IMSR Terrestrial Energy Inc.

NASDAQ
$4.16

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.

Hedge fund breadth
+37.50
22 buyers / 10 sellers
STRONG BUYING
Funds compared
34
funds with comparable IMSR positions
32 current holders · 18 prior-quarter holders
Net share change
+6.21M
+9.11M added, -2.90M cut
Position activity
16 new 6 increased 8 reduced 2 exited

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 New · +194.6K
  • Highbridge Capital Management New · +244.0K
  • MILLENNIUM MANAGEMENT LLC New · +96.0K
  • Aristeia Capital New · +840.0K
  • Wolverine Asset Management New · +50.1K

Most significant sellers

By move score, not size.

  • CITADEL ADVISORS LLC Reduced · -1.27M
  • Schonfeld Strategic Advisors Sold Out · -19.3K
  • Brevan Howard Capital Management Sold Out · -25.2K
  • Balyasny Asset Management L.P. Reduced · -149.4K
  • Alyeska Investment Group, L.P. Reduced · -500.0K

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.

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Hedge 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.