,803 | | 67,465 | 909,461 | | 68,106 | 879,761 |
| Class I | 1,066,700 | 14,171,151 | | 566,902 | 7,083,823 | | 169,971 | 2,293,150 | | 55,186 | 700,017 |
| Class R1 | 26,121 | 346,607 | | 55,361 | 689,078 | | 34,272 | 463,292 | | 97,071 | 1,270,011 |
| Class R2 | 231,204 | 3,040,908 | | 424,928 | 5,356,077 | | 667,514 | 9,094,252 | | 796,150 | 10,422,891 |
| Class R3 | 1,624,394 | 21,441,159 | | 2,631,438 | 33,012,419 | | 2,157,321 | 29,453,146 | | 2,524,929 | 33,310,873 |
| Class R4 | 454,730 | 6,046,824 | | 601,664 | 7,607,361 | | 669,411 | 9,152,737 | | 1,230,841 | 16,285,674 |
| Class R6 | 4,258,235 | 55,728,831 | | 1,493,085 | 18,879,867 | | 7,448,955 | 101,625,866 | | 1,777,228 | 23,536,474 |
| Class 529A | 8,110,431 | 88,375,981 | | 7,163,201 | 73,349,435 | | — | — | | — | — |
| Class 529B | 161,581 | 1,765,607 | | 294,372 | 3,015,190 | | — | — | | — | — |
| Class 529C | 1,742,326 | 18,884,800 | | 1,806,166 | 18,556,752 | | — | — | | — | — |
| | 21,909,185 | $266,196,530 | | 19,012,449 | $217,521,123 | | 11,928,333 | $162,823,224 | | 7,108,931 | $93,714,443 |
Shares issued to shareholders in
reinvestment of distributions | | | | | | | | | | | |
| Class A | 318,893 | $4,280,753 | | 340,931 | $4,318,717 | | 116,164 | $1,600,746 | | 145,572 | $1,909,905 |
| Class B | 7,819 | 104,999 | | 16,816 | 213,554 | | 4,394 | 60,503 | | 8,724 | 114,198 |
| Class C | 146,646 | 1,969,078 | | 233,822 | 2,968,147 | | 12,992 | 176,429 | | 31,284 | 402,623 |
| Class I | 87,998 | 1,181,508 | | 87,698 | 1,110,727 | | 10,868 | 150,842 | | 7,044 | 93,047 |
| Class R1 | 3,246 | 43,609 | | 6,379 | 81,061 | | 3,614 | 50,050 | | 10,289 | 134,890 |
| Class R2 | 24,075 | 322,382 | | 39,037 | 495,011 | | 84,987 | 1,165,168 | | 127,355 | 1,661,981 |
| Class R3 | 170,980 | 2,294,119 | | 191,514 | 2,426,503 | | 245,457 | 3,382,396 | | 323,589 | 4,245,484 |
| Class R4 | 75,073 | 1,004,029 | | 137,906 | 1,745,726 | | 155,190 | 2,154,040 | | 307,700 | 4,064,720 |
| Class R6 | 176,635 | 2,380,343 | | 102,113 | 1,295,716 | | 402,613 | 5,580,218 | | 240,738 | 3,175,331 |
| Class 529A | 414,483 | 4,539,550 | | 440,968 | 4,570,456 | | — | — | | — | — |
| Class 529B | 10,303 | 113,199 | | 13,493 | 140,127 | | — | — | | — | — |
| Class 529C | 62,718 | 687,706 | | 100,370 | 1,042,074 | | — | — | | — | — |
| | 1,498,869 | $18,921,275 | | 1,711,047 | $20,407,819 | | 1,036,279 | $14,320,392 | | 1,202,295 | $15,802,179 |
| Shares reacquired | | | | | | | | | | | |
| Class A | (2,197,366) | $(29,109,181) | | (2,509,713) | $(31,302,968) | | (712,792) | $(9,753,409) | | (942,079) | $(12,227,555) |
| Class B | (255,203) | (3,396,374) | | (295,615) | (3,696,440) | | (64,615) | (874,448) | | (63,311) | (802,794) |
| Class C | (2,830,092) | (37,895,044) | | (2,029,587) | (25,308,469) | | (465,741) | (6,277,817) | | (196,734) | (2,531,929) |
| Class I | (570,253) | (7,567,944) | | (641,812) | (7,985,546) | | (75,504) | (1,062,224) | | (70,651) | (921,928) |
| Class R1 | (92,522) | (1,222,699) | | (179,552) | (2,250,516) | | (181,996) | (2,475,615) | | (191,982) | (2,449,708) |
| Class R2 | (633,352) | (8,428,551) | | (873,315) | (10,977,195) | | (1,494,725) | (20,439,669) | | (1,664,019) | (21,676,574) |
| Class R3 | (1,781,121) | (23,699,084) | | (1,751,389) | (22,029,179) | | (3,214,364) | (43,812,124) | | (1,973,700) | (25,716,896) |
| Class R4 | (1,682,034) | (21,651,258) | | (1,202,527) | (14,989,584) | | (3,452,292) | (46,587,015) | | (2,039,228) | (26,793,723) |
| Class R6 | (1,525,219) | (20,290,999) | | (884,537) | (11,053,808) | | (3,163,122) | (43,915,360) | | (2,100,510) | (27,583,050) |
| Class 529A | (7,073,411) | (76,954,898) | | (5,602,235) | (57,394,727) | | — | — | | — | — |
| Class 529B | (292,301) | (3,174,647) | | (291,128) | (2,973,342) | | — | — | | — | — |
| Class 529C | (2,353,738) | (25,623,632) | | (2,164,819) | (21,976,096) | | — | — | | — | — |
| | (21,286,612) | $(259,014,311) | | (18,426,229) | $(211,937,870) | | (12,825,151) | $(175,197,681) | | (9,242,214) | $(120,704,157) |
Notes to Financial Statements - continued
| | MFS Lifetime Income Fund − continued | | MFS Lifetime 2020 Fund − continued |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Net change | | | | | | | | | | | |
| Class A | 1,757,685 | $23,641,565 | | 1,097,674 | $14,128,419 | | 104,545 | $1,510,000 | | (245,089) | $(3,114,916) |
| Class B | (227,923) | (3,029,237) | | (265,178) | (3,311,238) | | (47,970) | (645,288) | | (46,585) | (582,588) |
| Class C | (2,105,602) | (28,263,435) | | (1,100,510) | (13,653,519) | | (385,284) | (5,191,927) | | (97,344) | (1,249,545) |
| Class I | 584,445 | 7,784,715 | | 12,788 | 209,004 | | 105,335 | 1,381,768 | | (8,421) | (128,864) |
| Class R1 | (63,155) | (832,483) | | (117,812) | (1,480,377) | | (144,110) | (1,962,273) | | (84,622) | (1,044,807) |
| Class R2 | (378,073) | (5,065,261) | | (409,350) | (5,126,107) | | (742,224) | (10,180,249) | | (740,514) | (9,591,702) |
| Class R3 | 14,253 | 36,194 | | 1,071,563 | 13,409,743 | | (811,586) | (10,976,582) | | 874,818 | 11,839,461 |
| Class R4 | (1,152,231) | (14,600,405) | | (462,957) | (5,636,497) | | (2,627,691) | (35,280,238) | | (500,687) | (6,443,329) |
| Class R6 | 2,909,651 | 37,818,175 | | 710,661 | 9,121,775 | | 4,688,446 | 63,290,724 | | (82,544) | (871,245) |
| Class 529A | 1,451,503 | 15,960,633 | | 2,001,934 | 20,525,164 | | — | — | | — | — |
| Class 529B | (120,417) | (1,295,841) | | 16,737 | 181,975 | | — | — | | — | — |
| Class 529C | (548,694) | (6,051,126) | | (258,283) | (2,377,270) | | — | — | | — | — |
| | 2,121,442 | $26,103,494 | | 2,297,267 | $25,991,072 | | 139,461 | $1,945,935 | | (930,988) | $(11,187,535) |
| | MFS Lifetime 2025 Fund | | MFS Lifetime 2030 Fund |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares sold | | | | | | | | | | | |
| Class A | 497,756 | $7,072,342 | | 729,452 | $9,492,890 | | 983,482 | $16,584,993 | | 986,081 | $15,470,303 |
| Class B | 1,458 | 20,633 | | 23,351 | 306,765 | | 7,323 | 122,224 | | 10,127 | 152,796 |
| Class C | 88,660 | 1,231,556 | | 59,063 | 779,383 | | 106,359 | 1,740,251 | | 130,665 | 2,005,222 |
| Class I | 171,587 | 2,354,963 | | 31,666 | 416,897 | | 222,204 | 3,742,891 | | 38,225 | 597,580 |
| Class R1 | 57,823 | 790,122 | | 95,299 | 1,244,387 | | 101,115 | 1,640,693 | | 180,571 | 2,815,251 |
| Class R2 | 412,008 | 5,737,076 | | 726,458 | 9,581,179 | | 895,051 | 14,692,350 | | 1,196,753 | 18,461,871 |
| Class R3 | 2,716,144 | 38,181,386 | | 3,411,078 | 45,118,953 | | 3,471,275 | 57,344,243 | | 3,648,083 | 56,872,959 |
| Class R4 | 1,378,393 | 19,453,637 | | 1,941,059 | 25,706,963 | | 1,569,210 | 26,066,191 | | 2,584,993 | 40,828,337 |
| Class R6 | 12,443,825 | 172,384,366 | | 2,460,279 | 32,479,994 | | 11,080,399 | 181,702,653 | | 2,741,727 | 42,757,924 |
| | 17,767,654 | $247,226,081 | | 9,477,705 | $125,127,411 | | 18,436,418 | $303,636,489 | | 11,517,225 | $179,962,243 |
Shares issued to shareholders in
reinvestment of distributions | | | | | | | | | | | |
| Class A | 45,895 | $661,785 | | 53,186 | $715,889 | | 153,806 | $2,628,550 | | 212,292 | $3,388,181 |
| Class B | 1,778 | 25,518 | | 3,575 | 47,836 | | 10,706 | 180,936 | | 21,188 | 334,351 |
| Class C | 5,656 | 80,651 | | 7,659 | 102,011 | | 21,062 | 353,624 | | 37,414 | 586,649 |
| Class I | 5,684 | 82,251 | | 4,008 | 54,103 | | 10,083 | 173,127 | | 7,338 | 117,629 |
| Class R1 | 265 | 3,842 | | 3,843 | 51,474 | | 8,217 | 139,602 | | 23,980 | 379,131 |
| Class R2 | 37,034 | 532,918 | | 65,063 | 872,509 | | 114,205 | 1,935,774 | | 216,849 | 3,430,557 |
| Class R3 | 202,837 | 2,922,888 | | 243,453 | 3,272,003 | | 401,969 | 6,849,556 | | 523,432 | 8,333,046 |
| Class R4 | 152,678 | 2,213,831 | | 303,787 | 4,107,186 | | 254,616 | 4,379,397 | | 570,955 | 9,163,831 |
| Class R6 | 384,951 | 5,577,938 | | 144,130 | 1,947,198 | | 528,702 | 9,088,395 | | 328,144 | 5,266,709 |
| | 836,778 | $12,101,622 | | 828,704 | $11,170,209 | | 1,503,366 | $25,728,961 | | 1,941,592 | $31,000,084 |
Notes to Financial Statements - continued
| | MFS Lifetime 2025 Fund − continued | | MFS Lifetime 2030 Fund − continued |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares reacquired | | | | | | | | | | | |
| Class A | (633,824) | $(8,897,164) | | (227,378) | $(2,955,071) | | (1,233,043) | $(20,528,783) | | (709,987) | $(10,984,153) |
| Class B | (35,188) | (487,399) | | (13,869) | (179,418) | | (112,680) | (1,837,131) | | (148,403) | (2,257,269) |
| Class C | (88,356) | (1,229,683) | | (85,900) | (1,107,846) | | (349,948) | (5,808,846) | | (260,356) | (4,011,249) |
| Class I | (82,279) | (1,136,459) | | (16,598) | (208,720) | | (52,505) | (887,011) | | (28,223) | (443,971) |
| Class R1 | (183,544) | (2,604,981) | | (70,668) | (894,736) | | (292,561) | (4,915,712) | | (190,380) | (2,804,203) |
| Class R2 | (1,074,138) | (15,101,323) | | (1,481,523) | (19,592,729) | | (2,246,271) | (36,980,574) | | (1,895,433) | (29,252,656) |
| Class R3 | (2,849,931) | (40,298,459) | | (2,037,563) | (26,521,302) | | (3,921,515) | (65,225,940) | | (2,753,800) | (42,397,218) |
| Class R4 | (4,300,393) | (59,347,439) | | (2,058,601) | (26,749,852) | | (6,155,369) | (97,025,823) | | (2,173,337) | (33,754,982) |
| Class R6 | (2,798,408) | (40,117,273) | | (1,083,003) | (14,165,093) | | (3,139,765) | (52,909,852) | | (2,079,274) | (31,910,986) |
| | (12,046,061) | $(169,220,180) | | (7,075,103) | $(92,374,767) | | (17,503,657) | $(286,119,672) | | (10,239,193) | $(157,816,687) |
| Net change | | | | | | | | | | | |
| Class A | (90,173) | $(1,163,037) | | 555,260 | $7,253,708 | | (95,755) | $(1,315,240) | | 488,386 | $7,874,331 |
| Class B | (31,952) | (441,248) | | 13,057 | 175,183 | | (94,651) | (1,533,971) | | (117,088) | (1,770,122) |
| Class C | 5,960 | 82,524 | | (19,178) | (226,452) | | (222,527) | (3,714,971) | | (92,277) | (1,419,378) |
| Class I | 94,992 | 1,300,755 | | 19,076 | 262,280 | | 179,782 | 3,029,007 | | 17,340 | 271,238 |
| Class R1 | (125,456) | (1,811,017) | | 28,474 | 401,125 | | (183,229) | (3,135,417) | | 14,171 | 390,179 |
| Class R2 | (625,096) | (8,831,329) | | (690,002) | (9,139,041) | | (1,237,015) | (20,352,450) | | (481,831) | (7,360,228) |
| Class R3 | 69,050 | 805,815 | | 1,616,968 | 21,869,654 | | (48,271) | (1,032,141) | | 1,417,715 | 22,808,787 |
| Class R4 | (2,769,322) | (37,679,971) | | 186,245 | 3,064,297 | | (4,331,543) | (66,580,235) | | 982,611 | 16,237,186 |
| Class R6 | 10,030,368 | 137,845,031 | | 1,521,406 | 20,262,099 | | 8,469,336 | 137,881,196 | | 990,597 | 16,113,647 |
| | 6,558,371 | $90,107,523 | | 3,231,306 | $43,922,853 | | 2,436,127 | $43,245,778 | | 3,219,624 | $53,145,640 |
