BlackRock ETF Trust - GMMF
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | History | No change | 250,000 | 25,056 | 0.0% | 0.0% | 1 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| Hummer Financial Advisory Services Inc | History | Reduced | 26,900 | 2,696 | 1.9% | 2.02% | 2 | -700 | -2.54% | Q4 2025 | Jan 12, 2026 |
| Tower Research Capital LLC (TRC) | History | Added to | 25,733 | 2,579 | 0.06% | 0.06% | 3 | +4,857 | 23.27% | Q4 2025 | Feb 17, 2026 |
| CITADEL ADVISORS LLC | History | Reduced | 11,259 | 1,128 | 0.0% | 0.0% | 4 | -8,958 | -44.31% | Q4 2025 | Feb 17, 2026 |
| JANE STREET GROUP, LLC | History | Added to | 11,185 | 1,121 | 0.0% | 0.0% | 5 | +8,533 | 321.76% | Q4 2025 | Feb 12, 2026 |
| THURSTON, SPRINGER, MILLER, HERD & TITAK, INC. | History | Reduced | 4,977 | 498 | 0.17% | 1.41% | 6 | -2,125 | -29.92% | Q4 2025 | Jan 20, 2026 |
| NORTHCAPE WEALTH MANAGEMENT, LLC | History | New | 4,700 | 471 | 0.13% | — | 7 | +4,700 | New | Q4 2025 | Jan 22, 2026 |
| SEARLE & CO. | History | No change | 3,000 | 300 | 0.08% | 0.08% | 8 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| ROYAL BANK OF CANADA | History | New | 11 | 1 | 0.0% | — | 9 | +11 | New | Q4 2025 | Feb 17, 2026 |