IRDM Iridium Communications Inc.: institutional ownership and insider trading
510 funds reported holding $5.28B of Iridium Communications Inc. in their latest 13F filings; in Q2 2026 funds net bought $116M, with 151 new positions and 46 funds selling out; over the last 12 months insiders bought $871K and sold $20.4M on the open market.
Famous investors holding IRDM
- Cathie Wood (ARK Investment Management): $66.6M, 0.4% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $33.4M, 0.1% of the portfolio
- Two Sigma (Two Sigma Investments): $19.9M, 0.0% of the portfolio
- Ray Dalio (Bridgewater Associates): $2.39M, 0.0% of the portfolio
- Ken Griffin (Citadel Advisors): $29.7M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $8.90M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $2.14M, 0.0% of the portfolio
Largest institutional holders of IRDM
- BlackRock, Inc. (BLK) — $738M
- AQR CAPITAL MANAGEMENT LLC — $374M
- VANGUARD PORTFOLIO MANAGEMENT LLC — $298M
- AMERICAN CENTURY COMPANIES INC — $266M
- STATE STREET CORP (STT, STT-PG) — $260M
- VANGUARD CAPITAL MANAGEMENT LLC — $232M
- Silver Heights Capital Management Inc — $180M
- VANGUARD GROUP INC — $177M
- Gotham Asset Management, LLC — $138M
- DIMENSIONAL FUND ADVISORS LP — $129M
Recent IRDM insider trades
- Sep 15, 2026: Last Timothy James sold 5,769 shares ($267K)
- Sep 3, 2026: Last Timothy James sold 2,013 shares ($95.3K)
- Aug 18, 2026: Fitzpatrick Thomas sold 224,279 shares ($11.2M)
- Aug 17, 2026: Olson Eric T sold 8,000 shares ($405K)
5%+ owners
- Baralonco Limited: 9.4% (Schedule 13D/A, filed Aug 4, 2026)
- AQR Capital Management, LLC: 6.6% (Schedule 13G, filed Aug 13, 2026)
- Vanguard Portfolio Management: 5.8% (Schedule 13G, filed Apr 29, 2026)