IMSR Terrestrial Energy Inc.
Terrestrial Energy Inc. (IMSR) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| Linden Advisors Event Long/Short | New | +194.6K | — | $1.4M | 0.0% | 62 |
| Highbridge Capital Management Event Macro | New | +244.0K | — | $1.7M | 0.2% | 58 |
| MILLENNIUM MANAGEMENT LLC | New | +96.0K | — | $679.9K | 0.0% | 57 |
| Aristeia Capital Event Long/Short | New | +840.0K | — | $5.9M | 0.1% | 56 |
| Wolverine Asset Management Event Quant | New | +50.1K | — | $354.5K | 0.0% | 54 |
| CITADEL ADVISORS LLC Quant | Reduced | -1.27M | -99.2% | $9.0M | 0.0% | 54 |
| Voloridge Investment Management Quant | New | +83.4K | — | $590.3K | 0.0% | 53 |
| Saba Capital Management Event | New | +65.7K | — | $465.0K | 0.0% | 53 |
| Caption Management Quant | New | +865.4K | — | $6.1M | 0.1% | 53 |
| ExodusPoint Capital Management Long/Short Quant | New | +40.2K | — | $284.7K | 0.0% | 52 |
Most significant buyers
By move score, not size.
- Linden Advisors
- Highbridge Capital Management
- MILLENNIUM MANAGEMENT LLC
- Aristeia Capital
- Wolverine Asset Management
Most significant sellers
By move score, not size.
- CITADEL ADVISORS LLC
- Schonfeld Strategic Advisors
- Brevan Howard Capital Management
- Balyasny Asset Management L.P.
- Alyeska Investment Group, L.P.
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Linden Advisors | 1 | 194.6K | 0 | +194.6K | — | 0.0% | New | 62 |
| Highbridge Capital Management | 2 | 244.0K | 0 | +244.0K | — | 0.2% | New | 58 |
| MILLENNIUM MANAGEMENT LLC | 2 | 96.0K | 0 | +96.0K | — | 0.0% | New | 57 |
| Aristeia Capital | 2 | 840.0K | 0 | +840.0K | — | 0.1% | New | 56 |
| Wolverine Asset Management | 2 | 50.1K | 0 | +50.1K | — | 0.0% | New | 54 |
| CITADEL ADVISORS LLC | 1 | 10.1K | 1.3M | -1.27M | -99.2% | 0.0% | Reduced | 54 |
| Voloridge Investment Management | 2 | 83.4K | 0 | +83.4K | — | 0.0% | New | 53 |
| Saba Capital Management | 3 | 65.7K | 0 | +65.7K | — | 0.0% | New | 53 |
| Caption Management | 3 | 865.4K | 0 | +865.4K | — | 0.1% | New | 53 |
| ExodusPoint Capital Management | 3 | 40.2K | 0 | +40.2K | — | 0.0% | New | 52 |
| LMR Partners | 3 | 3.9M | 690.7K | +3.25M | +470.0% | 0.2% | Increased | 52 |
| Hudson Bay Capital Management | 3 | 1.9M | 452.3K | +1.43M | +316.9% | 0.0% | Increased | 52 |
| Walleye Capital | 3 | 52.6K | 0 | +52.6K | — | 0.0% | New | 51 |
| Boothbay Fund Management | 4 | 621.0K | 0 | +621.0K | — | 0.1% | New | 51 |
| Schonfeld Strategic Advisors | 3 | 0 | 19.3K | -19.3K | -100.0% | 0.0% | Sold Out | 51 |
| Magnetar Capital | 2 | 967.0K | 244.0K | +723.0K | +296.3% | 0.0% | Increased | 51 |
| AQR Capital Management | 3 | 59.8K | 0 | +59.8K | — | 0.0% | New | 51 |
| Parallax Volatility Advisers | 3 | 68.5K | 0 | +68.5K | — | 0.0% | New | 50 |
| Brevan Howard Capital Management | 3 | 0 | 25.2K | -25.2K | -100.0% | 0.0% | Sold Out | 49 |
| Y-Intercept | 4 | 38.2K | 0 | +38.2K | — | 0.0% | New | 48 |
| Aquatic Capital Management | 4 | 89.0K | 0 | +89.0K | — | 0.0% | New | 48 |
| Engineers Gate | 4 | 82.3K | 0 | +82.3K | — | 0.0% | New | 48 |
| Tudor Investment Corporation | 2 | 42.2K | 11.3K | +31.0K | +275.2% | 0.0% | Increased | 47 |
| Balyasny Asset Management L.P. | 2 | 56.5K | 205.9K | -149.4K | -72.6% | 0.0% | Reduced | 46 |
| CastleKnight Management | 3 | 238.6K | 60.7K | +177.9K | +293.1% | 0.1% | Increased | 46 |
| Alyeska Investment Group, L.P. | 2 | 222.0K | 722.0K | -500.0K | -69.3% | 0.0% | Reduced | 44 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 183.8K | 407.9K | -224.1K | -54.9% | 0.0% | Reduced | 43 |
| D. E. Shaw & Co., Inc. | 1 | 668.0K | 1.2M | -546.8K | -45.0% | 0.0% | Reduced | 40 |
| Squarepoint Ops LLC | 2 | 85.5K | 173.2K | -87.7K | -50.6% | 0.0% | Reduced | 36 |
| MARSHALL WACE, LLP | 2 | 20.3K | 26.3K | -6.0K | -22.8% | 0.0% | Reduced | 31 |
| Verition Fund Management | 2 | 375.0K | 445.0K | -70.0K | -15.7% | 0.0% | Reduced | 27 |
| Winton Group | 4 | 504.0K | 496.3K | +7.7K | +1.6% | 0.1% | Increased | 18 |
| Sona Asset Management | 3 | 85.6K | 85.6K | 0 | +0.0% | 0.0% | Unchanged | 16 |
| Moore Capital Management | 3 | 75.0K | 75.0K | 0 | +0.0% | 0.0% | Unchanged | 16 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.