MFS® U.S. Government Cash Reserve Fund

Effective February 27, 2009, new purchases into this fund have been suspended. Please see the prospectus for more information on purchase restrictions.

Holdings Characteristics

Holdings Based Portfolio - Fixed Income Level Data

As of 3/31/15

# of Bond Holdings
55
Average Coupon
n/a
Average Effective Duration
0.00 yrs
Average Effective Maturity
n/a
Yield to Worst
n/a

Performance Statistics

No data available

Top 10 Holdings

As of 3/31/15

Federal Home Loan Bank 0.055 Apr 01 15
FEDERAL HOME LOAN BANK - 0.075 APR 01 15
Us Treasury Bill 0.090 Jul 09 15
Us Treasury Bill 0.275 Jan 07 16
Federal Home Loan Bank 0.080 Apr 06 15
Federal Home Loan Bank 0.065 Apr 08 15
Federal Home Loan Bank 0.055 Apr 01 15
Federal Home Loan Bank 0.06 Apr 29 15
Federal Home Loan Bank 0.036 Apr 01 15
Federal Home Loan Bank 0.040 Apr 06 15

42.07% of total net assets

Total number of holdings: 55

Full and Historical Holdings
Monthly Fund Holdings

Portfolio Structure %

As of 3/31/15

Credit Quality %

As of 3/31/15

 
% of Total Net Assets

Important Characteristics Information

Portfolio characteristic data are based on unaudited net assets.

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

Ratings are assigned to portfolio securities utilizing ratings from Moody's, Fitch, and Standard & Poor's rating agencies and applying the following hierarchy: If all three agencies provide a rating, the middle rating (after dropping the highest and lowest ratings) is assigned; if two of the three agencies rate a security, the lower of the two is assigned. Cash and other portfolio assets that are not securities are not included in the categories mentioned above. Ratings are shown in the S&P scale. All ratings are subject to change.

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.

1 Cash and other assets are less liabilities.

Definitions

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: 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: 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.

Credit Quality: For all securities other than those specifically described below, ratings are assigned to underlying securities utilizing ratings from Moody's, Fitch, and Standard & Poor's rating agencies and applying the following hierarchy: If all three agencies provide a rating, the middle rating (after dropping the highest and lowest ratings) is assigned; if two of the three agencies rate a security, the lower of the two is assigned. Ratings are shown in the S&P and Fitch scale (e.g., AAA). All ratings are subject to change. U.S. Government includes securities issued by the U.S. Department of the Treasury. Federal Agencies includes rated and unrated U.S. Agency fixed-income securities, U.S. Agency MBS, and CMOs of U.S. Agency MBS. Other Not Rated includes fixed income securities which have not been rated by any rating agency. The fund itself has not been rated.

Yield to Worst: The weighted average yield-to-worst of all portfolio holdings. The yield-to-worst is computed by using the lower of either yield-to-maturity or the yield-to-call on every possible call date. Essentially the yield-to-worst is a bond's yield-to-maturity under the least desirable bond repayment pattern under the assumption that bond market yields are unchanged.

This publication is authorized for distribution only when preceded or accompanied by a prospectus, or summary prospectus, for the portfolio being offered. Consider the fund's investment objectives, risks, charges and expenses. Contact MFS or view online. Read it carefully.