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6 9

U.S. Government Bond Fund

DISCLOSURES

THIS INFORMATION IS FOR MARKETING PURPOSES ONLY

Please note that this is an actively managed product. 

Class I shares are only available to certain qualifying institutional investors.

  • Fixed Income
 LU0219455440
$ 161.36
$0.08 As of 17-Mar-25
US$324M
As of 28-Feb-25

U.S. Government Bond Fund

  • Fixed Income
LU0219455440
$0.08 As of 17-Mar-25
As of 28-Feb-25
  • Fixed Income
 LU0219455440
$ 161.36
$0.08 As of 17-Mar-25
$324M
As of 28-Feb-25
  • Overview

    INVESTMENT OBJECTIVE

    Seeks total return with an emphasis on current income, but also considering capital appreciation, measured in US dollars.

    INVESTMENT FOCUS

    Aims to provide investors with an investment grade fixed-income portfolio

    Employs sector rotation among various government entities agencies and instrumentalities

    Invests in U.S. government and agency securities based on macroeconomic indicators, valuations, and market environment

    Important Risk Considerations

    The fund may not achieve its objective and/or you could lose money on your investment in the fund.

    Bond: Investments in debt instruments may decline in value as the result of, or perception of, declines in the credit quality of the issuer, borrower, counterparty, or other entity responsible for payment, underlying collateral, or changes in economic, political, issuer-specific, or other conditions. Certain types of debt instruments can be more sensitive to these factors and therefore more volatile. In addition, debt instruments entail interest rate risk (as interest rates rise, prices usually fall). Therefore, the portfolio's value may decline during rising rates. Portfolios that consist of debt instruments with longer durations are generally more sensitive to a rise in interest rates than those with shorter durations. At times, and particularly during periods of market turmoil, all or a large portion of segments of the market may not have an active trading market. As a result, it may be difficult to value these investments and it may not be possible to sell a particular investment or type of investment at any particular time or at an acceptable price. The price of an instrument trading at a negative interest rate responds to interest rate changes like other debt instruments; however, an instrument purchased at a negative interest rate is expected to produce a negative return if held to maturity.

    Derivatives: Investments in derivatives can be used to take both long and short positions, be highly volatile, involve leverage (which can magnify losses), and involve risks in addition to the risks of the underlying indicator(s) on which the derivative is based, such as counterparty and liquidity risk.

    Mortgage-backed: Mortgage-backed securities can be subject to prepayment and/or extension and therefore can offer less potential for gains and greater potential for loss.

    Geographic: Because the portfolio may invest a substantial amount of its assets in issuers located in a single country or in a limited number of countries, it may be more volatile than a portfolio that is more geographically diversified.

    U.S. Government Credit: U.S. government securities not supported as to the payment of principal or interest by the U.S. Treasury are subject to greater credit risk than are U.S. government securities supported by the U.S. Treasury.

    Please see the prospectus for further information on these and other risk considerations.

    Fund Information

    • Fund Inception 26-Sep-2005
    • Net Assets (US$ M) As of 28-Feb-25 US$324.78
    • Fiscal Year End JANUARY
    • SFDR Classification

      Article 6: Integrates sustainability risks into the investment process.

      Article 8: Systematically promotes a stated environmental or social characteristic and provides enhanced disclosure accordingly.

      Article 9: Typically for "impact" funds, which have a dual objective of financial return and specific environmental or social outcomes.
      Article 6
    • Benchmark Bloomberg U.S. Government/Mortgage Index

    Share Class Information

    • Class Inception 26-Sep-2005
    • Net Asset Value (NAV) As of 17-Mar-25 $161.36
    • Most Recent NAV Change As of 17-Mar-25 $0.08 | 0.05%
    • ISIN LU0219455440
    • SEDOL B08N721
    • WKN A0ETM1
    • Bloomberg MUSGIU1 LX
    • CUSIP L63662164
    • Maximum Sales Charge --
    • Benchmark Bloomberg U.S. Government/Mortgage Index

    MANAGERS

    Geoffrey Schechter, CFA, CPA
    Geoffrey Schechter, CFA, CPA

    Portfolio Manager

    19 YEARS WITH PORTFOLIO

    Jake Stone, CFA
    Jake Stone, CFA

    Portfolio Manager

    7 YEARS WITH PORTFOLIO

    Rob Hall
    Rob Hall

    Institutional Portfolio Manager

    15 YEARS WITH PORTFOLIO

    Effective September 30, 2025, Geoff Schechter will retire from MFS and relinquish his portfolio management responsibilities.