| | MFS Lifetime 2035 Fund | | MFS Lifetime 2040 Fund |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares sold | | | | | | | | | | | |
| Class A | 339,710 | $5,553,068 | | 575,789 | $8,324,870 | | 591,419 | $10,490,702 | | 758,651 | $12,168,952 |
| Class B | 60 | 1,100 | | 2,707 | 40,863 | | 2,396 | 45,739 | | 11,905 | 195,211 |
| Class C | 41,441 | 663,579 | | 68,741 | 1,012,699 | | 60,508 | 1,033,581 | | 85,686 | 1,356,141 |
| Class I | 46,504 | 744,741 | | 10,621 | 153,597 | | 129,571 | 2,281,878 | | 22,790 | 358,662 |
| Class R1 | 45,049 | 693,289 | | 62,635 | 924,785 | | 99,898 | 1,688,768 | | 94,132 | 1,515,916 |
| Class R2 | 404,612 | 6,424,466 | | 749,806 | 11,143,765 | | 686,851 | 11,893,883 | | 1,015,038 | 16,470,147 |
| Class R3 | 2,740,280 | 44,293,043 | | 3,565,321 | 53,768,520 | | 2,991,484 | 51,820,833 | | 2,760,201 | 44,991,464 |
| Class R4 | 1,070,121 | 17,587,005 | | 1,990,015 | 29,925,113 | | 1,206,230 | 21,025,505 | | 1,845,398 | 30,374,833 |
| Class R6 | 7,729,866 | 122,474,591 | | 2,066,400 | 30,909,296 | | 6,923,997 | 120,413,821 | | 1,811,518 | 29,720,610 |
| | 12,417,643 | $198,434,882 | | 9,092,035 | $136,203,508 | | 12,692,354 | $220,694,710 | | 8,405,319 | $137,151,936 |
Shares issued to shareholders in
reinvestment of distributions | | | | | | | | | | | |
| Class A | 30,694 | $523,647 | | 40,006 | $625,299 | | 65,837 | $1,215,349 | | 127,872 | $2,166,154 |
| Class B | 1,697 | 28,814 | | 2,909 | 45,298 | | 3,795 | 69,751 | | 12,310 | 207,426 |
| Class C | 3,325 | 56,129 | | 5,997 | 92,830 | | 8,968 | 162,680 | | 27,560 | 458,038 |
| Class I | 1,523 | 26,034 | | 2,147 | 33,602 | | 4,530 | 84,166 | | 3,552 | 60,556 |
| Class R1 | 284 | 4,854 | | 3,526 | 54,932 | | 3,818 | 69,952 | | 13,479 | 226,032 |
| Class R2 | 25,302 | 431,653 | | 62,038 | 967,788 | | 66,388 | 1,218,884 | | 163,758 | 2,757,697 |
| Class R3 | 181,064 | 3,090,755 | | 227,155 | 3,552,699 | | 220,704 | 4,071,997 | | 343,819 | 5,824,292 |
| Class R4 | 120,293 | 2,064,233 | | 322,202 | 5,061,792 | | 149,713 | 2,790,654 | | 521,415 | 8,910,957 |
| Class R6 | 247,186 | 4,241,704 | | 122,179 | 1,919,425 | | 259,476 | 4,834,033 | | 200,167 | 3,418,857 |
| | 611,368 | $10,467,823 | | 788,159 | $12,353,665 | | 783,229 | $14,517,466 | | 1,413,932 | $24,030,009 |
Notes to Financial Statements - continued
| | MFS Lifetime 2035 Fund − continued | | MFS Lifetime 2040 Fund − continued |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares reacquired | | | | | | | | | | | |
| Class A | (357,938) | $(6,062,515) | | (245,978) | $(3,478,531) | | (710,268) | $(12,479,327) | | (285,844) | $(4,615,026) |
| Class B | (16,687) | (287,064) | | (15,526) | (236,115) | | (75,198) | (1,334,292) | | (61,363) | (983,185) |
| Class C | (46,870) | (743,908) | | (66,238) | (980,162) | | (267,027) | (4,657,076) | | (159,431) | (2,499,292) |
| Class I | (31,937) | (503,329) | | (17,387) | (244,654) | | (25,835) | (483,686) | | (32,172) | (534,938) |
| Class R1 | (153,929) | (2,531,903) | | (103,247) | (1,530,349) | | (190,967) | (3,394,158) | | (128,168) | (2,042,716) |
| Class R2 | (1,246,545) | (20,208,795) | | (1,068,073) | (15,897,812) | | (1,398,212) | (24,443,982) | | (1,544,188) | (25,166,336) |
| Class R3 | (2,306,373) | (37,044,494) | | (1,563,123) | (23,235,833) | | (2,577,092) | (45,257,451) | | (1,495,831) | (24,235,075) |
| Class R4 | (5,123,963) | (77,951,339) | | (1,348,391) | (19,730,521) | | (5,846,735) | (94,872,112) | | (1,369,698) | (22,174,301) |
| Class R6 | (1,447,461) | (24,142,863) | | (685,781) | (10,214,612) | | (1,610,914) | (29,123,547) | | (1,341,542) | (21,682,859) |
| | (10,731,703) | $(169,476,210) | | (5,113,744) | $(75,548,589) | | (12,702,248) | $(216,045,631) | | (6,418,237) | $(103,933,728) |
| Net change | | | | | | | | | | | |
| Class A | 12,466 | $14,200 | | 369,817 | $5,471,638 | | (53,012) | $(773,276) | | 600,679 | $9,720,080 |
| Class B | (14,930) | (257,150) | | (9,910) | (149,954) | | (69,007) | (1,218,802) | | (37,148) | (580,548) |
| Class C | (2,104) | (24,200) | | 8,500 | 125,367 | | (197,551) | (3,460,815) | | (46,185) | (685,113) |
| Class I | 16,090 | 267,446 | | (4,619) | (57,455) | | 108,266 | 1,882,358 | | (5,830) | (115,720) |
| Class R1 | (108,596) | (1,833,760) | | (37,086) | (550,632) | | (87,251) | (1,635,438) | | (20,557) | (300,768) |
| Class R2 | (816,631) | (13,352,676) | | (256,229) | (3,786,259) | | (644,973) | (11,331,215) | | (365,392) | (5,938,492) |
| Class R3 | 614,971 | 10,339,304 | | 2,229,353 | 34,085,386 | | 635,096 | 10,635,379 | | 1,608,189 | 26,580,681 |
| Class R4 | (3,933,549) | (58,300,101) | | 963,826 | 15,256,384 | | (4,490,792) | (71,055,953) | | 997,115 | 17,111,489 |
| Class R6 | 6,529,591 | 102,573,432 | | 1,502,798 | 22,614,109 | | 5,572,559 | 96,124,307 | | 670,143 | 11,456,608 |
| | 2,297,308 | $39,426,495 | | 4,766,450 | $73,008,584 | | 773,335 | $19,166,545 | | 3,401,014 | $57,248,217 |
| | MFS Lifetime 2045 Fund | | MFS Lifetime 2050 Fund |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares sold | | | | | | | | | | | |
| Class A | 308,154 | $5,272,970 | | 310,028 | $4,776,747 | | 275,350 | $5,648,674 | | 268,596 | $4,966,014 |
| Class B | — | — | | 184 | 2,793 | | 1,823 | 35,778 | | 4,676 | 83,717 |
| Class C | 20,126 | 334,778 | | 33,496 | 481,515 | | 31,908 | 645,449 | | 31,480 | 576,145 |
| Class I | 84,960 | 1,423,288 | | 10,584 | 166,000 | | 27,511 | 566,087 | | 12,630 | 237,605 |
| Class R1 | 25,476 | 403,334 | | 41,336 | 625,050 | | 31,807 | 616,235 | | 37,238 | 677,052 |
| Class R2 | 295,923 | 4,850,770 | | 483,723 | 7,427,045 | | 395,923 | 7,935,350 | | 619,064 | 11,324,889 |
| Class R3 | 2,155,702 | 36,083,420 | | 2,226,739 | 34,384,000 | | 1,902,345 | 38,381,188 | | 1,812,124 | 33,532,786 |
| Class R4 | 1,053,258 | 17,901,754 | | 1,678,897 | 26,064,119 | | 960,256 | 19,396,295 | | 1,307,695 | 24,325,814 |
| Class R6 | 5,386,589 | 88,896,158 | | 1,283,852 | 19,771,943 | | 3,439,436 | 68,293,004 | | 976,734 | 18,125,477 |
| | 9,330,188 | $155,166,472 | | 6,068,839 | $93,699,212 | | 7,066,359 | $141,518,060 | | 5,070,237 | $93,849,499 |
Shares issued to shareholders in
reinvestment of distributions | | | | | | | | | | | |
| Class A | 15,821 | $282,716 | | 22,227 | $362,073 | | 17,999 | $388,597 | | 30,170 | $593,134 |
| Class B | 740 | 13,179 | | 1,512 | 24,535 | | 1,098 | 23,417 | | 3,046 | 59,161 |
| Class C | 1,447 | 25,637 | | 3,642 | 58,739 | | 2,471 | 52,386 | | 5,814 | 112,273 |
| Class I | 2,024 | 36,305 | | 964 | 15,774 | | 818 | 17,631 | | 783 | 15,361 |
| Class R1 | 311 | 5,546 | | 2,124 | 34,430 | | 305 | 6,487 | | 2,215 | 42,823 |
| Class R2 | 15,630 | 278,370 | | 39,627 | 641,963 | | 22,575 | 482,197 | | 53,322 | 1,036,054 |
| Class R3 | 120,891 | 2,157,912 | | 161,026 | 2,619,895 | | 99,338 | 2,127,811 | | 148,567 | 2,897,038 |
| Class R4 | 82,150 | 1,473,762 | | 239,199 | 3,908,511 | | 67,416 | 1,453,486 | | 177,490 | 3,480,585 |
| Class R6 | 146,152 | 2,620,498 | | 71,496 | 1,167,526 | | 104,708 | 2,255,406 | | 82,287 | 1,612,812 |
| | 385,166 | $6,893,925 | | 541,817 | $8,833,446 | | 316,728 | $6,807,418 | | 503,694 | $9,849,241 |
Notes to Financial Statements - continued
| | MFS Lifetime 2045 Fund − continued | | MFS Lifetime 2050 Fund − continued |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares reacquired | | | | | | | | | | | |
| Class A | (177,348) | $(3,121,075) | | (85,346) | $(1,328,976) | | (188,749) | $(3,907,668) | | (136,726) | $(2,479,910) |
| Class B | (5,242) | (90,666) | | (9,537) | (144,314) | | (10,964) | (225,424) | | (14,400) | (229,224) |
| Class C | (63,474) | (1,045,380) | | (46,126) | (699,946) | | (50,292) | (1,048,689) | | (36,692) | (648,180) |
| Class I | (7,280) | (134,100) | | (2,602) | (39,626) | | (6,031) | (126,349) | | (3,931) | (70,814) |
| Class R1 | (69,050) | (1,173,975) | | (43,170) | (657,841) | | (73,693) | (1,499,110) | | (40,015) | (726,702) |
| Class R2 | (780,101) | (12,998,494) | | (706,954) | (10,988,838) | | (785,572) | (15,706,596) | | (631,119) | (11,599,636) |
| Class R3 | (1,689,659) | (28,693,615) | | (938,062) | (14,419,607) | | (1,424,218) | (28,692,617) | | (696,448) | (12,912,862) |
| Class R4 | (4,098,720) | (65,092,848) | | (899,237) | (13,588,281) | | (2,529,134) | (47,651,570) | | (726,373) | (13,595,054) |
| Class R6 | (1,137,118) | (19,790,335) | | (360,787) | (5,415,309) | | (1,093,693) | (22,722,746) | | (526,581) | (9,626,365) |
| | (8,027,992) | $(132,140,488) | | (3,091,821) | $(47,282,738) | | (6,162,346) | $(121,580,769) | | (2,812,285) | $(51,888,747) |
| Net change | | | | | | | | | | | |
| Class A | 146,627 | $2,434,611 | | 246,909 | $3,809,844 | | 104,600 | $2,129,603 | | 162,040 | $3,079,238 |
| Class B | (4,502) | (77,487) | | (7,841) | (116,986) | | (8,043) | (166,229) | | (6,678) | (86,346) |
| Class C | (41,901) | (684,965) | | (8,988) | (159,692) | | (15,913) | (350,854) | | 602 | 40,238 |
| Class I | 79,704 | 1,325,493 | | 8,946 | 142,148 | | 22,298 | 457,369 | | 9,482 | 182,152 |
| Class R1 | (43,263) | (765,095) | | 290 | 1,639 | | (41,581) | (876,388) | | (562) | (6,827) |
| Class R2 | (468,548) | (7,869,354) | | (183,604) | (2,919,830) | | (367,074) | (7,289,049) | | 41,267 | 761,307 |
| Class R3 | 586,934 | 9,547,717 | | 1,449,703 | 22,584,288 | | 577,465 | 11,816,382 | | 1,264,243 | 23,516,962 |
| Class R4 | (2,963,312) | (45,717,332) | | 1,018,859 | 16,384,349 | | (1,501,462) | (26,801,789) | | 758,812 | 14,211,345 |
| Class R6 | 4,395,623 | 71,726,321 | | 994,561 | 15,524,160 | | 2,450,451 | 47,825,664 | | 532,440 | 10,111,924 |
| | 1,687,362 | $29,919,909 | | 3,518,835 | $55,249,920 | | 1,220,741 | $26,744,709 | | 2,761,646 | $51,809,993 |
| | MFS Lifetime 2055 Fund | | MFS Lifetime 2060 Fund |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares sold | | | | | | | | | | | |
| Class A | 264,759 | $4,677,948 | | 207,125 | $3,256,651 | | 145,816 | $2,018,504 | | 161,398 | $1,924,091 |
| Class B | — | — | | 217 | 3,375 | | — | — | | 187 | 2,236 |
| Class C | 21,912 | 375,882 | | 34,884 | 552,200 | | 18,380 | 245,665 | | 16,379 | 198,582 |
| Class I | 16,089 | 279,413 | | 1,495 | 24,039 | | 5,267 | 73,651 | | 3,589 | 47,308 |
| Class R1 | 45,394 | 748,164 | | 65,141 | 1,011,489 | | — | — | | — | — |
| Class R2 | 336,104 | 5,741,394 | | 535,895 | 8,457,047 | | 74,005 | 1,009,775 | | 61,682 | 756,107 |
| Class R3 | 1,614,159 | 27,991,257 | | 1,377,456 | 21,613,001 | | 719,026 | 9,900,593 | | 510,606 | 6,212,336 |
| Class R4 | 718,896 | 12,652,515 | | 1,028,373 | 16,315,521 | | 315,827 | 4,361,535 | | 336,051 | 4,096,780 |
| Class R6 | 1,974,317 | 33,919,276 | | 662,989 | 10,536,421 | | 1,504,954 | 20,393,163 | | 547,986 | 6,468,554 |
