MRGXX — State Street Institutional U.S. Government Money Market Fund
Data updated: 2026-10-16
MRGXX — State Street Institutional U.S. Government Money Market Fund. no sales load · since 2007 · Money Market. Holdings, fees, performance and SEC filings.
MRGXX Fund Overview
MRGXX — State Street Institutional U.S. Government Money Market Fund is a US mutual fund managed by SSGA Funds Management, Inc., categorised as Money Market. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Adviser: SSGA Funds Management, Inc.
- Trust: State Street Institutional Investment Trust
- Category: Money Market
- Inception date: October 17, 2007
- Ticker: MRGXX
- SEC CIK: 0001107414
- SEC series ID: S000010701
- Share class ID: C000276761
- FIGI: BBG021T8NRX5
- LEI: 549300BZ5TGIFZUZDZ37
About MRGXX
State Street Institutional U.S. Government Money Market Fund (MRGXX) seeks to maximize current income while preserving capital and liquidity and maintaining a stable $1.00 net asset value per share. It is a government money market fund that invests only in U.S. government obligations and agencies, along with repurchase agreements secured by U.S. government securities. The Fund invests substantially all of its assets in the U.S. Government Portfolio, a master-feeder structure.
MRGXX Holdings
Top 1 holdings of State Street Institutional U.S. Government Money Market Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| State Street U.S. Government Money Market Portfolio | 100.00% |
MRGXX Debt Constituents
No individual debt constituents are reported in State Street Institutional U.S. Government Money Market Fund's latest SEC N-PORT filing.
MRGXX Prospectus and SEC Filings
Official State Street Institutional U.S. Government Money Market Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
MRGXX Service Providers
Firms that manage, distribute, hold, administer and audit State Street Institutional U.S. Government Money Market Fund, as reported on SEC Form N-CEN, fiscal year ending December 31, 2025.
- Adviser: SSGA Funds Management, Inc.
- Distributor: State Street Global Advisors Funds Distributors, LLC
- Custodian: State Street Bank and Trust Company
- Transfer agent: SS&C GIDS, Inc.
- Administrator: SSGA Funds Management, Inc.
- Auditor: Ernst & Young LLP
- Securities lending agent: State Street Bank and Trust Company
Related Funds
Other Money Market funds tracked on ABC INVEST:
MRGXX: Frequently Asked Questions
Does MRGXX charge a sales load?
No. This share class (MRGXX) charges no sales load.
What are MRGXX's top holdings?
As of May 31, 2026, MRGXX held 1 positions. The largest are State Street U.S. Government Money Market Portfolio (100.00%). All MRGXX holdings
Who manages MRGXX and when did it launch?
MRGXX is managed by SSGA Funds Management, Inc.. It is a series of State Street Institutional Investment Trust. It launched on October 17, 2007.
Where can I find MRGXX's prospectus and SEC filings?
MRGXX's latest prospectus (497) was filed October 16, 2026. All 34 filings are linked on ABC INVEST and on SEC EDGAR (series S000010701). MRGXX SEC filings
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, and annual data from Form N-CEN.
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.