    Top 10 Holdings

    As of 28-Feb-25
    • UST Bond 5Yr Future JUN 30 25
    • UST Bond 2Yr Future JUN 30 25
    • UST Bond 10Yr Future JUN 18 25
    • UMBS 30 Year 2.5
    • UMBS 30 Year 2.0
    • UST 10Yr Ultra Bond Future JUN 18 25
    • UMBS 30 Year 3.0
    • US Treasury Note 2.875% MAY 15 28
    • US Treasury Note 3.25% JUN 30 29
    • US Treasury Note 2.625% JUL 31 29
    Full and Historical Holdings
    The portfolio is actively managed, and current holdings may be different.
  • Performance

    Performance

    Collapse Expand
    12 Month Total Returns

    12 Month Total Returns (%)

    12 Month Total Returns (%)

    As of 28-Feb-25 [updated monthly]
    These results represent the percent change in net asset value.
    *YTD Updated Daily as of 17-Mar-25, subject to revision and not annualized.
    12 month period ending:
    28-Feb-21
    or Life

    Life performance is only shown when 5 years of performance is not available.
    		28-Feb-22 28-Feb-23 28-Feb-24 28-Feb-25 YTD % * Class Inception
    Class I1 Shares, US Dollars at NAV 0.59 -2.21 -9.74 1.65 5.47 2.36 26-Sep-2005
    Bloomberg U.S. Government/Mortgage Index 0.63 -2.43 -9.61 2.31 5.53 - -
    12 month period ending: Class I1 Shares, US Dollars at NAV
    28-Feb-21 or Life

    Life performance is only shown when 5 years of performance is not available.
    		0.59
    28-Feb-22 -2.21
    28-Feb-23 -9.74
    28-Feb-24 1.65
    28-Feb-25 5.47
    YTD % * 2.36
    Class Inception 26-Sep-2005 26-Sep-2005

    Performance results reflect ongoing charges and any applicable expense subsidies and waivers in effect during the periods shown. All historic results assume distributions within the fund and/or the share class are reinvested. 

    Past performance is not a reliable indicator for future results. All financial investments involve an element of risk. The value of investments may rise and fall so you may get back less than originally invested.

    Investors should consider the risks, including lower returns, related to currency movements between their investing currency and the portfolio's base currency, if different.

    Important Performance Information

    Class I1 Roll-Up shares do not pay distributions to shareholders. 

    Average Annual Total Returns

    Average Annual Total Returns (%)

    Average Annual Total Returns (%)

    These results represent the percent change in net asset value.
    Updated monthly as of 28-Feb-25
    *YTD Updated Daily as of 17-Mar-25, subject to revision and not annualized.
     
    Life
    2.52
    -
    10 Yr.
    0.78
    1.07
    5 Yr.
    -0.98
    -0.85
    3 Yr.
    -1.09
    -0.81
    1 Yr.
    5.47
    5.53
    1 Mo.
    2.28
    2.29
    YTD*
    2.36
    -

      Performance results reflect ongoing charges and any applicable expense subsidies and waivers in effect during the periods shown. All historic results assume distributions within the fund and/or the share class are reinvested. 

      Past performance is not a reliable indicator for future results. All financial investments involve an element of risk. The value of investments may rise and fall so you may get back less than originally invested.

      Investors should consider the risks, including lower returns, related to currency movements between their investing currency and the portfolio's base currency, if different.

      The source for all fund data is MFS. Source for benchmark performance: SPAR, FactSet Research Systems Inc.

      The Fund's benchmark is indicated for performance comparison only. 