| | 4,991,630 | $86,385,849 | | 3,913,575 | $61,769,744 | | 2,783,275 | $38,002,886 | | 1,637,878 | $19,705,994 |
Shares issued to shareholders in
reinvestment of distributions | | | | | | | | | | | |
| Class A | 11,281 | $207,460 | | 14,645 | $245,010 | | 4,689 | $67,477 | | 4,263 | $55,465 |
| Class B | 491 | 8,997 | | 1,031 | 17,232 | | 107 | 1,543 | | 225 | 2,927 |
| Class C | 1,724 | 31,378 | | 3,492 | 57,860 | | 441 | 6,317 | | 704 | 9,126 |
| Class I | 371 | 6,828 | | 272 | 4,553 | | 208 | 3,010 | | 163 | 2,134 |
| Class R1 | 333 | 6,086 | | 2,798 | 46,392 | | 48 | 686 | | 96 | 1,250 |
| Class R2 | 14,544 | 266,729 | | 37,499 | 624,738 | | 1,645 | 23,658 | | 1,713 | 22,290 |
| Class R3 | 63,492 | 1,167,617 | | 74,711 | 1,249,916 | | 15,415 | 221,980 | | 13,001 | 169,401 |
| Class R4 | 40,767 | 753,781 | | 86,827 | 1,459,561 | | 7,973 | 115,208 | | 8,034 | 104,930 |
| Class R6 | 55,408 | 1,025,057 | | 38,150 | 641,296 | | 20,084 | 290,820 | | 9,109 | 119,152 |
| | 188,411 | $3,473,933 | | 259,425 | $4,346,558 | | 50,610 | $730,699 | | 37,308 | $486,675 |
Notes to Financial Statements - continued
| | MFS Lifetime 2055 Fund − continued | | MFS Lifetime 2060 Fund − continued |
| | Year ended
4/30/21 | | Year ended
4/30/20 | | Year ended
4/30/21 | | Year ended
4/30/20 |
| | Shares | Amount | | Shares | Amount | | Shares | Amount | | Shares | Amount |
| Shares reacquired | | | | | | | | | | | |
| Class A | (109,397) | $(1,979,925) | | (55,693) | $(891,591) | | (57,074) | $(798,677) | | (20,887) | $(251,781) |
| Class B | (1,296) | (21,611) | | (3,502) | (56,952) | | (343) | (4,811) | | (357) | (4,278) |
| Class C | (44,268) | (722,786) | | (27,937) | (444,223) | | (9,507) | (124,725) | | (1,616) | (19,573) |
| Class I | (2,029) | (35,059) | | (4,755) | (75,342) | | (168) | (2,511) | | (6) | (72) |
| Class R1 | (124,641) | (2,186,371) | | (52,915) | (824,757) | | — | — | | — | — |
| Class R2 | (701,522) | (12,031,752) | | (538,292) | (8,490,365) | | (63,853) | (899,029) | | (41,268) | (513,697) |
| Class R3 | (1,000,062) | (17,476,103) | | (653,326) | (10,299,314) | | (285,733) | (3,958,103) | | (84,123) | (1,014,347) |
| Class R4 | (1,482,284) | (24,718,469) | | (408,649) | (6,387,064) | | (175,874) | (2,248,614) | | (63,846) | (773,018) |
| Class R6 | (526,337) | (9,462,775) | | (289,469) | (4,535,856) | | (638,384) | (8,560,856) | | (151,134) | (1,790,299) |
| | (3,991,836) | $(68,634,851) | | (2,034,538) | $(32,005,464) | | (1,230,936) | $(16,597,326) | | (363,237) | $(4,367,065) |
| Net change | | | | | | | | | | | |
| Class A | 166,643 | $2,905,483 | | 166,077 | $2,610,070 | | 93,431 | $1,287,304 | | 144,774 | $1,727,775 |
| Class B | (805) | (12,614) | | (2,254) | (36,345) | | (236) | (3,268) | | 55 | 885 |
| Class C | (20,632) | (315,526) | | 10,439 | 165,837 | | 9,314 | 127,257 | | 15,467 | 188,135 |
| Class I | 14,431 | 251,182 | | (2,988) | (46,750) | | 5,307 | 74,150 | | 3,746 | 49,370 |
| Class R1 | (78,914) | (1,432,121) | | 15,024 | 233,124 | | 48 | 686 | | 96 | 1,250 |
| Class R2 | (350,874) | (6,023,629) | | 35,102 | 591,420 | | 11,797 | 134,404 | | 22,127 | 264,700 |
| Class R3 | 677,589 | 11,682,771 | | 798,841 | 12,563,603 | | 448,708 | 6,164,470 | | 439,484 | 5,367,390 |
| Class R4 | (722,621) | (11,312,173) | | 706,551 | 11,388,018 | | 147,926 | 2,228,129 | | 280,239 | 3,428,692 |
| Class R6 | 1,503,388 | 25,481,558 | | 411,670 | 6,641,861 | | 886,654 | 12,123,127 | | 405,961 | 4,797,407 |
| | 1,188,205 | $21,224,931 | | 2,138,462 | $34,110,838 | | 1,602,949 | $22,136,259 | | 1,311,949 | $15,825,604 |
Effective June 1, 2019, purchases of each fund's Class B and Class 529B (if applicable) shares are closed to new and existing investors subject to certain exceptions. Please see each fund’s prospectus for details.
(6) Line of Credit
Each 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 each fund and certain other MFS 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, each 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 April 30, 2021, each fund’s commitment fee and interest expense were as follows and are included in “Miscellaneous” expense in the Statements of Operations:
| | MFS Lifetime
Income Fund | MFS Lifetime
2020 Fund | MFS Lifetime
2025 Fund | MFS Lifetime
2030 Fund | MFS Lifetime
2035 Fund |
| Commitment Fee | $2,961 | $1,627 | $1,957 | $3,149 | $1,762 |
| Interest Expense | — | 786 | 1,331 | 1,974 | 2,171 |
| | MFS Lifetime
2040 Fund | MFS Lifetime
2045 Fund | MFS Lifetime
2050 Fund | MFS Lifetime
2055 Fund | MFS Lifetime
2060 Fund |
| Commitment Fee | $2,285 | $1,223 | $1,248 | $715 | $159 |
| Interest Expense | 2,390 | 1,725 | 1,012 | — | — |
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:
| | MFS Lifetime Income Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $12,628,522 | $1,643,394 | $4,146,634 | $543,605 | $3,675,439 | $14,344,326 |
| MFS Blended Research Growth Equity Fund | 12,793,246 | 1,695,369 | 4,434,417 | 902,619 | 3,316,716 | 14,273,533 |
| MFS Blended Research International Equity Fund | 15,156,550 | 990,591 | 4,748,662 | 486,658 | 5,544,559 | 17,429,696 |
| MFS Blended Research Mid Cap Equity Fund | 19,165,862 | 1,156,441 | 7,390,866 | 1,213,179 | 7,383,913 | 21,528,529 |
| MFS Blended Research Small Cap Equity Fund | 6,456,901 | 464,125 | 3,186,831 | 546,394 | 2,782,681 | 7,063,270 |
| MFS Blended Research Value Equity Fund | 12,541,458 | 1,123,234 | 4,326,912 | 666,066 | 4,326,265 | 14,330,111 |
| MFS Commodity Strategy Fund | 11,194,579 | 1,337,291 | 3,660,804 | (503,067) | 6,108,328 | 14,476,327 |
| MFS Emerging Markets Debt Fund | 11,816,178 | 1,465,853 | 799,154 | (19,580) | 1,303,582 | 13,766,878 |
| MFS Emerging Markets Debt Local Currency Fund(a) | 5,941,280 | 752,780 | 650,458 | (24,690) | 799,235 | 6,818,147 |
| MFS Global Opportunistic Bond Fund | 29,305,837 | 5,049,463 | 1,444,890 | 4,208 | 1,335,128 | 34,249,746 |
| MFS Global Real Estate Fund | 12,389,028 | 824,398 | 2,991,176 | 232,379 | 3,895,324 | 14,349,953 |
| MFS Government Securities Fund | 56,613,616 | 16,157,324 | 2,054,415 | (9,869) | (2,215,122) | 68,491,534 |
| MFS Growth Fund | 12,595,517 | 1,354,278 | 3,951,237 | 1,398,527 | 2,880,105 | 14,277,190 |
| MFS High Income Fund | 17,950,290 | 2,422,815 | 1,258,446 | (61,487) | 1,721,979 | 20,775,151 |
| MFS Inflation-Adjusted Bond Fund | 56,844,752 | 12,116,129 | 2,416,110 | 7,472 | 2,617,523 | 69,169,767 |
| MFS Institutional Money Market Portfolio | 1,176,620 | 26,124,592 | 26,242,749 | (104) | (24) | 1,058,335 |
| MFS International Growth Fund | 3,064,734 | 140,244 | 749,859 | 162,392 | 864,451 | 3,481,962 |
| MFS International Intrinsic Value Fund | 3,042,349 | 313,224 | 602,507 | 79,721 | 644,289 | 3,477,076 |
| MFS Limited Maturity Fund | 115,480,821 | 24,579,029 | 5,711,092 | (5,410) | 2,959,193 | 137,302,541 |
| MFS Mid Cap Growth Fund | 9,474,698 | 608,778 | 3,401,051 | 1,425,893 | 2,460,556 | 10,568,874 |
| MFS Mid Cap Value Fund | 9,553,023 | 532,164 | 3,968,890 | 942,321 | 3,736,840 | 10,795,458 |
| MFS New Discovery Fund | 3,278,456 | 511,122 | 1,770,284 | 429,114 | 1,039,134 | 3,487,542 |
| MFS New Discovery Value Fund | 3,250,810 | 328,822 | 1,756,139 | 417,585 | 1,325,900 | 3,566,978 |
| MFS Research Fund | 12,588,213 | 1,281,670 | 3,556,108 | 541,167 | 3,521,393 | 14,376,335 |
| MFS Research International Fund | 9,093,886 | 469,187 | 2,329,436 | 424,968 | 2,785,277 | 10,443,882 |
| MFS Total Return Bond Fund | 117,955,963 | 22,624,398 | 4,874,630 | (16,052) | 1,601,884 | 137,291,563 |
| MFS Value Fund | 12,463,332 | 1,154,818 | 3,474,113 | 584,799 | 3,591,812 | 14,320,648 |
| | $593,816,521 | $127,221,533 | $105,897,870 | $10,368,808 | $70,006,360 | $695,515,352 |
Notes to Financial Statements - continued
| | MFS Lifetime Income Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $218,204 | $736,231 |
| MFS Blended Research Growth Equity Fund | 211,529 | 703,758 |
| MFS Blended Research International Equity Fund | 427,770 | — |
| MFS Blended Research Mid Cap Equity Fund | 220,543 | 500 |
| MFS Blended Research Small Cap Equity Fund | 53,121 | — |
| MFS Blended Research Value Equity Fund | 272,693 | — |
| MFS Commodity Strategy Fund | 129,144 | — |
| MFS Emerging Markets Debt Fund | 552,673 | — |
| MFS Emerging Markets Debt Local Currency Fund (a) | 143,518 | — |
| MFS Global Opportunistic Bond Fund | 1,008,157 | 201,700 |
| MFS Global Real Estate Fund | 146,440 | — |
| MFS Government Securities Fund | 1,208,438 | — |
| MFS Growth Fund | — | 486,252 |
| MFS High Income Fund | 945,857 | — |
| MFS Inflation-Adjusted Bond Fund | 845,077 | — |
| MFS Institutional Money Market Portfolio | 1,338 | — |
| MFS International Growth Fund | 28,390 | — |
| MFS International Intrinsic Value Fund | 26,231 | 162,689 |
| MFS Limited Maturity Fund | 2,875,019 | — |
| MFS Mid Cap Growth Fund | — | 84,041 |
| MFS Mid Cap Value Fund | 118,172 | — |
| MFS New Discovery Fund | 131,507 | 183,863 |
| MFS New Discovery Value Fund | 40,558 | 38,599 |
| MFS Research Fund | 133,595 | 592,866 |
| MFS Research International Fund | 110,717 | — |
| MFS Total Return Bond Fund | 3,748,600 | 168,227 |
| MFS Value Fund | 233,836 | 143,476 |
| | $13,831,127 | $3,502,202 |
Notes to Financial Statements - continued
| | MFS Lifetime 2020 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $7,252,202 | $2,426,632 | $4,702,722 | $483,168 | $1,798,600 | $7,257,880 |
| MFS Blended Research Growth Equity Fund | 7,360,640 | 2,518,287 | 4,959,850 | 857,847 | 1,447,881 | 7,224,805 |
| MFS Blended Research International Equity Fund | 8,691,790 | 2,309,354 | 5,349,882 | 447,605 | 2,880,896 | 8,979,763 |
| MFS Blended Research Mid Cap Equity Fund | 10,807,938 | 2,776,765 | 7,421,694 | 958,266 | 3,685,111 | 10,806,386 |
| MFS Blended Research Small Cap Equity Fund | 3,528,387 | 1,195,725 | 2,926,674 | 399,571 | 1,393,487 | 3,590,496 |
| MFS Blended Research Value Equity Fund | 7,186,107 | 2,244,483 | 4,854,081 | 524,013 | 2,169,238 | 7,269,760 |
| MFS Commodity Strategy Fund | 6,155,938 | 2,017,534 | 3,934,234 | (509,017) | 3,542,757 | 7,272,978 |
| MFS Emerging Markets Debt Fund | 6,710,335 | 1,984,908 | 2,136,268 | (6,320) | 733,324 | 7,285,979 |
| MFS Emerging Markets Debt Local Currency Fund (a) | 3,545,097 | 1,032,285 | 1,409,457 | (656) | 456,189 | 3,623,458 |
| MFS Global Opportunistic Bond Fund | 15,898,413 | 5,614,549 | 4,102,455 | (283) | 752,090 | 18,162,314 |
| MFS Global Real Estate Fund | 6,719,056 | 2,120,831 | 3,797,336 | 254,503 | 1,967,977 | 7,265,031 |
| MFS Government Securities Fund | 31,019,919 | 13,171,667 | 6,637,427 | (40,118) | (1,173,893) | 36,340,148 |
