Who owns iShares Government Money Market ETF?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of GMMF from SEC Form 13F filings across 19 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 19 institutions disclosed 837,426 shares of iShares Government Money Market ETF worth $80.6M — about 45.3% of shares outstanding; the largest disclosed holder is MRWM Advisors, LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
19
13F holders
$80.6M
value, 2026 filers
45.3%
of shares outstanding (837,426 sh)
8
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of GMMF's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | MRWM Advisors, LLCNEW | 424,326 | $42.6M | 17.5% | 22.9% | new |
| 2 | BlackRock, Inc. | 250,000 | $25.1M | 0.0% | 13.5% | 0.0% |
| 3 | Hummer Financial Advisory Services Inc | 31,000 | $3.1M | 2.0% | 1.7% | -3.1% |
| 4 | Cambridge Investment Research Advisors, Inc. | 27,312 | $2,740 | 0.0% | 1.5% | +66.5% |
| 5 | CITADEL ADVISORS LLC | 27,109 | $2.7M | 0.0% | 1.5% | +345.3% |
| 6 | Tower Research Capital LLC (TRC)NEW | 24,078 | $2.4M | 0.1% | 1.3% | new |
| 7 | GOLDMAN SACHS GROUP INCNEW | 9,625 | $965,580 | 0.0% | 0.5% | new |
| 8 | SAPIENT CAPITAL LLCNEW | 7,730 | $775,474 | 0.0% | 0.4% | new |
| 9 | Granite Bay Wealth Management, LLC | 6,314 | $633 | 0.1% | 0.3% | +59.7% |
| 10 | Cypress Capital, LLCNEW | 5,163 | $517,952 | 0.1% | 0.3% | new |
| 11 | JANE STREET GROUP, LLC | 4,998 | $501,399 | 0.0% | 0.3% | -45.3% |
| 12 | ROYAL BANK OF CANADA | 4,394 | $441,000 | 0.0% | 0.2% | +39845.5% |
| 13 | NORTHCAPE WEALTH MANAGEMENT, LLC | 4,000 | $401,280 | 0.1% | 0.2% | -7.0% |
| 14 | THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. | 3,659 | $367,066 | 0.0% | 0.2% | -47.3% |
| 15 | SEARLE & CO. | 3,000 | $300,960 | 0.1% | 0.2% | 0.0% |
| 16 | Cetera Investment AdvisersNEW | 2,870 | $287,961 | 0.0% | 0.2% | new |
| 17 | NATIONAL BANK OF CANADA /FI/NEW | 1,648 | $165,311 | 0.0% | 0.1% | new |
| 18 | HARBOUR INVESTMENTS, INC.NEW | 199 | $19,964 | 0.0% | 0% | new |
| 19 | WELLS FARGO & COMPANY/MN | 1 | $60 | 0.0% | 0% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.