      MORNINGSTAR RATING
      Morningstar View Overall Morningstar Ratings Information
      OVERALL
      Out Of Funds
      NA
      OVERALL MORNINGSTAR RATING
      NA
      THREE YEAR
      Out Of Funds
      NA
      FIVE YEAR
      Out Of Funds
      NA
      TEN YEAR
      Out Of Funds
      NA

      Important Performance Information

      Class I1 Roll-Up shares do not pay distributions to shareholders. 

      Annual Rate of Return

      Annual Rate of Return (%)

      Annual Rate of Return (%)

      As of 31-Dec-24 Benchmark: Bloomberg U.S. Government/Mortgage Index
      annual rate of return table
      Life

      Life performance as of  28-Feb-25
      		2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
      At NAV 2.52 0.46 0.72 2.18 0.41 6.25 6.42 -1.90 -12.11 3.90 0.72
      Bloomberg U.S. Government/Mortgage Index - 1.13 1.31 2.37 0.93 6.63 6.36 -1.77 -12.12 4.45 0.83
      At NAV Bloomberg U.S. Government/Mortgage Index
      2024 0.72 0.83
      2023 3.9 4.45
      2022 -12.11 -12.12
      2021 -1.9 -1.77
      2020 6.42 6.36
      2019 6.25 6.63
      2018 0.41 0.93
      2017 2.18 2.37
      2016 0.72 1.31
      2015 0.46 1.13
      Life

      Life performance as of  28-Feb-25
      		2.52 -

      Performance results reflect ongoing charges and any applicable expense subsidies and waivers in effect during the periods shown. All historic results assume distributions within the fund and/or the share class are reinvested. 

      Past performance is not a reliable indicator for future results. All financial investments involve an element of risk. The value of investments may rise and fall so you may get back less than originally invested.

      Investors should consider the risks, including lower returns, related to currency movements between their investing currency and the portfolio's base currency, if different.

      Important Performance Information

      Class I1 Roll-Up shares do not pay distributions to shareholders. 

      Pricing & Distributions

      Pricing History

      • NAV at Close of Trading on:  17-Mar-25
      • Net Asset Value (NAV):  $161.36
      • Change ($) (since 14-Mar-25):  0.08
      • Change (%) (since 14-Mar-25):  0.05
      • Market Price (MP): 
      Maximum data displayed is for the most recent 10 years
      Historical NAV Lookup
      Enter date for which you wish to obtain a Historical NAV for this fund

      Historical NAV may not be available for all dates.

      Historical MP Lookup
      Enter date for which you wish to obtain a Historical MP for this fund

      Historical MP may not be available for all dates.

      Historical Exit Price Table
      NAV at Close of Trading on Net Asset Value (NAV)
      No Data Available

      Swing Pricing

      Distributions
      The Record Date is the date on which a fund declares a distribution. To receive the distribution, an investor must be a shareholder of record on that date.

      The Payable Date is the date on which the distribution is paid to shareholders.

      Dividend Rate per Share is the amount of dividend that a shareholder will receive for each share held. It can be calculated by taking the total amount of dividends paid and dividing it by the total shares outstanding.

      Dividend Reinvestment at NAV is the automatic reinvestment of shareholder dividends in more shares at net asset value.

      Ex-Dividend Date is the date on which a fund goes ex-dividend. The interval between the announcement and the payment of the next dividend. An investor must own the fund before the ex-dividend date to be eligible for the dividend payout.

      There are no distributions for this share class or distributions are currently not available
    • Portfolio & Holdings Information

      Portfolio & Holdings Information

      Portfolio characteristic data are based on unaudited net assets.

      The portfolio is actively managed, and current holdings may be different.

      • Select All
      • Holding Characteristics
      • Performance Statistics
      • Top 10 Holdings
      • Credit Quality (%)
      • Currency Weights %
      Collapse Expand
      Sector, Holding & Characterstics

      Holding Characteristics
      Average Coupon: Average Coupon is the equivalent exposure weighted coupon of all interest bearing instruments as a percent of the total equivalent exposure of all fixed income holdings, including short term and interest rate derivatives which have coupons. Coupons are netted for securities with a payable and receivable leg. Non-accruing securities are treated as having a coupon equal to zero.

      Average Effective Duration is a measure of how much a bond's price is likely to fluctuate with general changes in interest rates, e.g., if rates rise 1.00%, a bond with a 5-year duration is likely to lose about 5.00% of its value.