| MFS Growth Fund | 7,235,262 | 2,446,244 | 4,825,159 | 1,486,954 | 868,765 | 7,212,066 |
| MFS High Income Fund | 10,324,507 | 3,100,736 | 3,428,882 | (71,403) | 997,657 | 10,922,615 |
| MFS Inflation-Adjusted Bond Fund | 31,078,577 | 11,722,478 | 7,967,755 | 11,994 | 1,443,849 | 36,289,143 |
| MFS Institutional Money Market Portfolio | 111,160 | 7,769,261 | 7,635,218 | (11) | — | 245,192 |
| MFS International Growth Fund | 1,830,175 | 440,771 | 1,058,517 | 327,167 | 250,515 | 1,790,111 |
| MFS International Intrinsic Value Fund | 1,821,651 | 528,877 | 971,530 | 269,975 | 143,700 | 1,792,673 |
| MFS Limited Maturity Fund | 59,948,834 | 25,005,891 | 13,820,109 | (1,869) | 1,560,905 | 72,693,652 |
| MFS Mid Cap Growth Fund | 5,359,252 | 1,518,898 | 3,630,985 | 1,287,806 | 857,981 | 5,392,952 |
| MFS Mid Cap Value Fund | 5,378,512 | 1,580,829 | 4,044,080 | 1,038,321 | 1,493,714 | 5,447,296 |
| MFS New Discovery Fund | 1,799,630 | 643,759 | 1,445,381 | 383,671 | 411,995 | 1,793,674 |
| MFS New Discovery Value Fund | 1,773,031 | 685,333 | 1,581,177 | 317,371 | 616,146 | 1,810,704 |
| MFS Research Fund | 7,222,329 | 2,220,237 | 4,384,006 | 915,239 | 1,292,410 | 7,266,209 |
| MFS Research International Fund | 5,096,873 | 1,356,104 | 2,832,725 | 470,738 | 1,293,175 | 5,384,165 |
| MFS Total Return Bond Fund | 62,247,148 | 22,972,323 | 13,322,391 | (59,929) | 892,846 | 72,729,997 |
| MFS Value Fund | 7,129,787 | 2,289,254 | 4,399,210 | 754,733 | 1,507,570 | 7,282,134 |
| | $323,232,550 | $123,694,015 | $127,579,205 | $10,499,336 | $33,284,885 | $363,131,581 |
Notes to Financial Statements - continued
| | MFS Lifetime 2020 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $118,279 | $399,080 |
| MFS Blended Research Growth Equity Fund | 115,390 | 383,902 |
| MFS Blended Research International Equity Fund | 226,246 | — |
| MFS Blended Research Mid Cap Equity Fund | 117,730 | 267 |
| MFS Blended Research Small Cap Equity Fund | 27,749 | — |
| MFS Blended Research Value Equity Fund | 145,931 | — |
| MFS Commodity Strategy Fund | 71,222 | — |
| MFS Emerging Markets Debt Fund | 306,866 | — |
| MFS Emerging Markets Debt Local Currency Fund (a) | 76,316 | — |
| MFS Global Opportunistic Bond Fund | 554,899 | 110,861 |
| MFS Global Real Estate Fund | 80,076 | — |
| MFS Government Securities Fund | 669,478 | — |
| MFS Growth Fund | — | 268,003 |
| MFS High Income Fund | 526,530 | — |
| MFS Inflation-Adjusted Bond Fund | 467,200 | — |
| MFS Institutional Money Market Portfolio | 149 | — |
| MFS International Growth Fund | 15,158 | — |
| MFS International Intrinsic Value Fund | 14,151 | 87,767 |
| MFS Limited Maturity Fund | 1,570,764 | — |
| MFS Mid Cap Growth Fund | — | 44,754 |
| MFS Mid Cap Value Fund | 62,783 | — |
| MFS New Discovery Fund | 70,149 | 98,076 |
| MFS New Discovery Value Fund | 22,190 | 21,119 |
| MFS Research Fund | 71,847 | 318,843 |
| MFS Research International Fund | 59,473 | — |
| MFS Total Return Bond Fund | 2,061,652 | 93,398 |
| MFS Value Fund | 131,532 | 78,161 |
| | $7,583,760 | $1,904,231 |
Notes to Financial Statements - continued
| | MFS Lifetime 2025 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $10,513,321 | $4,265,373 | $4,800,173 | $308,020 | $3,758,368 | $14,044,909 |
| MFS Blended Research Growth Equity Fund | 10,591,015 | 4,846,956 | 5,522,793 | 366,992 | 3,707,401 | 13,989,571 |
| MFS Blended Research International Equity Fund | 13,784,718 | 5,382,616 | 6,902,172 | 343,065 | 5,817,460 | 18,425,687 |
| MFS Blended Research Mid Cap Equity Fund | 14,831,006 | 4,073,529 | 7,459,219 | 916,912 | 6,520,997 | 18,883,225 |
| MFS Blended Research Small Cap Equity Fund | 3,685,807 | 1,339,123 | 2,371,944 | 257,523 | 1,929,371 | 4,839,880 |
| MFS Blended Research Value Equity Fund | 10,497,965 | 4,156,549 | 5,391,061 | 404,352 | 4,432,602 | 14,100,407 |
| MFS Commodity Strategy Fund | 6,602,813 | 3,297,638 | 3,697,176 | (565,969) | 4,269,922 | 9,907,228 |
| MFS Emerging Markets Debt Fund | 9,692,373 | 5,355,987 | 2,177,904 | (36,105) | 1,165,213 | 13,999,564 |
| MFS Emerging Markets Debt Local Currency Fund (a) | 6,522,169 | 3,931,315 | 2,244,968 | (47,904) | 969,667 | 9,130,279 |
| MFS Global Opportunistic Bond Fund | 16,027,142 | 10,795,276 | 3,466,401 | 4,063 | 752,494 | 24,112,574 |
| MFS Global Real Estate Fund | 7,054,639 | 2,747,233 | 2,715,762 | 78,564 | 2,608,281 | 9,772,955 |
| MFS Government Securities Fund | 31,540,573 | 23,971,170 | 5,830,235 | (16,732) | (1,472,748) | 48,192,028 |
| MFS Growth Fund | 10,444,694 | 4,788,270 | 5,367,302 | 348,079 | 3,790,774 | 14,004,515 |
| MFS High Income Fund | 16,168,559 | 8,946,192 | 3,627,945 | (141,181) | 1,799,322 | 23,144,947 |
| MFS Inflation-Adjusted Bond Fund | 30,671,779 | 21,962,982 | 5,901,618 | 17,260 | 1,664,008 | 48,414,411 |
| MFS Institutional Money Market Portfolio | 784,432 | 11,421,350 | 11,424,411 | (14) | (65) | 781,292 |
| MFS International Growth Fund | 3,467,332 | 1,316,612 | 1,564,343 | 105,568 | 1,209,127 | 4,534,296 |
| MFS International Intrinsic Value Fund | 3,437,958 | 1,514,873 | 1,348,017 | 46,624 | 869,720 | 4,521,158 |
| MFS International New Discovery Fund | 317,978 | — | 360,148 | 85,191 | (43,021) | — |
| MFS Limited Maturity Fund | 28,910,845 | 27,989,609 | 4,196,985 | (929) | 765,204 | 53,467,744 |
| MFS Mid Cap Growth Fund | 7,264,159 | 2,704,804 | 3,954,736 | 662,607 | 2,715,270 | 9,392,104 |
| MFS Mid Cap Value Fund | 7,408,421 | 2,307,366 | 4,262,091 | 589,611 | 3,467,266 | 9,510,573 |
| MFS New Discovery Fund | 1,845,781 | 824,349 | 1,197,235 | 177,269 | 774,188 | 2,424,352 |
| MFS New Discovery Value Fund | 1,864,267 | 703,823 | 1,273,469 | 152,742 | 989,717 | 2,437,080 |
| MFS Research Fund | 10,456,583 | 4,103,594 | 4,371,182 | 265,361 | 3,639,807 | 14,094,163 |
| MFS Research International Fund | 6,896,371 | 2,589,246 | 2,877,152 | 150,045 | 2,580,458 | 9,338,968 |
| MFS Total Return Bond Fund | 46,023,045 | 36,553,183 | 7,868,461 | (20,240) | 362,880 | 75,050,407 |
| MFS Value Fund | 10,397,593 | 4,384,222 | 4,713,805 | 293,725 | 3,746,370 | 14,108,105 |
| | $327,703,338 | $206,273,240 | $116,888,708 | $4,744,499 | $62,790,053 | $484,622,422 |
Notes to Financial Statements - continued
| | MFS Lifetime 2025 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $213,544 | $720,508 |
| MFS Blended Research Growth Equity Fund | 208,599 | 694,011 |
| MFS Blended Research International Equity Fund | 441,658 | — |
| MFS Blended Research Mid Cap Equity Fund | 191,345 | 434 |
| MFS Blended Research Small Cap Equity Fund | 34,706 | — |
| MFS Blended Research Value Equity Fund | 265,005 | — |
| MFS Commodity Strategy Fund | 86,763 | — |
| MFS Emerging Markets Debt Fund | 536,985 | — |
| MFS Emerging Markets Debt Local Currency Fund (a) | 198,863 | — |
| MFS Global Opportunistic Bond Fund | 669,783 | 135,136 |
| MFS Global Real Estate Fund | 97,264 | — |
| MFS Government Securities Fund | 791,280 | — |
| MFS Growth Fund | — | 481,940 |
| MFS High Income Fund | 1,017,032 | — |
| MFS Inflation-Adjusted Bond Fund | 562,191 | — |
| MFS Institutional Money Market Portfolio | 877 | — |
| MFS International Growth Fund | 36,813 | — |
| MFS International Intrinsic Value Fund | 34,091 | 211,441 |
| MFS International New Discovery Fund | — | — |
| MFS Limited Maturity Fund | 946,458 | — |
| MFS Mid Cap Growth Fund | — | 73,562 |
| MFS Mid Cap Value Fund | 102,506 | — |
| MFS New Discovery Fund | 86,296 | 120,652 |
| MFS New Discovery Value Fund | 26,720 | 25,429 |
| MFS Research Fund | 131,174 | 582,123 |
| MFS Research International Fund | 96,055 | — |
| MFS Total Return Bond Fund | 1,847,310 | 85,859 |
| MFS Value Fund | 235,280 | 140,904 |
| | $8,858,598 | $3,271,999 |
Notes to Financial Statements - continued
| | MFS Lifetime 2030 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $24,860,305 | $6,835,091 | $9,523,802 | $478,419 | $8,247,181 | $30,897,194 |
| MFS Blended Research Emerging Markets Equity Fund | 297,208 | — | 326,006 | 23,208 | 5,590 | — |
| MFS Blended Research Growth Equity Fund | 26,136,753 | 6,341,897 | 10,521,480 | 1,829,513 | 6,959,262 | 30,745,945 |
| MFS Blended Research International Equity Fund | 37,170,740 | 7,374,488 | 14,149,746 | 758,950 | 14,296,930 | 45,451,362 |
| MFS Blended Research Mid Cap Equity Fund | 45,453,257 | 7,487,155 | 20,640,180 | 2,214,529 | 18,520,259 | 53,035,020 |
| MFS Blended Research Small Cap Equity Fund | 9,888,907 | 1,809,121 | 5,400,241 | 637,670 | 4,566,888 | 11,502,345 |
| MFS Blended Research Value Equity Fund | 25,652,391 | 5,862,089 | 10,941,394 | 916,243 | 9,558,206 | 31,047,535 |
| MFS Commodity Strategy Fund | 17,290,506 | 4,680,722 | 7,405,543 | (1,314,062) | 10,157,942 | 23,409,565 |
| MFS Emerging Markets Debt Fund | 17,382,522 | 7,528,858 | 3,096,161 | (78,977) | 1,984,872 | 23,721,114 |
| MFS Emerging Markets Debt Local Currency Fund (a) | 11,670,628 | 5,135,987 | 2,563,915 | (112,658) | 1,647,178 | 15,777,220 |
| MFS Emerging Markets Equity Fund | 298,001 | — | 331,914 | 146,473 | (112,560) | — |
| MFS Global Opportunistic Bond Fund | 27,126,192 | 15,570,138 | 4,498,853 | (15,054) | 1,237,046 | 39,419,469 |
| MFS Global Real Estate Fund | 18,917,648 | 3,541,030 | 5,964,941 | 132,193 | 6,307,207 | 22,933,137 |
| MFS Government Securities Fund | 50,839,494 | 38,002,714 | 7,578,158 | (25,522) | (2,362,548) | 78,875,980 |
| MFS Growth Fund | 25,717,261 | 5,853,304 | 9,631,108 | 3,049,115 | 5,890,715 | 30,879,287 |
| MFS High Income Fund | 29,389,897 | 12,448,853 | 5,052,922 | (267,294) | 3,029,345 | 39,547,879 |
| MFS Inflation-Adjusted Bond Fund | 38,475,262 | 23,734,795 | 6,046,793 | 8,773 | 1,900,022 | 58,072,059 |
| MFS Institutional Money Market Portfolio | 839,087 | 16,719,700 | 16,719,403 | (34) | (39) | 839,311 |
| MFS International Growth Fund | 9,622,368 | 1,784,319 | 3,304,474 | 595,179 | 2,629,863 | 11,327,255 |
| MFS International Intrinsic Value Fund | 9,537,354 | 2,446,529 | 2,975,483 | 559,273 | 1,714,561 | 11,282,234 |
| MFS International New Discovery Fund | 6,753,391 | 1,140,422 | 2,852,001 | 352,910 | 1,571,612 | 6,966,334 |
| MFS Limited Maturity Fund | — | 8,790,131 | 5,008 | (25) | (15,067) | 8,770,031 |
| MFS Mid Cap Growth Fund | 22,388,925 | 4,484,292 | 9,951,255 | 3,283,803 | 6,117,426 | 26,323,191 |
| MFS Mid Cap Value Fund | 22,664,905 | 4,126,653 | 11,422,501 | 2,084,178 | 9,274,689 | 26,727,924 |
| MFS New Discovery Fund | 5,026,607 | 1,212,032 | 2,756,304 | 559,761 | 1,711,738 | 5,753,834 |
| MFS New Discovery Value Fund | 4,985,177 | 1,119,662 | 3,075,624 | 550,898 | 2,185,408 | 5,765,521 |
| MFS Research Fund | 24,786,357 | 6,096,807 | 8,246,109 | 350,736 | 8,035,885 | 31,023,676 |
