6 9

Active Core Plus Bond ETF

MFSB
$ 24.61
$0.05 As of 06/10/25
$ 24.59
$0.04 As of 06/10/25
$44M
As of 06/10/25

Active Core Plus Bond ETF

MFSB
$0.05 As of 06/10/25
$0.04 As of 06/10/25
As of 06/10/25
MFSB
$ 24.61
$0.05 As of 06/10/25
$ 24.59
$0.04 As of 06/10/25
$44M
As of 06/10/25

Investment Objective

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

Investment Focus

Through a collaborative process, portfolio managers set the strategy's risk budget and work with analysts to select securities

US core plus bond strategy that provides exposure to the broad U.S. bond market with a bias towards credit markets

Uses a full suite of tools to drive alpha generation, while seeking to add value primarily through sector and quality allocation and security selection decisions

Fund Information

  • Fund Commencement 12/05/2024
  • Net Assets ($ M) As of 06/10/25 $44.26
  • Fiscal Year End FEBRUARY
  • Benchmark

    Bloomberg U.S. Aggregate Bond Index measures the U.S. bond market.

    Bloomberg U.S. Aggregate Bond Index
  • Net Asset Value (NAV) As of 06/10/25 $24.59
  • Most Recent NAV Change As of 06/10/25 $0.04 | 0.15%
  • Market Price (MP) As of 06/10/25 $24.61
  • Most Recent Market Price Change As of 06/10/25 $0.05 | 0.18%
  • Premium / Discount As of 06/10/25

    Premium/Discount indicates whether a fund is trading above (premium) or below (discount) its Net Asset Value (NAV).

    0.09%
  • 30 Day Median Bid / Ask Spread As of 06/09/25

    The median bid-ask spread is calculated by identifying national best bid and national best offer (NBBO) for each Fund as of the end of each 10 second interval during each trading day of the last 30 calendar days and dividing the difference between each such bid and offer by the midpoint of the NBBO. The median of those values is the median bid-ask spread, which is identified and posted on each business day.

    0.08%
  • Expense Ratio

    Gross Expense Ratio: The Gross Expense Ratio is the fund's total operating expense ratio from the fund's most recent prospectus.

    0.34%
  • Exchange NYSE

Managers

Top 10 Holdings

As of 04/30/25

  • UST Bond 2Yr Future JUN 30 25
  • US Treasury Note 4.125% OCT 31 29
  • US Treasury Bond 4.625% NOV 15 44
  • US Treasury Note 4.125% OCT 31 26
  • US Treasury Bond 4.5% NOV 15 54
  • US Treasury Bond 4.5% FEB 15 44
  • Arbor Realty Commercial Real Estate Notes 2022-FL1 Ltd 144A 2.35% JAN 15 37
  • AutoNation Inc 5.89% MAR 15 35
  • TCW CLO 2020-1 Ltd 144A 5.869% APR 20 34
  • Columbia Cent CLO 31 Ltd 144A 6.119% APR 20 34

Important Risk Considerations

Exchange-Traded Funds (ETFs) trade like stocks, are subject to investment risk, and will fluctuate in market value. Shares of ETFs are bought and sold at market price, not NAV, and are not individually redeemed from the fund. The market price at the time of sale may be higher or lower than the fund’s NAV, and any applicable brokerage commissions will reduce returns. There can be no guarantee that an active market for the funds will develop or be maintained.

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.

International: Investments in foreign markets can involve greater risk and volatility than U.S. investments because of adverse market, currency, economic, industry, political, regulatory, geopolitical, or other conditions.

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.

High Yield: Investments in below investment grade quality debt instruments can be more volatile and have greater risk of default, or already be in default, than higher-quality debt instruments.

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

Performance

Average Annual Total Returns

Average Annual Total Returns (%)

Market price returns are calculated using the closing price reported by the exchange.

These results represent the percent change in net asset value.
Monthly | Quarterly

As of 03/31/25

(*YTD Updated As of 06/09/25 , subject to revision and not annualized.)

    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.

     

    1

    YTD (year-to-date return): For the period from January 1 of the current year to the date shown, or from inception date if first offered after January 1 of the current year. 

    When applicable, returns for less than one year are not annualized, but calculated as cumulative total returns. 