      Average Effective Maturity is a weighted average of maturity of the bonds held in a portfolio, taking into account any prepayments, puts, and adjustable coupons which may shorten the maturity. Longer-maturity funds are generally considered more interest-rate sensitive than shorter maturity funds.

      Yield to Worst: For fixed income securities, yield is the discount rate that equilibrates the net present value of all future cash flows to the current market value. Average Yield is the equivalent exposure weighted average yield to worst which is typically the lowest of the yields to each potential call or put or the yield to maturity, whichever is worst.

      The Average Credit Quality (ACQR) is a market weighted average (using a linear scale) of securities included in the rating categories. For all securities other than those described below, ratings are assigned utilizing ratings from Moody’s, Fitch, and Standard & Poor’s and applying the following hierarchy: If all three agencies provide a rating, the consensus rating is assigned if applicable or the middle rating if not; if two of the three agencies rate a security, the lower of the two is assigned. If none of the 3 Rating Agencies above assign a rating, but the security is rated by DBRS Morningstar, then the DBRS Morningstar rating is assigned. If none of the 4 rating agencies listed above rate the security, but the security is rated by the Kroll Bond Rating Agency (KBRA), then the KBRA rating is assigned. Other Not Rated includes other fixed income securities not rated by any rating agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change. The portfolio itself has not been rated by any rating agency. The credit quality of a particular security or group of securities does not ensure the stability or safety of an overall portfolio. The quality ratings of individual issues/issuers are provided to indicate the credit-worthiness of such issues/issuer and generally range from AAA, Aaa, or AAA (highest) to D, C, or D (lowest) for S&P, Moody’s, and Fitch respectively.

      As of 28-Feb-25
      Data table of holding characteristics
      characteristics Fixed Earning
      Number of Issues 646
      Number of Issuers 46
      Average Coupon 3.74
      Average Effective Duration 6.18 yrs
      Average Effective Maturity 6.65 yrs
      Average Credit Quality of Rated Securities AA+

      Performance Statistics

      Alpha is a measure of the portfolio's risk-adjusted performance. When compared to the portfolio's beta, a positive alpha indicates better-than-expected portfolio performance and a negative indicates alpha worse-than-expected portfolio performance.

      Beta is a measure of the volatility of a portfolio relative to the overall market. A beta less than 1.0 indicates lower risk than the market; a beta greater than 1.0 indicates higher risk than the market. It is most reliable as a risk measure when the return fluctuations of the portfolio are highly correlated with the return fluctuations of the index chosen to represent the market.

      Information ratio is a measure of consistency in excess return. It is calculated by taking the annualized excess return over a benchmark and dividing it by the annualized standard deviation of excess return.

      R squared represents the percentage of the portfolio's movements that can be explained by the general movements of the market.  Index portfolios will tend to have values very close to 100.  R squared is not a measure of performance.

      The Sharpe Ratio is a risk-adjusted measure calculated to determine reward per unit of risk. It uses a standard deviation and excess return. The higher the Sharpe Ratio, the better the portfolio's historical risk-adjusted performance.

      Standard Deviation is an indicator of the portfolio's total return volatility, which is based on a minimum of 36 monthly returns. The larger the portfolio's standard deviation, the greater the portfolio's volatility.

      Tracking error is the standard deviation of a portfolio's excess returns. Excess returns are a portfolio's return minus the benchmark's annualized return.

      Treynor Ratio: Treynor Ratio is a risk adjusted measure of performance. It is the ratio of the annualized excess return of the portfolio over the risk free rate for a given period divided by the Beta of the portfolio versus its benchmark for the same period. It measures the amount of excess return over the risk free rate earned per unit of systematic risk (beta) assumed.

      Upside and downside capture is a measure of how well a manager was able to replicate or improve on phases of positive benchmark returns, and how badly the manager was affected by phases of negative benchmark returns. Upside capture ratio for a portfolio is calculated by taking the portfolio's return during periods when the benchmark had a positive return and dividing it by the benchmark return during that same period. Downside capture ratio is calculated by taking the portfolio's return during the periods of negative benchmark performance and dividing it by the benchmark return for that period.

