RMBS RAMBUS INC: institutional ownership and insider trading
654 funds reported holding $14.9B of RAMBUS INC in their latest 13F filings; in Q2 2026 funds net sold $49.3M, with 134 new positions and 66 funds selling out; over the last 12 months insiders bought $0 and sold $21.0M on the open market.
Famous investors holding RMBS
- Stanley Druckenmiller (Duquesne Family Office): $23.0M, 0.4% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $98.2M, 0.1% of the portfolio
- Izzy Englander (Millennium Management): $68.2M, 0.0% of the portfolio
- Two Sigma (Two Sigma Investments): $32.4M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $117M, 0.0% of the portfolio
- Lee Ainslie (Maverick Capital): $572K, 0.0% of the portfolio
- Ray Dalio (Bridgewater Associates): $514K, 0.0% of the portfolio
Largest institutional holders of RMBS
- BlackRock, Inc. (BLK) — $1.85B
- FMR LLC — $1.39B
- VANGUARD GROUP INC — $1.13B
- Invesco Ltd. (IVZ) — $880M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $806M
- VANGUARD CAPITAL MANAGEMENT LLC — $647M
- STATE STREET CORP (STT, STT-PG) — $519M
- PRICE T ROWE ASSOCIATES INC /MD/ — $443M
- GEODE CAPITAL MANAGEMENT, LLC — $305M
- JPMORGAN CHASE & CO (JPM, AMJB, VYLD, JPM-PC, JPM-PD, JPM-PJ, JPM-PK, JPM-PL, JPM-PM) — $261M
Recent RMBS insider trades
- Oct 2, 2026: Kissner Charles sold 5,000 shares ($555K)
- Sep 22, 2026: Kissner Charles sold 5,000 shares ($525K)
- Aug 7, 2026: Kissner Charles sold 5,000 shares ($505K)
- Jun 3, 2026: Sayiner Necip sold 5,000 shares ($851K)
5%+ owners
- BlackRock, Inc.: 12.2% (Schedule 13G/A, filed Jul 29, 2026)
- FMR LLC: 10.4% (Schedule 13G, filed Jun 5, 2026)
- Vanguard Portfolio Management: 6.2% (Schedule 13G, filed Apr 29, 2026)
- Invesco Ltd.: 6.0% (Schedule 13G, filed May 6, 2026)
- Vanguard Capital Management: 5.2% (Schedule 13G, filed Apr 30, 2026)