ASPI ASP Isotopes Inc.: institutional ownership and insider trading
203 funds reported holding $505M of ASP Isotopes Inc. in their latest 13F filings; in Q2 2026 funds net bought $8.58M, with 37 new positions and 27 funds selling out; over the last 12 months insiders bought $61.8K and sold $9.53M on the open market.
Famous investors holding ASPI
- Ken Griffin (Citadel Advisors): $10.7M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $581K, 0.0% of the portfolio
Largest institutional holders of ASPI
- BlackRock, Inc. (BLK) — $57.3M
- Encompass Capital Advisors LLC — $40.8M
- VANGUARD GROUP INC — $34.3M
- VANGUARD CAPITAL MANAGEMENT LLC — $31.0M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP — $28.3M
- Rovida Investment Management Ltd — $25.5M
- UBS Group AG (UBS) — $23.4M
- GEODE CAPITAL MANAGEMENT, LLC — $18.3M
- Alyeska Investment Group, L.P. — $17.7M
- STATE STREET CORP (STT, STT-PG) — $16.1M
Recent ASPI insider trades
- Oct 16, 2026: Kiessling Heather sold 21,830 shares ($47.8K)
- Oct 14, 2026: Ainscow Robert sold 22,500 shares ($47.6K)
- Sep 30, 2026: Ryan Robert John Andrew bought 15,000 shares ($40.2K)
- Sep 28, 2026: Ryan Robert John Andrew bought 8,000 shares ($21.6K)
5%+ owners
- BlackRock, Inc.: 6.6% (Schedule 13G/A, filed Apr 27, 2026)