      Updated Monthly As of 28-Feb-25
      Benchmark
      Bloomberg U.S. Government/Mortgage Index
      Performance Statistics Table
      10 Yr. 5 Yr. 3 Yr.
      Alpha -0.28 -0.15 -0.29
      Beta 0.98 0.98 1.00
      R-squared 99.27 99.24 99.73
      Standard Deviation % 4.68 5.93 7.42
      Sharpe Ratio -0.22 -0.60 -0.72
      Tracking Error 0.41 0.53 0.38
      Information Ratio -0.72 -0.25 -0.73
      Treynor Ratio -1.05 -3.61 -5.33
      Downside Capture % 100.97 99.57 101.73
      Upside Capture % 96.23 97.74 99.18

      Top 10 Holdings

      As of 28-Feb-25
      • UST Bond 5Yr Future JUN 30 25
      • UST Bond 2Yr Future JUN 30 25
      • UST Bond 10Yr Future JUN 18 25
      • UMBS 30 Year 2.5
      • UMBS 30 Year 2.0
      • UST 10Yr Ultra Bond Future JUN 18 25
      • UMBS 30 Year 3.0
      • US Treasury Note 2.875% MAY 15 28
      • US Treasury Note 3.25% JUN 30 29
      • US Treasury Note 2.625% JUL 31 29

      Full and Historical Holdings

      The portfolio is actively managed, and current holdings may be different.
      Exposures

      Credit Quality (%)

      The Average Credit Quality (ACQR) is a market weighted average (using a linear scale) of securities included in the rating categories. For all securities other than those described below, ratings are assigned utilizing ratings from Moody’s, Fitch, and Standard & Poor’s and applying the following hierarchy: If all three agencies provide a rating, the consensus rating is assigned if applicable or the middle rating if not; if two of the three agencies rate a security, the lower of the two is assigned. If none of the 3 Rating Agencies above assign a rating, but the security is rated by DBRS Morningstar, then the DBRS Morningstar rating is assigned. If none of the 4 rating agencies listed above rate the security, but the security is rated by the Kroll Bond Rating Agency (KBRA), then the KBRA rating is assigned. Other Not Rated includes other fixed income securities not rated by any rating agency. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change. The portfolio itself has not been rated by any rating agency. The credit quality of a particular security or group of securities does not ensure the stability or safety of an overall portfolio. The quality ratings of individual issues/issuers are provided to indicate the credit-worthiness of such issues/issuer and generally range from AAA, Aaa, or AAA (highest) to D, C, or D (lowest) for S&P, Moody’s, and Fitch respectively.

      As of 28-Feb-25
      • % of Total Net Assets
      • U.S. Government
        25.22
      • Federal Agencies
        67.50
      • AAA
        8.68
      • AA
        0.37
      • A
        0.19
      • BBB
        0.03
      • Other Not Rated
        -1.99

      Currency Weights (%)

      As of 28-Feb-25
      • United States Dollar
        100.00
      Important Characteristics Information
      The portfolio is actively managed, and current holdings may be different.

      Portfolio characteristics are based on equivalent exposure, which measures how a portfolio's value would change due to price changes in an asset held either directly or, in the case of a derivative contract, indirectly. The market value of the holding may differ.

      *Short positions, unlike long positions, lose value if the underlying asset gains value.

    • Resources

      Resources

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      Product Resources

      Fact Sheets are available approximately 15 days after month end.


      Quarterly Portfolio Review is available approximately 25 days after quarter end.


      Full Holdings available approximately 25 days after month end.


      Monthly Portfolio Review available approximately 15 days after month end.


      Product Presentation available approximately 25 days after quarter end.


      Available approximately 15 or 25 days after month end

      Quarterly Investment Update available approximately 25 days after quarter end.


      Monthly Investment Update available approximately 25 days after month end.
      Fund Documents & Fact Sheets

      Fund Documents & Fact Sheets

      Click here to view fund documents such as Key Investor Documents, Complete Prospectus, Annual Report, Semi Annual Report, Swing Pricing, and Fact Sheets. Some of these documents are available in other languages.
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