| MFS Research International Fund | 18,147,804 | 3,654,311 | 5,733,815 | 472,640 | 6,133,276 | 22,674,216 |
| MFS Total Return Bond Fund | 43,465,069 | 31,636,219 | 6,103,980 | (25,356) | 392,599 | 69,364,551 |
| MFS Value Fund | 25,484,392 | 6,099,135 | 9,377,732 | 690,794 | 8,042,839 | 30,939,428 |
| | $600,268,408 | $241,516,454 | $206,196,846 | $17,856,276 | $139,628,325 | $793,072,617 |
Notes to Financial Statements - continued
| | MFS Lifetime 2030 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $459,162 | $1,549,236 |
| MFS Blended Research Emerging Markets Equity Fund | — | — |
| MFS Blended Research Growth Equity Fund | 445,107 | 1,480,874 |
| MFS Blended Research International Equity Fund | 1,073,656 | — |
| MFS Blended Research Mid Cap Equity Fund | 537,201 | 1,218 |
| MFS Blended Research Small Cap Equity Fund | 83,384 | — |
| MFS Blended Research Value Equity Fund | 573,424 | — |
| MFS Commodity Strategy Fund | 204,051 | — |
| MFS Emerging Markets Debt Fund | 880,124 | — |
| MFS Emerging Markets Debt Local Currency Fund (a) | 316,580 | — |
| MFS Emerging Markets Equity Fund | — | — |
| MFS Global Opportunistic Bond Fund | 1,067,052 | 214,650 |
| MFS Global Real Estate Fund | 230,854 | — |
| MFS Government Securities Fund | 1,251,575 | — |
| MFS Growth Fund | — | 1,024,342 |
| MFS High Income Fund | 1,670,814 | — |
| MFS Inflation-Adjusted Bond Fund | 635,030 | — |
| MFS Institutional Money Market Portfolio | 926 | — |
| MFS International Growth Fund | 89,277 | — |
| MFS International Intrinsic Value Fund | 82,470 | 511,500 |
| MFS International New Discovery Fund | 35,268 | 250,301 |
| MFS Limited Maturity Fund | 36,518 | — |
| MFS Mid Cap Growth Fund | — | 205,328 |
| MFS Mid Cap Value Fund | 288,174 | — |
| MFS New Discovery Fund | 207,351 | 289,903 |
| MFS New Discovery Value Fund | 62,852 | 59,816 |
| MFS Research Fund | 281,306 | 1,248,379 |
| MFS Research International Fund | 231,919 | — |
| MFS Total Return Bond Fund | 1,605,763 | 73,012 |
| MFS Value Fund | 510,302 | 302,880 |
| | $12,860,140 | $7,211,439 |
Notes to Financial Statements - continued
| | MFS Lifetime 2035 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $13,498,142 | $4,956,677 | $3,925,077 | $34,718 | $5,117,734 | $19,682,194 |
| MFS Blended Research Emerging Markets Equity Fund | 1,725,287 | 531,513 | 819,765 | 8,882 | 726,702 | 2,172,619 |
| MFS Blended Research Growth Equity Fund | 18,826,303 | 7,805,266 | 7,282,738 | 434,682 | 6,558,435 | 26,341,948 |
| MFS Blended Research International Equity Fund | 28,211,679 | 9,941,781 | 10,400,838 | (457,126) | 12,706,090 | 40,001,586 |
| MFS Blended Research Mid Cap Equity Fund | 30,872,275 | 8,084,941 | 11,195,732 | (204,217) | 15,764,951 | 43,322,218 |
| MFS Blended Research Small Cap Equity Fund | 7,010,141 | 1,924,833 | 3,433,390 | 72,627 | 3,986,329 | 9,560,540 |
| MFS Blended Research Value Equity Fund | 18,473,097 | 6,317,210 | 6,765,486 | (269,123) | 8,628,856 | 26,384,554 |
| MFS Commodity Strategy Fund | 12,857,163 | 5,449,880 | 5,474,642 | (1,130,348) | 8,044,583 | 19,746,636 |
| MFS Emerging Markets Debt Fund | 9,263,971 | 6,654,125 | 2,241,143 | (52,388) | 1,079,130 | 14,703,695 |
| MFS Emerging Markets Debt Local Currency Fund(a) | 6,219,054 | 4,485,278 | 1,739,123 | (96,413) | 914,020 | 9,782,816 |
| MFS Emerging Markets Equity Fund | 1,724,092 | 545,667 | 827,573 | 13,807 | 699,541 | 2,155,534 |
| MFS Global Opportunistic Bond Fund | 6,153,290 | 6,518,353 | 1,489,736 | 66 | 237,129 | 11,419,102 |
| MFS Global Real Estate Fund | 13,422,244 | 4,622,161 | 3,750,187 | (253,130) | 5,268,093 | 19,309,181 |
| MFS Government Securities Fund | — | 5,548,504 | — | — | (71,796) | 5,476,708 |
| MFS Growth Fund | 18,668,259 | 7,899,509 | 7,283,645 | 589,257 | 6,520,908 | 26,394,288 |
| MFS High Income Fund | 15,387,549 | 11,367,894 | 3,750,182 | (174,743) | 1,693,754 | 24,524,272 |
| MFS Inflation-Adjusted Bond Fund | 15,612,071 | 13,185,865 | 3,960,854 | 13,378 | 775,761 | 25,626,221 |
| MFS Institutional Money Market Portfolio | 393,256 | 7,014,274 | 7,009,877 | (30) | (13) | 397,610 |
| MFS International Growth Fund | 8,382,249 | 2,920,184 | 2,734,645 | 35,866 | 3,012,279 | 11,615,933 |
| MFS International Intrinsic Value Fund | 8,316,177 | 3,704,208 | 2,562,253 | 36,780 | 2,080,999 | 11,575,911 |
| MFS International New Discovery Fund | 6,953,686 | 2,451,563 | 2,419,631 | (59,090) | 2,245,906 | 9,172,434 |
| MFS Mid Cap Growth Fund | 15,232,388 | 5,524,158 | 6,127,395 | 416,400 | 6,517,272 | 21,562,823 |
| MFS Mid Cap Value Fund | 15,378,861 | 4,460,689 | 6,583,251 | (26,573) | 8,551,484 | 21,781,210 |
| MFS New Discovery Fund | 3,530,219 | 1,392,643 | 1,857,422 | 174,904 | 1,564,367 | 4,804,711 |
| MFS New Discovery Value Fund | 3,546,925 | 1,075,108 | 1,954,354 | 48,084 | 2,088,602 | 4,804,365 |
| MFS Research Fund | 13,420,713 | 5,037,302 | 3,650,993 | 46,102 | 4,899,495 | 19,752,619 |
| MFS Research International Fund | 11,555,555 | 4,274,198 | 3,530,938 | (25,332) | 4,465,309 | 16,738,792 |
| MFS Total Return Bond Fund | 9,580,865 | 10,139,990 | 2,349,964 | (4,506) | 59,537 | 17,425,922 |
| MFS Value Fund | 18,335,984 | 6,935,339 | 5,876,952 | (205,407) | 7,171,848 | 26,360,812 |
| | $332,551,495 | $160,769,113 | $120,997,786 | $(1,032,873) | $121,307,305 | $492,597,254 |
Notes to Financial Statements - continued
| | MFS Lifetime 2035 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $267,801 | $903,576 |
| MFS Blended Research Emerging Markets Equity Fund | 34,383 | — |
| MFS Blended Research Growth Equity Fund | 354,811 | 1,180,459 |
| MFS Blended Research International Equity Fund | 882,480 | — |
| MFS Blended Research Mid Cap Equity Fund | 404,226 | 917 |
| MFS Blended Research Small Cap Equity Fund | 64,999 | — |
| MFS Blended Research Value Equity Fund | 458,172 | — |
| MFS Commodity Strategy Fund | 159,696 | — |
| MFS Emerging Markets Debt Fund | 507,601 | — |
| MFS Emerging Markets Debt Local Currency Fund (a) | 193,178 | — |
| MFS Emerging Markets Equity Fund | 16,987 | — |
| MFS Global Opportunistic Bond Fund | 263,414 | 52,866 |
| MFS Global Real Estate Fund | 179,572 | — |
| MFS Government Securities Fund | 20,780 | — |
| MFS Growth Fund | — | 819,976 |
| MFS High Income Fund | 962,984 | — |
| MFS Inflation-Adjusted Bond Fund | 266,126 | — |
| MFS Institutional Money Market Portfolio | 439 | — |
| MFS International Growth Fund | 86,042 | — |
| MFS International Intrinsic Value Fund | 79,580 | 493,576 |
| MFS International New Discovery Fund | 41,272 | 292,914 |
| MFS Mid Cap Growth Fund | — | 153,682 |
| MFS Mid Cap Value Fund | 217,078 | — |
| MFS New Discovery Fund | 160,292 | 224,107 |
| MFS New Discovery Value Fund | 47,235 | 44,953 |
| MFS Research Fund | 164,350 | 729,351 |
| MFS Research International Fund | 157,214 | — |
| MFS Total Return Bond Fund | 363,458 | 16,468 |
| MFS Value Fund | 407,313 | 242,187 |
| | $6,761,483 | $5,155,032 |
Notes to Financial Statements - continued
| | MFS Lifetime 2040 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $17,556,812 | $5,300,179 | $4,600,781 | $(44,413) | $6,439,861 | $24,651,658 |
| MFS Blended Research Emerging Markets Equity Fund | 3,319,443 | 1,041,450 | 1,349,143 | 61,170 | 1,330,423 | 4,403,343 |
| MFS Blended Research Growth Equity Fund | 25,662,641 | 9,207,792 | 8,773,298 | 1,169,634 | 7,964,414 | 35,231,183 |
| MFS Blended Research International Equity Fund | 42,188,549 | 12,276,435 | 13,801,315 | (218,448) | 17,887,330 | 58,332,551 |
| MFS Blended Research Mid Cap Equity Fund | 42,618,586 | 8,631,410 | 13,800,486 | (118,945) | 20,722,179 | 58,052,744 |
| MFS Blended Research Small Cap Equity Fund | 10,293,849 | 2,547,324 | 4,919,328 | 240,085 | 5,436,244 | 13,598,174 |
| MFS Blended Research Value Equity Fund | 25,167,888 | 7,202,448 | 7,990,059 | (120,488) | 11,160,417 | 35,420,206 |
| MFS Commodity Strategy Fund | 18,950,430 | 6,749,584 | 7,680,846 | (1,581,335) | 11,302,438 | 27,740,271 |
| MFS Emerging Markets Debt Fund | 5,787,512 | 4,974,151 | 1,240,815 | (37,924) | 648,621 | 10,131,545 |
| MFS Emerging Markets Debt Local Currency Fund(a) | 3,880,472 | 3,205,340 | 814,463 | (53,981) | 534,965 | 6,752,333 |
| MFS Emerging Markets Equity Fund | 3,318,102 | 1,052,363 | 1,350,067 | 83,501 | 1,257,754 | 4,361,653 |
| MFS Global Opportunistic Bond Fund | 3,845,114 | 3,606,722 | 863,885 | (1,268) | 146,539 | 6,733,222 |
| MFS Global Real Estate Fund | 19,688,527 | 5,935,060 | 5,264,722 | (258,394) | 7,370,952 | 27,471,423 |
| MFS Growth Fund | 25,329,193 | 9,190,631 | 8,572,587 | 1,902,065 | 7,412,296 | 35,261,598 |
| MFS High Income Fund | 9,629,426 | 8,298,373 | 1,982,861 | (96,646) | 1,039,240 | 16,887,532 |
| MFS Inflation-Adjusted Bond Fund | 15,215,380 | 11,446,664 | 3,693,891 | 8,512 | 717,339 | 23,694,004 |
| MFS Institutional Money Market Portfolio | 113,308 | 6,250,441 | 6,018,503 | (14) | 4 | 345,236 |
| MFS International Growth Fund | 13,087,824 | 4,073,234 | 3,866,386 | 137,185 | 4,458,958 | 17,890,815 |
| MFS International Intrinsic Value Fund | 12,998,766 | 5,195,300 | 3,551,836 | 176,017 | 3,018,871 | 17,837,118 |
| MFS International New Discovery Fund | 13,419,787 | 4,259,008 | 4,255,366 | (64,543) | 4,154,149 | 17,513,035 |
| MFS Mid Cap Growth Fund | 20,926,484 | 6,537,351 | 7,736,744 | 1,668,463 | 7,524,231 | 28,919,785 |
| MFS Mid Cap Value Fund | 21,247,370 | 4,925,220 | 8,211,123 | 390,014 | 10,944,496 | 29,295,977 |
| MFS New Discovery Fund | 5,210,093 | 1,850,971 | 2,700,537 | 346,092 | 2,098,459 | 6,805,078 |
| MFS New Discovery Value Fund | 5,201,311 | 1,380,412 | 2,719,248 | 286,459 | 2,728,876 | 6,877,810 |
| MFS Research Fund | 17,463,530 | 5,394,050 | 4,308,910 | (20,635) | 6,178,217 | 24,706,252 |
| MFS Research International Fund | 16,153,423 | 4,938,740 | 4,497,557 | 29,039 | 5,945,495 | 22,569,140 |
| MFS Total Return Bond Fund | 11,506,462 | 8,154,501 | 2,883,907 | (8,930) | 111,705 | 16,879,831 |
| MFS Value Fund | 24,999,616 | 8,018,146 | 6,830,254 | (236,766) | 9,436,391 | 35,387,133 |
| | $434,779,898 | $161,643,300 | $144,278,918 | $3,635,506 | $157,970,864 | $613,750,650 |
Notes to Financial Statements - continued
| | MFS Lifetime 2040 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $335,754 | $1,132,852 |
| MFS Blended Research Emerging Markets Equity Fund | 65,935 | — |
| MFS Blended Research Growth Equity Fund | 467,868 | 1,556,601 |
| MFS Blended Research International Equity Fund | 1,275,580 | — |
| MFS Blended Research Mid Cap Equity Fund | 536,661 | 1,217 |
| MFS Blended Research Small Cap Equity Fund | 91,951 | — |
| MFS Blended Research Value Equity Fund | 605,517 | — |
