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        MRGXX State Street Institutional U.S. Government Money Market Fund – Mercury Class

        Overview Performance Liquidity Holdings Documents How to Buy More Insights
        Trans NAV

        Trans NAV

        This amount is the net asset value per share ("NAV") of the Fund calculated using amortized cost. The Fund transacts (trades) using this price.
        $1.00
        MTM NAV

        MTM NAV

        Mark-to-Market : Daily determination of the current fair market value of a security or instrument for determining the NAV of a security or instrument, or a portfolio of securities/ instruments, based on prevailing prices in the market for a security or instrument. The mark-to-market may differ from the fair market value that can actually be obtained for a security or instrument in a market transaction.
        $0.9997
        as of Jun 24 2026
        Net Assets ($MM)
        $219,113.38
        as of Jun 24 2026
        WAM

        WAM

        WAM (Weighted Average Maturity) is a measure of a fund's sensitivity to interest rate movements utilizing the interest-rate reset date and not a security's stated final maturity.
        31
        WAL

        WAL

        WAL (Weighted Average Life) is a measure of a fund's sensitivity to credit spreads or liquidity conditions utilizing a security's stated final maturity date or the date of the next demand feature. WAL does not reflect changes in the interest rate reset date.
        82
        as of Jun 24 2026
        Daily Factor

        Daily Factor

        A decimal representing the portion of an annual yield earned in one day.
        0.000099500
        as of Jun 24 2026

        Yield quotations more closely reflect the current earnings of money market funds than the total return quotations. The performance data quoted represents past performance. Past performance does not guarantee future results. Investment return and principal value will fluctuate, so you may have a gain or loss when shares are sold. Current performance may be higher or lower than that quoted.

        Fund Objective

        The investment objective of State Street Institutional U.S. Government Money Market Fund is to seek to maximize current income, to the extent consistent with the preservation of capital and liquidity and the maintenance of a stable $1.00 per share net asset value ("NAV").

        Fund Information as of Jun 24 2026

        Ticker Symbol MRGXX
        Inception Date Jun 24 2026
        CUSIP 85749T178
        NAIC No
        Min. initial investment $25,000,000
        Net Expense Ratio 1 0.14%
        Moody's Fund Rating* Aaa-mf
        S&P Fund Rating* AAAm
        Fitch Fund Rating* AAAmmf
        Investment Manager SSGA Funds Management, Inc.
        Distributor State Street Global Advisors Funds Distributors, LLC
        Distribution Frequency Monthly

        Historical Yield

        < 2026 >
        Jan Feb Mar Apr
        May Jun Jul Aug
        Sep Oct Nov Dec
        Subsidized Yields†

        †The subsidized yield reflects the yield calculation with voluntary reduction currently in effect. Without the reduction returns would have been lower.

                 		Unsubsidized Yields
        Date Net Assets ($MM) Daily Factors

        Daily Factor

        A decimal representing the portion of an annual yield earned in one day.

                 		1 Day 7 Day SEC 7 Day Effective SEC 30 Day 1 Day 7 Day SEC 7 Day Effective SEC 30 Day
        Jun 24 2026 $219,113.38 0.000099500 3.63% - - - 3.55% - - -
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        No data available.

        Download: Yields

        The performance data quoted represents past performance. Past performance does not guarantee future results. Investment return and principal value will fluctuate, so you may have a gain or loss when shares are sold. Current performance may be higher or lower than that quoted.

        Average Annual Total Returns reflect the reinvestment of dividends, capital gains distributions, all fee waivers and expense reimbursements.

        Yield quotations more closely reflect the current earnings of money market funds than the total return quotations.

        The 7-day SEC yield is an annualized net yield that describes the annualized income earned over a 7-day period.

        The 7-day effective SEC yield is annualized net yield that describes the amount one is expected to earn over a 1-year period assuming that dividends are reinvested at the average rate of the last 7-days.

        Document

        Fund Documents

        Minimum Investment

        Min. initial investment $25,000,000

        To Purchase by Wire

        The Mercury share class is available exclusively to customers of Mercury Advisory, LLC, an SEC-registered investment adviser. Mercury Advisory makes the share class available through Mercury Treasury, its cash management solution for businesses. Mercury Advisory is a wholly owned subsidiary of Mercury Technologies Inc. To learn more about the Mercury share class, visit mercury.com/treasury. Mercury Advisory, LLC is not affiliated with State Street Investment Management.

         You may make initial or subsequent investments by wiring federal funds to State Street, by:

        1.) Telephoning the Customer Service Department at 866-392-0869 between 8:00 a.m. and 5:00 p.m., Eastern Standard Time, and stating:

        • Your account registration name, address and Social Security or tax identification number
        • The name of the fund in which the investment is to be made and the account number
        • The exact amount being wired

         2.) Instructing the wiring bank to wire federal funds to:

        State Street Bank and Trust Co.

        • One Congress Street
        • ABA# 0110-0002-8
        • DDA# 9904-631-0
        • Attn: State Street Institutional U.S. Government Money Market Fund (Mercury Class)
        • Account Number and Registration
        • Dollar Amount per Account (if one wire is to cover more than one purchase)

        Correspondence Information

        State Street Institutional Trust Funds
        Global Cash Business
        PO Box 219737
        Kansas City, MO
        64121-9737

        Brokerage Availability

        State Street Institutional Trust Funds are available through most major broker/dealer and supermarket platforms.

        If you are an investor advisor and have questions regarding platform availability, please call 800-997-7327. Otherwise, please call 877-521-4083.

