IMSR Terrestrial Energy Inc. /DE/: institutional ownership and insider trading
113 funds reported holding $187M of Terrestrial Energy Inc. /DE/ in their latest 13F filings; in Q2 2026 funds net bought $23.8M, with 38 new positions and 18 funds selling out; over the last 12 months insiders bought $112K and sold $0 on the open market.
Famous investors holding IMSR
- Ken Griffin (Citadel Advisors): $5.71M, 0.0% of the portfolio
- D. E. Shaw (D. E. Shaw & Co.): $4.73M, 0.0% of the portfolio
- Renaissance Technologies (Renaissance Technologies): $1.30M, 0.0% of the portfolio
- Izzy Englander (Millennium Management): $680K, 0.0% of the portfolio
Largest institutional holders of IMSR
- VANGUARD CAPITAL MANAGEMENT LLC — $24.2M
- EXCHANGE TRADED CONCEPTS, LLC — $15.3M
- UBS Group AG (UBS) — $12.5M
- SUSQUEHANNA INTERNATIONAL GROUP, LLP — $12.2M
- VANGUARD GROUP INC — $11.3M
- HRT FINANCIAL LP — $7.97M
- BlackRock, Inc. (BLK) — $7.61M
- JPMORGAN CHASE & CO (JPM, AMJB, VYLD, JPM-PC, JPM-PD, JPM-PJ, JPM-PK, JPM-PL, JPM-PM) — $6.78M
- CITADEL ADVISORS LLC — $5.71M
- JANE STREET GROUP, LLC — $5.07M
Recent IMSR insider trades
- Oct 14, 2026: Pardee Charles G bought 7,500 shares ($22.1K)
- Oct 13, 2026: Irish Simon bought 16,900 shares ($50.8K)
- Oct 9, 2026: Buckman Frederick W bought 12,000 shares ($39.3K)
5%+ owners
- Roberto Marco Sella: 14.3% (Schedule 13G, filed Jan 22, 2026)
- Simon Irish: 12.8% (Schedule 13D, filed Nov 4, 2025)
- David LeBlanc: 9.7% (Schedule 13D, filed Nov 4, 2025)
- Linden Advisors LP: 8.7% (Schedule 13G, filed Mar 31, 2025)
- Ramya Rao: 6.2% (Schedule 13G, filed Feb 7, 2025)
- Barclays PLC: 6.2% (Schedule 13G/A, filed Mar 21, 2025)