| MFS Commodity Strategy Fund | 224,478 | — |
| MFS Emerging Markets Debt Fund | 325,412 | — |
| MFS Emerging Markets Debt Local Currency Fund (a) | 128,269 | — |
| MFS Emerging Markets Equity Fund | 32,579 | — |
| MFS Global Opportunistic Bond Fund | 161,508 | 32,451 |
| MFS Global Real Estate Fund | 254,187 | — |
| MFS Growth Fund | — | 1,079,204 |
| MFS High Income Fund | 617,658 | — |
| MFS Inflation-Adjusted Bond Fund | 249,026 | — |
| MFS Institutional Money Market Portfolio | 144 | — |
| MFS International Growth Fund | 130,283 | — |
| MFS International Intrinsic Value Fund | 120,371 | 746,571 |
| MFS International New Discovery Fund | 77,991 | 553,510 |
| MFS Mid Cap Growth Fund | — | 203,926 |
| MFS Mid Cap Value Fund | 288,931 | — |
| MFS New Discovery Fund | 226,321 | 316,425 |
| MFS New Discovery Value Fund | 65,485 | 62,323 |
| MFS Research Fund | 205,569 | 912,272 |
| MFS Research International Fund | 211,524 | — |
| MFS Total Return Bond Fund | 399,614 | 17,974 |
| MFS Value Fund | 534,356 | 319,821 |
| | $7,632,972 | $6,935,147 |
Notes to Financial Statements - continued
| | MFS Lifetime 2045 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $9,244,335 | $4,176,173 | $2,693,408 | $(16,526) | $3,643,174 | $14,353,748 |
| MFS Blended Research Emerging Markets Equity Fund | 2,275,197 | 1,175,131 | 1,030,449 | (19,187) | 1,060,981 | 3,461,673 |
| MFS Blended Research Growth Equity Fund | 14,416,602 | 7,185,730 | 5,672,358 | 209,704 | 5,206,281 | 21,345,959 |
| MFS Blended Research International Equity Fund | 24,816,053 | 11,743,069 | 9,089,357 | (507,068) | 11,716,906 | 38,679,603 |
| MFS Blended Research Mid Cap Equity Fund | 22,918,666 | 8,833,191 | 8,519,180 | (379,958) | 12,671,280 | 35,523,999 |
| MFS Blended Research Small Cap Equity Fund | 5,772,624 | 2,669,496 | 3,227,570 | 30,659 | 3,570,430 | 8,815,639 |
| MFS Blended Research Value Equity Fund | 13,599,456 | 6,391,854 | 5,019,116 | (327,220) | 6,857,375 | 21,502,349 |
| MFS Commodity Strategy Fund | 11,069,112 | 6,380,050 | 5,698,421 | (981,364) | 7,126,817 | 17,896,194 |
| MFS Emerging Markets Debt Fund | — | 619,662 | — | — | (6,426) | 613,236 |
| MFS Emerging Markets Debt Local Currency Fund(a) | — | 416,909 | — | — | (8,754) | 408,155 |
| MFS Emerging Markets Equity Fund | 2,265,132 | 1,168,254 | 976,401 | (20,430) | 1,016,816 | 3,453,371 |
| MFS Global Opportunistic Bond Fund | — | 415,103 | — | — | (7,109) | 407,994 |
| MFS Global Real Estate Fund | 11,238,226 | 5,857,738 | 3,796,614 | (256,744) | 4,749,042 | 17,791,648 |
| MFS Growth Fund | 14,279,852 | 7,399,532 | 5,860,140 | 288,261 | 5,233,428 | 21,340,933 |
| MFS High Income Fund | — | 1,017,567 | — | — | 5,001 | 1,022,568 |
| MFS Inflation-Adjusted Bond Fund | 6,036,606 | 4,898,173 | 1,735,160 | 7,257 | 270,503 | 9,477,379 |
| MFS Institutional Money Market Portfolio | 365,476 | 5,155,545 | 5,154,350 | (15) | (22) | 366,634 |
| MFS International Growth Fund | 8,042,500 | 3,820,490 | 2,623,001 | (3,230) | 3,006,305 | 12,243,064 |
| MFS International Intrinsic Value Fund | 8,202,342 | 4,546,688 | 2,591,579 | 3,760 | 2,058,673 | 12,219,884 |
| MFS International New Discovery Fund | 9,136,821 | 4,690,443 | 3,027,178 | (153,107) | 3,175,664 | 13,822,643 |
| MFS Mid Cap Growth Fund | 11,601,424 | 5,778,514 | 5,109,149 | 225,969 | 5,234,570 | 17,731,328 |
| MFS Mid Cap Value Fund | 11,359,658 | 4,838,920 | 5,056,389 | (167,884) | 6,913,842 | 17,888,147 |
| MFS New Discovery Fund | 2,977,241 | 1,623,991 | 1,727,170 | 103,313 | 1,429,983 | 4,407,358 |
| MFS New Discovery Value Fund | 2,916,437 | 1,352,449 | 1,739,725 | 2,620 | 1,901,953 | 4,433,734 |
| MFS Research Fund | 9,242,965 | 4,232,545 | 2,572,152 | 7,452 | 3,481,796 | 14,392,606 |
| MFS Research International Fund | 9,089,514 | 4,361,702 | 2,888,121 | (41,973) | 3,617,178 | 14,138,300 |
| MFS Total Return Bond Fund | 5,960,294 | 4,793,698 | 1,744,601 | (5,317) | 51,213 | 9,055,287 |
| MFS Value Fund | 13,602,572 | 6,969,403 | 4,495,025 | (233,760) | 5,678,296 | 21,521,486 |
| | $230,429,105 | $122,512,020 | $92,046,614 | $(2,234,788) | $99,655,196 | $358,314,919 |
Notes to Financial Statements - continued
| | MFS Lifetime 2045 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $192,455 | $649,354 |
| MFS Blended Research Emerging Markets Equity Fund | 50,352 | — |
| MFS Blended Research Growth Equity Fund | 280,823 | 934,300 |
| MFS Blended Research International Equity Fund | 819,229 | — |
| MFS Blended Research Mid Cap Equity Fund | 321,795 | 730 |
| MFS Blended Research Small Cap Equity Fund | 57,920 | — |
| MFS Blended Research Value Equity Fund | 357,717 | — |
| MFS Commodity Strategy Fund | 144,144 | — |
| MFS Emerging Markets Debt Fund | 6,290 | — |
| MFS Emerging Markets Debt Local Currency Fund (a) | 4,644 | — |
| MFS Emerging Markets Equity Fund | 24,772 | — |
| MFS Global Opportunistic Bond Fund | 3,511 | 695 |
| MFS Global Real Estate Fund | 162,353 | — |
| MFS Growth Fund | — | 648,430 |
| MFS High Income Fund | 11,800 | — |
| MFS Inflation-Adjusted Bond Fund | 96,399 | — |
| MFS Institutional Money Market Portfolio | 415 | — |
| MFS International Growth Fund | 87,025 | — |
| MFS International Intrinsic Value Fund | 80,700 | 500,517 |
| MFS International New Discovery Fund | 59,520 | 422,419 |
| MFS Mid Cap Growth Fund | — | 123,474 |
| MFS Mid Cap Value Fund | 172,250 | — |
| MFS New Discovery Fund | 143,335 | 200,400 |
| MFS New Discovery Value Fund | 40,090 | 38,154 |
| MFS Research Fund | 117,763 | 522,607 |
| MFS Research International Fund | 129,067 | — |
| MFS Total Return Bond Fund | 207,867 | 9,457 |
| MFS Value Fund | 316,332 | 191,217 |
| | $3,888,568 | $4,241,754 |
Notes to Financial Statements - continued
| | MFS Lifetime 2050 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $9,506,278 | $3,658,725 | $2,237,302 | $(28,642) | $3,723,676 | $14,622,735 |
| MFS Blended Research Emerging Markets Equity Fund | 2,339,143 | 1,088,529 | 865,069 | (3,602) | 1,074,025 | 3,633,026 |
| MFS Blended Research Growth Equity Fund | 14,954,213 | 6,446,694 | 4,993,344 | 103,276 | 5,330,613 | 21,841,452 |
| MFS Blended Research International Equity Fund | 25,578,145 | 10,082,455 | 7,227,877 | (275,585) | 11,780,548 | 39,937,686 |
| MFS Blended Research Mid Cap Equity Fund | 23,748,658 | 6,485,889 | 6,415,400 | (262,253) | 12,858,293 | 36,415,187 |
| MFS Blended Research Small Cap Equity Fund | 6,006,340 | 1,980,511 | 2,589,116 | 28,591 | 3,663,715 | 9,090,041 |
| MFS Blended Research Value Equity Fund | 14,054,148 | 5,245,153 | 4,008,422 | (168,376) | 6,898,526 | 22,021,029 |
| MFS Commodity Strategy Fund | 11,370,682 | 5,363,082 | 4,549,000 | (795,904) | 7,065,635 | 18,454,495 |
| MFS Emerging Markets Equity Fund | 2,329,644 | 1,090,910 | 817,025 | (8,119) | 1,028,267 | 3,623,677 |
| MFS Global Real Estate Fund | 11,621,151 | 4,618,798 | 2,520,968 | (201,671) | 4,811,596 | 18,328,906 |
| MFS Growth Fund | 14,826,368 | 6,575,407 | 5,080,593 | 334,074 | 5,199,127 | 21,854,383 |
| MFS Inflation-Adjusted Bond Fund | 6,287,997 | 4,341,313 | 1,752,800 | 19,968 | 257,176 | 9,153,654 |
| MFS Institutional Money Market Portfolio | 347,483 | 5,594,310 | 5,603,825 | (46) | 12 | 337,934 |
| MFS International Growth Fund | 8,263,622 | 3,448,611 | 2,091,296 | (31,150) | 3,094,760 | 12,684,547 |
| MFS International Intrinsic Value Fund | 8,471,101 | 4,324,904 | 2,232,441 | (28,585) | 2,119,576 | 12,654,555 |
| MFS International New Discovery Fund | 9,418,526 | 4,339,386 | 2,347,728 | (138,967) | 3,232,599 | 14,503,816 |
| MFS Mid Cap Growth Fund | 11,940,621 | 4,833,424 | 4,106,828 | 95,329 | 5,414,091 | 18,176,637 |
| MFS Mid Cap Value Fund | 11,801,799 | 3,635,939 | 4,064,733 | (47,776) | 7,014,292 | 18,339,521 |
| MFS New Discovery Fund | 3,086,343 | 1,410,602 | 1,494,631 | 65,218 | 1,478,163 | 4,545,695 |
| MFS New Discovery Value Fund | 3,038,589 | 1,053,748 | 1,490,375 | 28,247 | 1,941,053 | 4,571,262 |
| MFS Research Fund | 9,508,799 | 3,682,318 | 2,073,650 | (26,281) | 3,575,905 | 14,667,091 |
| MFS Research International Fund | 9,366,533 | 3,728,470 | 2,233,330 | (51,389) | 3,701,042 | 14,511,326 |
| MFS Total Return Bond Fund | 6,178,134 | 4,546,619 | 1,620,815 | (1,997) | 45,201 | 9,147,142 |
| MFS Value Fund | 14,037,900 | 5,710,834 | 3,323,156 | (192,615) | 5,796,275 | 22,029,238 |
| | $238,082,217 | $103,286,631 | $75,739,724 | $(1,588,255) | $101,104,166 | $365,145,035 |
Notes to Financial Statements - continued
| | MFS Lifetime 2050 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $197,959 | $667,925 |
| MFS Blended Research Emerging Markets Equity Fund | 52,147 | — |
| MFS Blended Research Growth Equity Fund | 289,312 | 962,540 |
| MFS Blended Research International Equity Fund | 844,743 | — |
| MFS Blended Research Mid Cap Equity Fund | 331,557 | 752 |
| MFS Blended Research Small Cap Equity Fund | 59,577 | — |
| MFS Blended Research Value Equity Fund | 368,112 | — |
| MFS Commodity Strategy Fund | 149,300 | — |
| MFS Emerging Markets Equity Fund | 25,653 | — |
| MFS Global Real Estate Fund | 167,503 | — |
| MFS Growth Fund | — | 665,354 |
| MFS Inflation-Adjusted Bond Fund | 97,092 | — |
| MFS Institutional Money Market Portfolio | 377 | — |
| MFS International Growth Fund | 89,879 | — |
| MFS International Intrinsic Value Fund | 83,478 | 517,749 |
| MFS International New Discovery Fund | 61,704 | 447,656 |
| MFS Mid Cap Growth Fund | — | 127,088 |
| MFS Mid Cap Value Fund | 177,370 | — |
| MFS New Discovery Fund | 147,875 | 206,747 |
| MFS New Discovery Value Fund | 41,054 | 39,072 |
| MFS Research Fund | 121,235 | 538,013 |
| MFS Research International Fund | 133,063 | — |
| MFS Total Return Bond Fund | 211,143 | — |
| MFS Value Fund | 320,629 | 196,378 |
| | $3,970,762 | $4,369,274 |
Notes to Financial Statements - continued
| | MFS Lifetime 2055 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $4,978,574 | $2,258,559 | $1,227,164 | $(3,974) | $2,025,386 | $8,031,381 |
| MFS Blended Research Emerging Markets Equity Fund | 1,236,348 | 648,829 | 463,212 | (10,704) | 590,660 | 2,001,921 |
| MFS Blended Research Growth Equity Fund | 7,664,373 | 3,894,423 | 2,537,911 | 90,656 | 2,903,934 | 12,015,475 |
| MFS Blended Research International Equity Fund | 13,546,585 | 6,340,818 | 4,152,483 | (234,372) | 6,472,587 | 21,973,135 |
| MFS Blended Research Mid Cap Equity Fund | 12,549,483 | 4,360,542 | 3,701,039 | (140,855) | 6,992,451 | 20,060,582 |
| MFS Blended Research Small Cap Equity Fund | 3,188,114 | 1,200,090 | 1,376,125 | (20,862) | 2,024,716 | 5,015,933 |
| MFS Blended Research Value Equity Fund | 7,415,091 | 3,339,367 | 2,317,973 | (124,166) | 3,788,476 | 12,100,795 |
