Terrestrial Energy Inc.
IMSRW- Exchange
- Nasdaq
- Industry
- Fabricated Plate Work (Boiler Shops)
- SEC CIK
- 0002019804
No open-market purchases or sales by Terrestrial Energy Inc. insiders were filed in the last 90 days; 24 institutions reported holding it in 13F filings for Q2 2026, worth $39.8M in total; no superinvestor holds it.
Other share classesIMSR
Q4 2025 vs. Q3 2025
How the institutions holding Terrestrial Energy Inc. changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Q4 2025 | Change |
|---|---|---|---|
| Holders | 24 | 28 | +4 |
| Shares | 9.54M | 10.6M | +1.10M (+11.5%) |
| Value | $57.3M | $23.1M | −$34.2M (−59.7%) |
New holders (13)
Institutions that held Terrestrial Energy Inc. at the end of Q4 2025 but not at the end of Q3 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Caption Management, LLC | 806,543 | $1.71M | 0.08% |
| Highbridge Capital Management LLC | – | $646.6K | 0.03% |
| Hudson Bay Capital Management LP | 247,400 | $524.5K | 0.00% |
| Walleye Capital LLC | 154,680 | $327.9K | 0.00% |
| Periscope Capital Inc. | 152,500 | $225.7K | 0.04% |
| Jain Global LLC | 90,918 | $192.7K | 0.00% |
| Wolverine Asset Management LLC | 71,569 | $151.7K | 0.00% |
| Alberta Investment Management Corp | 50,000 | $106.0K | 0.00% |
| DLD Asset Management, LP | 14,323 | $30.4K | 0.00% |
| Stoic Point Capital Management LLC | 13,402 | $28.4K | 0.02% |
| Warberg Asset Management LLC | 11,000 | $23.3K | 0.01% |
| Advisor Group Holdings, Inc. | 600 | $1.27K | 0.00% |
| Clear Street Markets LLC | 1 | $2 | 0.00% |
Sold out (9)
Institutions that held Terrestrial Energy Inc. at the end of Q3 2025 and filed for Q4 2025 without it.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| CNH Partners LLC | 241,236 | $1.32M |
| Whitebox Advisors LLC | 200,000 | $1.20M |
| BNP Paribas Arbitrage, SA | 99,332 | $596.0K |
| Picton Mahoney Asset Management | 59,282 | $355.0K |
| Rivernorth Capital Management, LLC | 49,700 | $298.2K |
| Mint Tower Capital Management B.V. | 33,505 | $201.0K |
| Boothbay Fund Management, LLC | 11,476 | $188.3K |
| Fulton Breakefield Broenniman LLC | 18,405 | $110.4K |
| Bank of America Corp | 308 | $1.85K |