Terrestrial Energy Inc.
IMSR- 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; 110 institutions reported holding it in 13F filings for Q2 2026, worth $151.3M in total; no superinvestor holds it.
Other share classesIMSRW
13F holders, Q4 2024
Institutional positions in Terrestrial Energy Inc. as of Dec 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 35
- +35 vs. Q3 2024
- Shares held
- 16.2M
- +16.2M vs. Q3 2024
- Total value
- $162.3M
- +$162.3M vs. Q3 2024
- New holders
- 35
- 0 more added
- Sold out
- 0
- 0 more reduced
Compare with Q3 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting IMSR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 110 | $151.3M |
| Q1 2026 | 88 | $111.3M |
| Q4 2025 | 82 | $130.7M |
| Q3 2025 | 66 | $162.5M |
| Q2 2025 | 65 | $209.6M |
| Q1 2025 | 45 | $213.4M |
| Q4 2024 | 35 | $162.3M |
| Q3 2024 | 0 | $0 |
| Q2 2024 | 0 | $0 |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2024
Shares, value and share of portfolio for each institution holding Terrestrial Energy Inc.; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Clear Street LLC | 7,364 | $73.8K | 0.00% | +7,364 | New |
| Radcliffe Capital Management, L.P. | 13,400 | $134.3K | 0.02% | +13,400 | New |
| UBS Group AG | 16,620 | $166.5K | 0.00% | +16,620 | New |
| Fir Tree Capital Management LP | 20,519 | $205.6K | 0.48% | +20,519 | New |
| Kepos Capital LP | 30,000 | $301.0K | 0.26% | +30,000 | New |
| Toronto Dominion Bank | 31,687 | $317.5K | 0.00% | +31,687 | New |
| Tuttle Tactical Management | 35,000 | $350.7K | 1.80% | +35,000 | New |
| PenderFund Capital Management Ltd. | 30,000 | $432.1K | 0.09% | +30,000 | New |
| Schonfeld Strategic Advisors LLC | 75,000 | $751.5K | 0.00% | +75,000 | New |
| Heights Capital Management, Inc | 80,000 | $801.6K | 0.40% | +80,000 | New |
| Dakota Wealth Management | 103,450 | $1.04M | 0.02% | +103,450 | New |
| Mint Tower Capital Management B.V. | 144,903 | $1.45M | 0.38% | +144,903 | New |
| Virtu Financial LLC | 146,019 | $1.46M | 0.08% | +146,019 | New |
| Deltec Asset Management LLC | 150,000 | $1.50M | 0.30% | +150,000 | New |
| Tenor Capital Management Co., L.P. | 175,000 | $1.74M | 0.02% | +175,000 | New |
| Centiva Capital, LP | 195,221 | $1.96M | 0.07% | +195,221 | New |
| Periscope Capital Inc. | 200,000 | $2.00M | 1.42% | +200,000 | New |
| Verition Fund Management LLC | 203,412 | $2.04M | 0.01% | +203,412 | New |
| Gritstone Asset Management LLC | 224,618 | $2.25M | 2.38% | +224,618 | New |
| Berkley W R Corp | 297,240 | $2.98M | 0.17% | +297,240 | New |
| Bulldog Investors, LLP | 349,898 | $3.51M | 0.92% | +349,898 | New |
| Whitebox Advisors LLC | 400,000 | $4.01M | 0.15% | +400,000 | New |
| Rivernorth Capital Management, LLC | 400,000 | $4.01M | 0.19% | +400,000 | New |
| Millennium Management LLC | 450,000 | $4.51M | 0.00% | +450,000 | New |
| Highbridge Capital Management LLC | 500,000 | $5.01M | 0.19% | +500,000 | New |
| Two Sigma Investments, LP | 500,000 | $5.01M | 0.01% | +500,000 | New |
| Goldman Sachs Group Inc | 640,024 | $6.41M | 0.00% | +640,024 | New |
| Westchester Capital Management, LLC | 670,481 | $6.72M | 0.39% | +670,481 | New |
| Wolverine Asset Management LLC | 765,994 | $7.68M | 0.14% | +765,994 | New |
| D. E. Shaw & Co., Inc. | 920,000 | $9.22M | 0.01% | +920,000 | New |
| Karpus Management, Inc. | 1,293,947 | $13.0M | 0.38% | +1,293,947 | New |
| LMR Partners LLP | 1,500,000 | $15.0M | 0.26% | +1,500,000 | New |
| CNH Partners LLC | 1,563,833 | $15.7M | 0.37% | +1,563,833 | New |
| Picton Mahoney Asset Management | 1,980,000 | $19.8M | 0.75% | +1,980,000 | New |
| Vivaldi Asset Management, LLC | 2,069,998 | $20.7M | 1.58% | +2,069,998 | New |