| MFS Commodity Strategy Fund | 6,108,364 | 3,326,718 | 2,612,429 | (396,120) | 3,810,518 | 10,237,051 |
| MFS Emerging Markets Equity Fund | 1,234,307 | 671,908 | 462,369 | (8,486) | 560,543 | 1,995,903 |
| MFS Global Real Estate Fund | 6,182,249 | 3,084,336 | 1,695,403 | (130,177) | 2,653,594 | 10,094,599 |
| MFS Growth Fund | 7,604,484 | 4,038,429 | 2,654,495 | 114,532 | 2,928,922 | 12,031,872 |
| MFS Inflation-Adjusted Bond Fund | 3,250,187 | 2,447,404 | 819,974 | 1,469 | 149,898 | 5,028,984 |
| MFS Institutional Money Market Portfolio | 237,837 | 3,016,692 | 3,053,251 | (2) | (21) | 201,255 |
| MFS International Growth Fund | 4,337,672 | 2,150,335 | 1,167,749 | (11,909) | 1,676,059 | 6,984,408 |
| MFS International Intrinsic Value Fund | 4,360,966 | 2,603,831 | 1,130,127 | 987 | 1,138,008 | 6,973,665 |
| MFS International New Discovery Fund | 4,964,352 | 2,692,526 | 1,356,598 | (53,024) | 1,736,190 | 7,983,446 |
| MFS Mid Cap Growth Fund | 6,223,831 | 3,064,718 | 2,268,796 | 89,165 | 2,913,568 | 10,022,486 |
| MFS Mid Cap Value Fund | 6,258,422 | 2,450,068 | 2,401,793 | (57,681) | 3,842,115 | 10,091,131 |
| MFS New Discovery Fund | 1,611,949 | 804,337 | 746,443 | 50,640 | 796,566 | 2,517,049 |
| MFS New Discovery Value Fund | 1,618,357 | 650,775 | 820,726 | (14,886) | 1,082,914 | 2,516,434 |
| MFS Research Fund | 4,973,047 | 2,324,931 | 1,179,766 | 6,996 | 1,936,892 | 8,062,100 |
| MFS Research International Fund | 4,941,591 | 2,371,209 | 1,308,270 | (22,173) | 2,002,564 | 7,984,921 |
| MFS Total Return Bond Fund | 3,207,386 | 2,597,657 | 804,636 | (4,948) | 27,196 | 5,022,655 |
| MFS Value Fund | 7,404,666 | 3,625,558 | 2,002,653 | (101,900) | 3,158,656 | 12,084,327 |
| | $125,098,235 | $63,964,060 | $42,261,385 | $(981,794) | $55,212,392 | $201,031,508 |
Notes to Financial Statements - continued
| | MFS Lifetime 2055 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $106,216 | $358,376 |
| MFS Blended Research Emerging Markets Equity Fund | 27,927 | — |
| MFS Blended Research Growth Equity Fund | 155,242 | 516,490 |
| MFS Blended Research International Equity Fund | 452,102 | — |
| MFS Blended Research Mid Cap Equity Fund | 177,080 | 402 |
| MFS Blended Research Small Cap Equity Fund | 31,726 | — |
| MFS Blended Research Value Equity Fund | 196,975 | — |
| MFS Commodity Strategy Fund | 80,051 | — |
| MFS Emerging Markets Equity Fund | 13,745 | — |
| MFS Global Real Estate Fund | 89,883 | — |
| MFS Growth Fund | — | 357,168 |
| MFS Inflation-Adjusted Bond Fund | 52,604 | — |
| MFS Institutional Money Market Portfolio | 269 | — |
| MFS International Growth Fund | 48,038 | — |
| MFS International Intrinsic Value Fund | 44,679 | 277,114 |
| MFS International New Discovery Fund | 33,002 | 234,213 |
| MFS Mid Cap Growth Fund | — | 67,902 |
| MFS Mid Cap Value Fund | 94,762 | — |
| MFS New Discovery Fund | 79,095 | 110,584 |
| MFS New Discovery Value Fund | 22,279 | 21,203 |
| MFS Research Fund | 64,838 | 287,736 |
| MFS Research International Fund | 71,196 | — |
| MFS Total Return Bond Fund | 115,030 | 5,225 |
| MFS Value Fund | 173,746 | 105,746 |
| | $2,130,485 | $2,342,159 |
Notes to Financial Statements - continued
| | MFS Lifetime 2060 Fund |
| Affiliated Issuers | Beginning
Value | Purchases | Sales
Proceeds | Realized
Gain
(Loss) | Change in
Unrealized
Appreciation or
Depreciation | Ending
Value |
| MFS Blended Research Core Equity Fund | $960,085 | $1,206,885 | $274,160 | $(8,895) | $512,206 | $2,396,121 |
| MFS Blended Research Emerging Markets Equity Fund | 240,240 | 324,425 | 109,089 | (2,536) | 144,540 | 597,580 |
| MFS Blended Research Growth Equity Fund | 1,446,163 | 2,023,180 | 598,868 | (271) | 719,695 | 3,589,899 |
| MFS Blended Research International Equity Fund | 2,634,560 | 3,337,136 | 924,080 | (49,316) | 1,577,404 | 6,575,704 |
| MFS Blended Research Mid Cap Equity Fund | 2,427,196 | 2,479,453 | 647,231 | (50,305) | 1,772,206 | 5,981,319 |
| MFS Blended Research Small Cap Equity Fund | 622,689 | 648,103 | 284,730 | (14,010) | 522,485 | 1,494,537 |
| MFS Blended Research Value Equity Fund | 1,435,327 | 1,682,467 | 453,460 | (46,910) | 989,645 | 3,607,069 |
| MFS Commodity Strategy Fund | 1,205,956 | 1,556,566 | 587,677 | (64,142) | 922,841 | 3,033,544 |
| MFS Emerging Markets Equity Fund | 240,279 | 333,067 | 106,859 | (3,075) | 133,690 | 597,102 |
| MFS Global Real Estate Fund | 1,202,275 | 1,569,509 | 403,610 | (38,943) | 671,508 | 3,000,739 |
| MFS Growth Fund | 1,444,959 | 2,055,529 | 642,657 | 760 | 731,087 | 3,589,678 |
| MFS Inflation-Adjusted Bond Fund | 597,365 | 1,107,054 | 237,431 | (310) | 35,750 | 1,502,428 |
| MFS Institutional Money Market Portfolio | 15,861 | 1,046,877 | 1,028,171 | — | — | 34,567 |
| MFS International Growth Fund | 839,284 | 1,131,104 | 278,449 | (2,272) | 400,486 | 2,090,153 |
| MFS International Intrinsic Value Fund | 836,349 | 1,270,840 | 278,922 | (740) | 262,010 | 2,089,537 |
| MFS International New Discovery Fund | 960,324 | 1,359,500 | 322,312 | (11,228) | 403,909 | 2,390,193 |
| MFS Mid Cap Growth Fund | 1,198,490 | 1,546,229 | 468,567 | (4,248) | 716,577 | 2,988,481 |
| MFS Mid Cap Value Fund | 1,214,689 | 1,256,230 | 427,640 | (37,200) | 997,196 | 3,003,275 |
| MFS New Discovery Fund | 304,030 | 384,817 | 138,021 | 913 | 195,694 | 747,433 |
| MFS New Discovery Value Fund | 317,670 | 315,619 | 158,776 | (17,167) | 291,627 | 748,973 |
| MFS Research Fund | 959,872 | 1,226,198 | 267,605 | (6,003) | 488,298 | 2,400,760 |
| MFS Research International Fund | 958,500 | 1,284,292 | 326,579 | (4,947) | 479,432 | 2,390,698 |
| MFS Total Return Bond Fund | 599,563 | 1,141,057 | 233,498 | (1,130) | (1,216) | 1,504,776 |
| MFS Value Fund | 1,434,364 | 1,840,605 | 450,214 | (32,452) | 815,371 | 3,607,674 |
| | $24,096,090 | $32,126,742 | $9,648,606 | $(394,427) | $13,782,441 | $59,962,240 |
Notes to Financial Statements - continued
| | MFS Lifetime 2060 Fund - continued |
| Affiliated Issuers | Dividend
Income | Capital Gain
Distributions |
| MFS Blended Research Core Equity Fund | $27,754 | $93,644 |
| MFS Blended Research Emerging Markets Equity Fund | 7,262 | — |
| MFS Blended Research Growth Equity Fund | 40,546 | 134,898 |
| MFS Blended Research International Equity Fund | 117,274 | — |
| MFS Blended Research Mid Cap Equity Fund | 46,099 | 104 |
| MFS Blended Research Small Cap Equity Fund | 8,239 | — |
| MFS Blended Research Value Equity Fund | 51,418 | — |
| MFS Commodity Strategy Fund | 20,831 | — |
| MFS Emerging Markets Equity Fund | 3,555 | — |
| MFS Global Real Estate Fund | 23,496 | — |
| MFS Growth Fund | — | 92,469 |
| MFS Inflation-Adjusted Bond Fund | 13,565 | — |
| MFS Institutional Money Market Portfolio | 19 | — |
| MFS International Growth Fund | 12,485 | — |
| MFS International Intrinsic Value Fund | 11,618 | 72,057 |
| MFS International New Discovery Fund | 8,591 | 60,967 |
| MFS Mid Cap Growth Fund | — | 17,651 |
| MFS Mid Cap Value Fund | 24,623 | — |
| MFS New Discovery Fund | 20,377 | 28,490 |
| MFS New Discovery Value Fund | 5,126 | 4,879 |
| MFS Research Fund | 16,884 | 74,928 |
| MFS Research International Fund | 18,516 | — |
| MFS Total Return Bond Fund | 28,760 | 1,354 |
| MFS Value Fund | 43,562 | 27,666 |
| | $550,600 | $609,107 |
| (a) | Amounts reflect the impact of a return of capital distribution adjustment which has the effect of reducing dividend income and increasing realized gain (loss) and/or change in unrealized appreciation (depreciation). |
(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. Multiple surges in cases globally, the availability and widespread adoption of vaccines, and the emergence of variant strains of the virus continue to create uncertainty as to the future and long-term impacts resulting from the pandemic including impacts to the prices and liquidity of each fund's investments and each fund's performance.
Report of Independent Registered Public Accounting Firm
To the Shareholders of MFS Lifetime Funds and the Board of Trustees of MFS Series Trust XII
Opinion on the Financial Statements
We have audited the accompanying statements of assets and liabilities of MFS Lifetime Income Fund, MFS Lifetime 2020 Fund, MFS Lifetime 2025 Fund, MFS Lifetime 2030 Fund, MFS Lifetime 2035 Fund, MFS Lifetime 2040 Fund, MFS Lifetime 2045 Fund, MFS Lifetime 2050 Fund, MFS Lifetime 2055 Fund and MFS Lifetime 2060 Fund (collectively referred to as the “MFS Lifetime Funds”) (ten of the funds constituting MFS Series Trust XII (the “Trust”)), including the portfolios of investments, as of April 30, 2021, and the related statements of openrations and changes in net assets and the financial highlights for each of the periods indicated in the table below and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of each of the MFS Lifetime Funds (ten of the funds constituting MFS Series Trust XII) at April 30, 2021, and the results of their operations, changes in net assets and financial highlights for each of the periods indicated in the table below, in conformity with U.S. generally accepted accounting principles.
| Individual fund constituting the MFS Series Trust XII | Statement of operations | Statements of changes in net assets | Financial Highlights |
| MFS Lifetime Income Fund MFS Lifetime 2020 Fund MFS Lifetime 2025 Fund MFS Lifetime 2030 Fund MFS Lifetime 2035 Fund MFS Lifetime 2040 Fund MFS Lifetime 2045 Fund MFS Lifetime 2050 Fund MFS Lifetime 2055 Fund | For the year ended April 30, 2021 | For each of the two years in the
period ended April 30, 2021 | For each of the five years in the
period ended April 30, 2021 |
| MFS Lifetime 2060 Fund | For the year ended April 30, 2021 | For each of the two years in the
period ended April 30, 2021 | For each of the four years in the
period ended April 30, 2021 and
the period from December 6, 2016 (commencement of operations)
through April 30, 2017 |
Basis for Opinion
These financial statements are the responsibility of the Trust’s management. Our responsibility is to express an opinion on each of the MFS Lifetime Funds’ financial statements 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 Trust 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 are free of material misstatement, whether due to error or fraud. The Trust is not required to have, nor were we engaged to perform, an audit of the Trust’s 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 Trust’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, 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. Our procedures included confirmation of securities owned as of April 30, 2021, by correspondence with the transfer agent. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.
