IMSR Terrestrial Energy Inc.
Terrestrial Energy Inc. (IMSR) Institutional Ownership
What the institutions did with IMSR last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended September 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| EXCHANGE TRADED CONCEPTS, LLC | 616.4K | 43.6% |
| FNY Investment Advisers, LLC | 179.2K | 12.7% |
| CITIGROUP INC | 146.1K | 10.3% |
| COMMONWEALTH EQUITY SERVICES, LLC | 120.8K | 8.5% |
| WOLVERINE ASSET MANAGEMENT LLC | 79.2K | 5.6% |
| IMC-Chicago, LLC | 73.2K | 5.2% |
| SIMON QUICK ADVISORS, LLC | 40.0K | 2.8% |
| BARCLAYS PLC | 34.5K | 2.4% |
| Themes Management Co LLC | 19.7K | 1.4% |
| StoneX Group Inc. | 17.3K | 1.2% |
| Bank of New York Mellon Corp | 16.9K | 1.2% |
| US BANCORP \DE\ | 16.2K | 1.1% |
| Valeo Financial Advisors, LLC | 15.0K | 1.1% |
| ALPS ADVISORS INC | 11.9K | 0.8% |
| J. Safra Sarasin Holding AG | 11.5K | 0.8% |
| Compound Planning, Inc. | 10.7K | 0.8% |
| Caitong International Asset Management Co., Ltd | 3.3K | 0.2% |
| GGM Financial LLC | 1.0K | 0.1% |
| Cherry Tree Wealth Management, LLC | 692 | 0.0% |
| Farther Finance Advisors, LLC | 391 | 0.0% |
| Parallel Advisors, LLC | 280 | 0.0% |
| Essential Partners LLC | 279 | 0.0% |
| SJS Investment Consulting Inc. | 176 | 0.0% |
| Latitude Advisors, LLC | 135 | 0.0% |
| Redwood Park Advisors LLC | 116 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| EXCHANGE TRADED CONCEPTS, LLC | Reduced | 2.2M | 616.4K | -1.5M |
| CITIGROUP INC | Increased | 1.5K | 146.1K | +144.6K |
| Y-Intercept (Hong Kong) Ltd | Sold Out | 38.2K | 0 | -38.2K |
| BARCLAYS PLC | Increased | 354 | 34.5K | +34.1K |
| WOLVERINE ASSET MANAGEMENT LLC | Increased | 50.1K | 79.2K | +29.2K |
| FNY Investment Advisers, LLC | Increased | 151.7K | 179.2K | +27.6K |
| SLT Holdings LLC | Sold Out | 21.0K | 0 | -21.0K |
| Themes Management Co LLC | New | 0 | 19.7K | +19.7K |
| StoneX Group Inc. | New | 0 | 17.3K | +17.3K |
| ALPS ADVISORS INC | New | 0 | 11.9K | +11.9K |
| J. Safra Sarasin Holding AG | New | 0 | 11.5K | +11.5K |
| Compound Planning, Inc. | New | 0 | 10.7K | +10.7K |
| COMMONWEALTH EQUITY SERVICES, LLC | Increased | 110.8K | 120.8K | +10.0K |
| Caitong International Asset Management Co., Ltd | Increased | 447 | 3.3K | +2.9K |
| IMC-Chicago, LLC | Reduced | 75.0K | 73.2K | -1.8K |
| GGM Financial LLC | New | 0 | 1.0K | +1.0K |
| EverSource Wealth Advisors, LLC | Reduced | 594 | 74 | -520 |
| Latitude Advisors, LLC | New | 0 | 135 | +135 |
| Essential Partners LLC | Reduced | 407 | 279 | -128 |
| SJS Investment Consulting Inc. | Increased | 59 | 176 | +117 |
| Parallel Advisors, LLC | Increased | 171 | 280 | +109 |
| Farther Finance Advisors, LLC | Increased | 301 | 391 | +90 |
| Ascentis Wealth Management, LLC | New | 0 | 42 | +42 |
| IFP Advisors, Inc | New | 0 | 38 | +38 |
| Clearstead Advisors, LLC | Increased | 10 | 24 | +14 |
| Root Financial Partners, LLC | New | 0 | 9 | +9 |
| Redwood Park Advisors LLC | Increased | 109 | 116 | +7 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.