GMMF BLACKROCK ETF TRUST: institutional ownership and insider trading
18 funds reported holding $83.2M of BLACKROCK ETF TRUST in their latest 13F filings; in Q2 2026 funds net bought $50.5M, with 8 new positions and 1 funds selling out.
Famous investors holding GMMF
- Ken Griffin (Citadel Advisors): $2.72M, 0.0% of the portfolio
Largest institutional holders of GMMF
- MRWM Advisors, LLC — $42.6M
- BlackRock, Inc. (BLK) — $25.1M
- Hummer Financial Advisory Services Inc — $3.11M
- Cambridge Investment Research Advisors, Inc. — $2.74M
- CITADEL ADVISORS LLC — $2.72M
- Tower Research Capital LLC (TRC) — $2.42M
- GOLDMAN SACHS GROUP INC (GS, GSCE, GS-PA, GS-PC, GS-PD) — $966K
- SAPIENT CAPITAL LLC — $775K
- Granite Bay Wealth Management, LLC — $633K
- JANE STREET GROUP, LLC — $501K
5%+ owners
- BlackRock Portfolio Management LLC: 15.1% (Schedule 13G/A, filed Jun 4, 2026)