We have served as the auditor of one or more MFS investment companies since 1993.
Boston, Massachusetts
June 15, 2021
Trustees and Officers — Identification and Background
The Trustees and Officers of the Trust, as of June 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 | | 135 | | 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 | | 135 | | 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 | | 135 | | Private investor | | N/A |
Steven E. Buller
(age 69) | | Trustee | | February 2014 | | 135 | | Private investor | | N/A |
John A. Caroselli
(age 66) | | Trustee | | March 2017 | | 135 | | Private investor; JC Global Advisors, LLC (management consulting), President (since 2015) | | N/A |
Maureen R. Goldfarb
(age 66) | | Trustee | | January 2009 | | 135 | | Private investor | | N/A |
Peter D. Jones
(age 65) | | Trustee | | January 2019 | | 135 | | Private investor | | N/A |
James W. Kilman, Jr.
(age 60) | | Trustee | | January 2019 | | 135 | | Burford Capital Limited (finance and investment management), Senior Advisor (since May 3, 2021), Chief Financial Officer (2019 - May 2, 2021); 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 65) | | Trustee | | March 2017 | | 135 | | Private investor | | VF Corporation, Director; Verizon Communications, Inc., Director; The Travelers Companies, Director |
Maryanne L. Roepke
(age 65) | | Trustee | | May 2014 | | 135 | | Private investor | | N/A |
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) |
Laurie J. Thomsen
(age 63) | | Trustee | | March 2005 | | 135 | | 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 | | 135 | | Massachusetts Financial Services Company, Senior Vice President and Associate General Counsel |
Kino Clark (k)
(age 52) | | Assistant Treasurer | | January 2012 | | 135 | | Massachusetts Financial Services Company, Vice President |
John W. Clark, Jr. (k)
(age 54) | | Assistant Treasurer | | April 2017 | | 135 | | 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 | | 135 | | Massachusetts Financial Services Company, Vice President and Senior Counsel |
David L. DiLorenzo (k)
(age 52) | | President | | July 2005 | | 135 | | Massachusetts Financial Services Company, Senior Vice President |
Heidi W. Hardin (k)
(age 53) | | Secretary and Clerk | | April 2017 | | 135 | | 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 48) | | Assistant Secretary and Assistant Clerk | | June 2006 | | 135 | | Massachusetts Financial Services Company, Vice President and Senior Counsel |
Amanda S. Mooradian (k)
(age 42) | | Assistant Secretary and Assistant Clerk | | September 2018 | | 135 | | Massachusetts Financial Services Company, Assistant Vice President and Senior Counsel |
Susan A. Pereira (k)
(age 50) | | Assistant Secretary and Assistant Clerk | | July 2005 | | 135 | | Massachusetts Financial Services Company, Vice President and Assistant General Counsel |
Kasey L. Phillips (k)
(age 50) | | Assistant Treasurer | | September 2012 | | 135 | | Massachusetts Financial Services Company, Vice President |
Matthew A. Stowe (k)
(age 46) | | Assistant Secretary and Assistant Clerk | | October 2014 | | 135 | | Massachusetts Financial Services Company, Vice President and Assistant General Counsel |
Martin J. Wolin (k)
(age 53) | | Chief Compliance Officer | | July 2015 | | 135 | | Massachusetts Financial Services Company, Senior Vice President and Chief Compliance Officer |
James O. Yost (k)
(age 60) | | Treasurer | | September 1990 | | 135 | | 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. |
Trustees and Officers - continued
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.
| 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 | Ernst & Young LLP
200 Clarendon Street
Boston, MA 02116 |
| Portfolio Manager(s) | |
Joseph Flaherty
Natalie Shapiro | |
Statement Regarding Liquidity Risk Management Program
Each fund has adopted and implemented a liquidity risk management program (the “Program”) as required by Rule 22e-4 under the Investment Company Act of 1940, as amended. Each fund’s Board of Trustees (the “Board”) has designated MFS as the administrator of the Program. The Program is reasonably designed to assess and manage the liquidity risk of each fund. Liquidity risk is the risk that each fund could not meet requests to redeem shares issued by each fund without significant dilution of remaining investors' interests.
MFS provided a written report to the Board for consideration at its April 2021 meeting that addressed the operation of the Program and provided an assessment of the adequacy and effectiveness of the Program during the period from January 1, 2020 to December 31, 2020 (the “Covered Period”). The report concluded that during the Covered Period the Program had operated effectively and had adequately and effectively been implemented to assess and manage each fund’s liquidity risk. MFS also reported that there were no liquidity events that impacted each fund or its ability to timely meet redemptions without dilution to existing shareholders during the Covered Period.
There can be no assurance that the Program will achieve its objectives in the future. Further information on liquidity risk, and other principal risks to which an investment in each fund may be subject, can be found in each fund's prospectus.
Proxy Voting Policies and Information
MFS votes proxies on behalf of the funds 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 each 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
Each 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. Each 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 each 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 each 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 each 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
Each 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 funds will notify shareholders of amounts for use in preparing 2021 income tax forms in January 2022. The following information is provided pursuant to provisions of the Internal Revenue Code.
The funds designate the maximum amount allowable as qualified dividend income eligible to be taxed at the same rate as long-term capital gain.
The funds below designated the following amounts as capital gain dividends paid during the fiscal year:
| | Capital
Gains |
| MFS Lifetime Income Fund | $6,847,000 |
| MFS Lifetime 2020 Fund | $7,969,000 |
| MFS Lifetime 2025 Fund | $3,217,000 |
| MFS Lifetime 2030 Fund | $17,263,000 |
| MFS Lifetime 2035 Fund | $4,496,000 |
| MFS Lifetime 2040 Fund | $9,912,000 |
| MFS Lifetime 2045 Fund | $3,493,000 |
| MFS Lifetime 2050 Fund | $3,706,000 |
| MFS Lifetime 2055 Fund | $1,792,000 |
| MFS Lifetime 2060 Fund | $275,000 |
Federal Tax Information (unaudited) - continued
For corporate shareholders, the percentages of the ordinary income dividends paid during the fiscal year that qualify for the corporate dividends received deduction are as follows:
| | Dividends Received
Deductions |
| MFS Lifetime Income Fund | 9.47% |
| MFS Lifetime 2020 Fund | 8.55% |
| MFS Lifetime 2025 Fund | 11.39% |
| MFS Lifetime 2030 Fund | 21.33% |
| MFS Lifetime 2035 Fund | 27.35% |
| MFS Lifetime 2040 Fund | 40.44% |
| MFS Lifetime 2045 Fund | 34.17% |
| MFS Lifetime 2050 Fund | 37.49% |
| MFS Lifetime 2055 Fund | 37.83% |
| MFS Lifetime 2060 Fund | 41.16% |
The funds intend to pass through the maximum amount allowable as Section 163(j) Interest Dividends as defined in Treasury Regulation §1.163(j)-1(b).
| 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. |
| 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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1. Go to mfs.com.
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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
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 its 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. |
The Board of Trustees has appointed Ernst & Young LLP (“E&Y”) to serve as independent accountant to a series of the Registrant (each a “Fund” and collectively the “Funds”). The tables below set forth the audit fees billed to each Fund as well as fees for non-audit services provided to each 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 April 30, 2021 and 2020, audit fees billed to each Fund by E&Y were as follows:
| | | | | | | | |
| | | Audit Fees | |
| | 2021 | | | 2020 | |
Fees billed by E&Y: | | | | | | | | |
MFS Lifetime Income Fund | | | 33,004 | | | | 32,559 | |
MFS Lifetime 2020 Fund | | | 31,338 | | | | 30,916 | |
MFS Lifetime 2025 Fund | | | 30,642 | | | | 30,230 | |
MFS Lifetime 2030 Fund | | | 31,338 | | | | 30,916 | |
MFS Lifetime 2035 Fund | | | 30,642 | | | | 30,230 | |
MFS Lifetime 2040 Fund | | | 31,338 | | | | 30,916 | |
| | | | | | | | |
MFS Lifetime 2045 Fund | | | 30,642 | | | | 30,230 | |
MFS Lifetime 2050 Fund | | | 30,753 | | | | 30,339 | |
MFS Lifetime 2055 Fund | | | 30,642 | | | | 30,230 | |
MFS Lifetime 2060 Fund | | | 29,972 | | | | 29,569 | |
| | | | | | | | |
Total | | | 310,311 | | | | 306,135 | |
For the fiscal years ended April 30, 2021 and 2020, fees billed by E&Y for audit-related, tax and other services provided to each 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 | |
| | 2021 | | | 2020 | | | 2021 | | | 2020 | | | 2021 | | | 2020 | |
Fees billed by E&Y: | | | | | | | | | | | | | | | | | | | | | | | | |
To MFS Lifetime Income Fund | | | 0 | | | | 0 | | | | 5,575 | | | | 5,498 | | | | 1,152 | | | | 1,151 | |
To MFS Lifetime 2020 Fund | | | 0 | | | | 0 | | | | 5,575 | | | | 5,498 | | | | 1,085 | | | | 1,091 | |
To MFS Lifetime 2025 Fund | | | 0 | | | | 0 | | | | 5,463 | | | | 5,387 | | | | 1,090 | | | | 1,076 | |
To MFS Lifetime 2030 Fund | | | 0 | | | | 0 | | | | 5,575 | | | | 5,498 | | | | 1,157 | | | | 1,154 | |
To MFS Lifetime 2035 Fund | | | 0 | | | | 0 | | | | 5,463 | | | | 5,387 | | | | 1,087 | | | | 1,073 | |
To MFS Lifetime 2040 Fund | | | 0 | | | | 0 | | | | 5,575 | | | | 5,498 | | | | 1,113 | | | | 1,113 | |
To MFS Lifetime 2045 Fund | | | 0 | | | | 0 | | | | 5,463 | | | | 5,387 | | | | 1,061 | | | | 1,051 | |
To MFS Lifetime 2050 Fund | | | 0 | | | | 0 | | | | 5,550 | | | | 5,474 | | | | 1,063 | | | | 1,058 | |
To MFS Lifetime 2055 Fund | | | 0 | | | | 0 | | | | 5,463 | | | | 5,387 | | | | 1,033 | | | | 1,027 | |
To MFS Lifetime 2060 Fund | | | 0 | | | | 0 | | | | 5,499 | | | | 5,423 | | | | 1,007 | | | | 1,003 | |
Total fees billed by E&Y To above Funds: | | | 0 | | | | 0 | | | | 55,201 | | | | 54,437 | | | | 10,848 | | | | 10,797 | |
| | | | | | | | | | | | | | | | | | | | | | | | |
| | | Audit-Related Fees1 | | | Tax Fees2 | | | All Other Fees3 | |
| | 2021 | | | 2020 | | | 2021 | | | 2020 | | | 2021 | | | 2020 | |
Fees billed by E&Y: | | | | | | | | | | | | | | | | | | | | | | | | |
To MFS and MFS Related Entities of MFS Lifetime Income Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2020 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2025 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2030 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2035 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2040 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2045 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2050 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2055 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
To MFS and MFS Related Entities of MFS Lifetime 2060 Fund* | | | 1,783,260 | | | | 1,661,127 | | | | 0 | | | | 0 | | | | 107,150 | | | | 104,750 | |
| | | | | | | | |
| | | Aggregate Fees for Non-audit Services | |
| | 2021 | | | 2020 | |
Fees billed by E&Y: | | | | | | | | |
To MFS Lifetime Income Fund, MFS and MFS Related Entities# | | | 2,139,367 | | | | 1,956,526 | |
To MFS Lifetime 2020 Fund, MFS and MFS Related Entities# | | | 2,139,300 | | | | 1,956,466 | |
To MFS Lifetime 2025 Fund, MFS and MFS Related Entities# | | | 2,139,192 | | | | 1,956,340 | |
To MFS Lifetime 2030 Fund, MFS and MFS Related Entities# | | | 2,139,372 | | | | 1,956,529 | |
To MFS Lifetime 2035 Fund, MFS and MFS Related Entities# | | | 2,139,190 | | | | 1,956,337 | |
To MFS Lifetime 2040 Fund, MFS and MFS Related Entities# | | | 2,139,329 | | | | 1,956,488 | |
To MFS Lifetime 2045 Fund, MFS and MFS Related Entities# | | | 2,139,164 | | | | 1,956,315 | |
To MFS Lifetime 2050 Fund, MFS and MFS Related Entities# | | | 2,139,253 | | | | 1,956,409 | |
To MFS Lifetime 2055 Fund, MFS and MFS Related Entities# | | | 2,139,136 | | | | 1,956,291 | |
To MFS Lifetime 2060 Fund, MFS and MFS Related Entities# | | | 2,139,145 | | | | 1,956,303 | |
| * | 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 Funds (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 E&Y for non-audit services rendered to the Funds 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 under “All Other Fees” are fees for products and services provided by E&Y other than those reported under “Audit Fees,” “Audit-Related Fees” and “Tax Fees,” including fees for services related to review of internal controls and review of Rule 38a-1 compliance program. |
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 in each period between 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 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.
A schedule of investments of each series 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.
| (a) | File the exhibits listed below as part of this form. Letter or number the exhibits in the sequence indicated. |
| | (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: Code of Ethics 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 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) MFS SERIES TRUST XII
| | |
| By (Signature and Title)* | | /S/ DAVID L. DILORENZO |
| | David L. DiLorenzo, President |
Date: June 15, 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: June 15, 2021
| | |
| By (Signature and Title)* | | /S/ JAMES O. YOST |
| | James O. Yost, Treasurer (Principal Financial Officer and Accounting Officer) |
Date: June 15, 2021
| * | Print name and title of each signing officer under his or her signature. |
