GMMF Institutional Ownership & Shareholders
ISHARES GOVT MMKT ETF (GMMF) is currently held by 18 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $80.42M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Mrwm Advisors, Llc is currently the largest disclosed institutional shareholder of GMMF tracked by InsiderSet, reporting ownership valued at approximately $42.57M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $42.56M, representing an estimated loss of -0.03% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 98% of the total disclosed GMMF value among the investors covered in this analysis. Major shareholders include Mrwm Advisors, Llc, Blackrock, Inc., Hummer Financial Advisory Services Inc, and several other long-term asset managers with concentrated positions in ISHARES GOVT MMKT ETF (GMMF).
This page ranks the largest institutional GMMF shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
18
Total Reported Value
$80.42M
Largest Holder
Mrwm Advisors, Llc
Largest Position
$42.57M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
19
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Mrwm Advisors, Llc | 17.50% | 424,326 | $42,568,384 | $42,555,655 | -$12,729 | -0.03% | |
| Blackrock, Inc. | 0.00% | 250,000 | $25,080,000 | $25,072,500 | -$7,500 | -0.03% | |
| Hummer Financial Advisory Services Inc | 2.03% | 31,000 | $3,109,638 | $3,108,990 | -$648 | -0.02% | |
| Citadel Advisors Llc | 0.00% | 27,109 | $2,719,575 | $2,718,762 | -$813 | -0.03% | |
| Tower Research Capital Llc (Trc) | 0.06% | 24,078 | $2,415,505 | $2,414,783 | -$722 | -0.03% | |
| Goldman Sachs Group Inc | 0.00% | 9,625 | $965,580 | $965,291 | -$289 | -0.03% | |
| Sapient Capital Llc | 0.01% | 7,730 | $775,403 | $775,242 | -$161 | -0.02% | |
| Granite Bay Wealth Management, Llc | 0.07% | 6,314 | $633,000 | $633,231 | +$231 | +0.04% | |
| Jane Street Group, Llc | 0.00% | 4,998 | $501,399 | $501,249 | -$150 | -0.03% | |
| Royal Bank Of Canada | 0.00% | 4,394 | $441,000 | $440,674 | -$326 | -0.07% | |
| Northcape Wealth Management, Llc | 0.11% | 4,000 | $401,280 | $401,160 | -$120 | -0.03% | |
| Searle & Co. | 0.07% | 3,000 | $300,960 | $300,870 | -$90 | -0.03% | |
| Cetera Investment Advisers | 0.00% | 2,870 | $287,961 | $287,832 | -$129 | -0.04% | |
| National Bank Of Canada | 0.00% | 1,648 | $165,311 | $165,278 | -$33 | -0.02% | |
| Thurston, Springer, Miller, Herd & Titak, Inc. | 0.06% | 331 | $33,178 | $33,196 | +$18 | +0.05% | |
| Harbour Investments, Inc. | 0.00% | 199 | $19,964 | $19,958 | -$6 | -0.03% | |
| Cambridge Investment Research Advisors, Inc. | 0.01% | 27,312 | $2,740 | $2,739,120 | +$2,736,380 | +99867.90% | |
| Wells Fargo & Company/Mn | 0.00% | 1 | $60 | $100 | +$40 | +67.15% |
Frequently asked questions about GMMF
Who are the largest institutional holders of GMMF?
The largest institutional holders of GMMF reported in the latest SEC Form 13F filings include Mrwm Advisors, Llc, Blackrock, Inc., Hummer Financial Advisory Services Inc, Citadel Advisors Llc, and Tower Research Capital Llc (Trc). InsiderSet ranks institutional holders by their latest reported GMMF position.
What is GMMF institutional ownership?
This page tracks GMMF positions reported by institutional investment managers through SEC Form 13F. ISHARES GOVT MMKT ETF (GMMF) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own GMMF?
InsiderSet currently tracks 18 institutional managers reporting GMMF holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of GMMF shareholders.
How much GMMF stock do institutions own?
Institutional investment managers disclosed approximately $80.42M in GMMF holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was GMMF institutional ownership last updated?
The latest GMMF institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional GMMF holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its GMMF position after the reporting date.
Are institutions buying or selling GMMF?
Institutional buying and selling can be analyzed by comparing GMMF positions across consecutive 13F reporting periods. InsiderSet's GMMF Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View GMMF ownership changes.
How has GMMF institutional ownership changed over time?
InsiderSet tracks GMMF institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.