        Trading Deadline Information

        SSIIT Stablecoin Reserves Fund 5:00 PM ET
        SSIIT Prime Retail Reserves Fund 4:00 PM ET
        SSIIT US Government Money Market Fund 5:00 PM ET
        SSIIT Treasury Money Market Fund 2:30 PM ET
        SSIIT Treasury Plus Money Market Fund 5:00 PM ET

        Beginning on 12/15/2017 the assets displayed are at the Portfolio level. Prior to this date the assets displayed were at the share class level.

        1Total Annual Fund Operating Expense Waivers. SSGA FM, as the investment adviser to each Fund is contractually obligated, through April 30, 2027 (i) to waive up to the full amount of the advisory fee payable by each Fund, and/or (ii) to reimburse a Fund for expenses to the extent that Total Annual Fund Operating Expenses (exclusive of non-recurring account fees, interest, taxes, extraordinary expenses, acquired fund fees, any class-specific expenses, such as distribution, shareholder servicing, sub-transfer agency and administration fees) exceed 0.07% of average daily net assets on an annual basis (the “Total Annual Fund Operating Expense Waiver”). The Total Annual Fund Operating Expense Waiver may not be terminated prior to April 30, 2027 with respect to any Fund except with approval of the Fund’s Board of Trustees.

        You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not a bank account and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor is not required to reimburse the Fund for losses, and you should not expect that the sponsor will provide financial support to the Fund at any time, including during periods of market stress.

        Holdings subject to change.

        † The subsidized yield reflects the yield calculation with voluntary reduction currently in effect. Without the reduction returns would have been lower.

        * All portfolio information provided is as of the date referenced, unless otherwise noted, and is subject to change. Ratings by S&P, Moody's, and Fitch apply to the credit quality of a portfolio and are not a recommendation to buy, sell or hold securities of a fund, are subject to change, and do not remove market risks associated with investments in the fund. For complete information on the methodology and definitions used by each rating agency, please visit the following websites; S&P- www.standardandpoors.com, Moody's- www.moodys.com, Fitch- www.fitchratings.com

        For institutional / professional investors use only.

         

        View More Information About Our Firm: FINRA's BrokerCheck

         

        State Street Global Advisors (SSGA) is now State Street Investment Management.  Please click here for more information.

         

        Investing involves risk including the risk of loss of principal. The whole or any part of this work may not be reproduced, copied or transmitted or any of its contents disclosed to third parties without SSGA’s express written consent.

         

        ETFs trade like stocks, are subject to investment risk, fluctuate in market value and may trade at prices above or below the ETFs net asset value. Brokerage commissions and ETF expenses will reduce returns.

         

        The S&P 500® Index is a product of S&P Dow Jones Indices LLC or its affiliates (“S&P DJI”) and have been licensed for use by State Street Global Advisors. S&P®, SPDR®, S&P 500®, US 500 and the 500 are trademarks of Standard & Poor’s Financial Services LLC (“S&P”); Dow Jones® is a registered trademark of Dow Jones Trademark Holdings LLC (“Dow Jones”) and has been licensed for use by S&P Dow Jones Indices; and these trademarks have been licensed for use by S&P DJI and sublicensed for certain purposes by State Street Global Advisors. The fund is not sponsored, endorsed, sold or promoted by S&P DJI, Dow Jones, S&P, their respective affiliates, and none of such parties make any representation regarding the advisability of investing in such product(s) nor do they have any liability for any errors, omissions, or interruptions of these indices.

         

        Distributor: State Street Global Advisors Funds Distributors, LLC (SSGA FD), Member FINRA and an indirect wholly owned subsidiary of State Street Corporation. References to State Street may include State Street Corporation and its affiliates. One Congress Street Boston, MA 02114. ALPS Distributors, Inc. (ALPS) is the distributor for SPY, MDY, and DIA, all unit investment trusts. SSGA FD and ALPS are not affiliated.

         

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        Nothing contained in or on the Site should be construed as a solicitation of an offer to buy or offer, or recommendation, to acquire or dispose of any security, commodity, investment or to engage in any other transaction. SSGA Intermediary Business offers a number of products and services designed specifically for various categories of investors. Not all products will be available to all investors. The information provided on the Site is not intended for distribution to, or use by, any person or entity in any jurisdiction or country where such distribution or use would be contrary to law or regulation.

         

        The information provided does not constitute investment advice and it should not be relied on as such. It should not be considered a solicitation to buy or an offer to sell a security. It does not take into account any investor's particular investment objectives, strategies, tax status or investment horizon.  You should consult your tax and financial advisor. All material has been obtained from sources believed to be reliable. There is no representation or warranty as to the accuracy of the information and State Street shall have no liability for decisions based on such information.

         

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        All information is from SSGA unless otherwise noted and has been obtained from sources believed to be reliable, but its accuracy is not guaranteed.  There is no representation or warranty as to the current accuracy, reliability or completeness of, nor liability for, decisions based on such information and it should not be relied on as such.

         

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        Information for Non-U.S. Investors:

         

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        Before investing in a fund, consider its investment objectives, risks, charges, and expenses. A prospectus (and/or summary prospectus) containing this and other information is available here or by calling 1-866-787-2257 (ETFs and Mutual Funds) or 1-877-521-4083 (Cash). Read it carefully.

         

        Not FDIC Insured * No Bank Guarantee * May Lose Value

         

        AdTrax Code: 6729648.4.1.AM.INST

        Expiration Date: November 30, 2026

         

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