    MORNINGSTAR RATING
    Morningstar ratings are based on risk adjusted performance.
    OVERALL
    NA
    OVERALL MORNINGSTAR RATING
    Morningstar ratings are based on risk adjusted performance.
    NA
    THREE YEAR
    NA
    FIVE YEAR
    NA
    TEN YEAR
    NA

    Important Performance Information

    All results are historical and assume the reinvestment of dividends and capital gains.

    Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable. All results assume the reinvestment of dividends and capital gains.

    Annual Rate of Return

    Annual Rate of Return (%)

    Market price returns are calculated using the closing price reported by the exchange.

    No data currently available

    annual rate of return table
    Pricing & Distributions

    Premium / Discount (%)

    The line graph and table below display historical data regarding the differences between the daily closing market price of the fund - as determined by the fund’s listing exchange - and the fund’s NAV. The Vertical Axis displays the premium/discount as a percentage of NAV, while the Horizontal Axis displays the corresponding date.

    The table below shows the number of trading days in which the ETF traded at a premium (greater than), discount (less than) or at its NAV.

    Number of Days at a Premium / Discount

    Calendar Year
    2024
    Q1 2025 Q2 2025 Q3 2025 Q4 2025
    Premium

    Premium: When the fund's market price is higher than its Net Asset Value.

    18 55 35 - -
    NAV
    0 0 0 - -
    Discount

    Discount: When the fund's market price is lower than its Net Asset Value.

    0 5 14 - -

    Pricing History

    • MP at Close of Trading on:  06/10/25
    • Market Price (MP):  $24.61
    Maximum data displayed is for the most recent 10 years
    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 MP Table
    MP at Close of Trading on Market Price (MP)
    No Data Available

    Distribution Rates (%)

    The distribution rates are computed by annualizing the current distribution rate per share (excluding short-term capital gains), and dividing the result by the public offering price (for the distribution rate including sales charge) or net asset value (for the distribution rate not including sales charge) at the end of the business day.

    As of 05/31/25

    Charges Distribution Rate
    NAV 4.95

    30-Day SEC Yield (%)
    The fund's 30-day yield is based on the yield of a fund's investments over a 30-day period and not on the dividend paid by the fund, which may differ.

    As of 05/31/25

    Wavier Yield Value
    At NAV 5.06

    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.

    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.

    Long-term Capital Gain The gain on the sale of a capital asset where the holding period was more than 12 months and the profit was subject to the long-term capital gains tax. (Source: Barron's Dictionary of Finance and Investment Terms)

    Short-term Capital Gain For tax purposes the profit realized from the sale of securities or other capital assets held for less than 12 months. Short-term gains are taxable at ordinary income rates to the extent they are not reduced by offsetting capital losses. (Source: Barron's Dictionary of Finance and Investment Terms)

    Updated Daily As of 06/10/25

    Record Date Ex-Date Payable Date Type of Earnings Rate per Share (US$)
    05/30/25 05/30/25 06/02/25 Dividend 0.10145
    04/30/25 04/30/25 05/01/25 Dividend 0.10294
    03/31/25 03/31/25 04/01/25 Dividend 0.09576
    02/28/25 02/28/25 03/03/25 Dividend 0.09375
    01/31/25 01/31/25 02/03/25 Dividend 0.09181
    12/30/24 12/30/24 12/31/24 Dividend 0.09131
    Past performance is no guarantee of future results. Please consult your tax advisor for further information.

    Portfolio & Holdings Information
    Portfolio characteristic data are based on unaudited net assets.

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

    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.

    Weighted average yield-to-worst of all portfolio holdings excluding cash & derivatives. Yield-to-worst is the annual estimate of the portfolio yield considering factors such as call provisions, prepayments, and other features that may affect a bond's cash flow; and assumes no default. It is an estimated characteristic at a point in time and is not a measure of portfolio performance.

    As of 04/30/25

    Data table of holding characteristics
    characteristics Fixed Earning
    Number of Issues 150
    Number of Issuers 122
    Average Coupon 4.96
    Average Effective Duration 6.06 yrs
    Average Effective Maturity 9.01 yrs
    Yield To Worst 5.35%

    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 04/30/25

    Benchmark
    Bloomberg U.S. Aggregate Bond Index
    Performance Statistics Table
    10 Yr. 5 Yr. 3 Yr.
    Alpha n/a n/a n/a
    Beta n/a n/a n/a
    R-squared n/a n/a n/a
    Standard Deviation % n/a n/a n/a
    Sharpe Ratio n/a n/a n/a
    Tracking Error n/a n/a n/a
    Information Ratio n/a n/a n/a
    Treynor Ratio n/a n/a n/a
    Downside Capture % n/a n/a n/a
    Upside Capture % n/a n/a n/a

    Top 10 Holdings

    As of 04/30/25

    • UST Bond 2Yr Future JUN 30 25
    • US Treasury Note 4.125% OCT 31 29
    • US Treasury Bond 4.625% NOV 15 44
    • US Treasury Note 4.125% OCT 31 26
    • US Treasury Bond 4.5% NOV 15 54
    • US Treasury Bond 4.5% FEB 15 44
    • Arbor Realty Commercial Real Estate Notes 2022-FL1 Ltd 144A 2.35% JAN 15 37
    • AutoNation Inc 5.89% MAR 15 35
    • TCW CLO 2020-1 Ltd 144A 5.869% APR 20 34
    • Columbia Cent CLO 31 Ltd 144A 6.119% APR 20 34
    The portfolio is actively managed, and current holdings may be different.
    Exposures

    Portfolio Structure (%)

    As of 04/30/25

    • U.S. Treasuries
      53.06
    • Investment Grade Corporates
      29.15
    • Collateralized Loan Obligations
      12.07
    • High Yield Corporates
      7.78
    • Residential Mtg Backed
      4.17
    • Emerging Markets Debt
      3.24
    • Commercial Mtg Backed
      2.21
    • Asset Backed
      1.89
    • Non-U.S. Sovereigns
      0.52
    • Mortgage Backed
      0.13
    • Cash & Cash Equivalents
      0.63
    • Other1
      -14.86

    Credit Quality (%)

    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 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. The index rating methodology may differ.

    As of 04/30/25

    • % of Total Net Assets

    • U.S. Government
      38.21
    • Federal Agencies
      0.13
    • AAA
      10.53
    • AA
      4.77
    • A
      11.94
    • BBB
      22.77
    • BB
      5.89
    • B
      4.29
    • CCC
      0.84
    • Other Not Rated
      0.63
    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.

    1Other. Other consists of: (i) currency derivatives and/or (ii) any derivative offsets.

    Fees

    • 0.34

      Expense Ratio

      Gross Expense Ratio: The Gross Expense Ratio is the fund's total operating expense ratio from the fund's most recent prospectus.

    Resources

    Product Resources

    Fact Sheets are available approximately 15 days after quarter end.

    Shareholder Reports

    Shareholder Reports

    Click here to access the following:
    • Semiannual Report
    • Annual Report
    • Financial and Other information
    • First Quarter Holdings
    • Third Quarter Holdings
    Product Literature

    Product Literature

    MFS Active ETFs: Exploring what Active ETFs can do for you

    As of May 28, 2025

    Client facing brochure that provides a high-level overview about active ETFs and MFS's ETF lineup.

    Expanding Client Choice With MFS Active ETFs

    As of Dec 04, 2024

    Flyer that provides key information about the MFS Active ETF lineup including ticker, expense ratio and benchmark.

    This website is a general communication and is provided for informational and/or educational purposes only. None of the content should be viewed as a suggestion that you take or refrain from taking any action nor as a recommendation for any specific investment product, strategy, plan feature or other such purpose. Your use of this website indicates that you agree with the intended purpose. Prior to making any investment or financial decision, you should seek individualized advice from a personal financial, tax, and other professionals who are able to provide advice in the context of your particular financial situation.

    The information provided on this page should be read in conjunction with the fund's prospectus or summary prospectus for the portfolio being offered, which are available online here or by contacting MFS. Consider the fund's investment objectives, risks, charges, and expenses, and otherwise read these documents carefully before you invest. Shares of the funds are not FDIC-insured and are not deposits or other obligations of, or guaranteed by, any bank. Shares of the funds involve investment risk, including possible loss of principal.

    MFS registered investment products are offered through MFS® Fund Distributors, Inc., Member SIPC, 111 Huntington Avenue, Boston, MA 02199.

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