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IMSR

Terrestrial Energy
IMSR

88 hedge funds and large institutions have $111M invested in Terrestrial Energy in 2026 Q1 according to their latest regulatory filings, with 35 funds opening new positions, 19 increasing their positions, 22 reducing their positions, and 26 closing their positions.

New
Increased
Maintained
Reduced
Closed

114% more call options, than puts

Call options by funds: $15.7M | Put options by funds: $7.34M

35% more first-time investments, than exits

New positions opened: 35 | Existing positions closed: 26

7% more funds holding

Funds holding: 82 → 88 (+6)

3.39% less ownership

Funds ownership: 26.19% → 22.8% (-3.4%)

14% less repeat investments, than reductions

Existing positions increased: 19 | Existing positions reduced: 22

15% less capital invested

Capital invested by funds: $131M → $111M (-$19.4M)

Holders
88
Holders Change
+6
Holders Change %
+7.32%
% of All Funds
1.08%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
35
Increased
19
Reduced
22
Closed
26
Calls
$15.7M
Puts
$7.34M
Net Calls
+$8.34M
Net Calls Change
-$7.47M

Top Buyers

Rank Fund Capital Flow
1
ETC
Exchange Traded Concepts
Oklahoma
+$16.6M
2
VCM
Vennlight Capital Management
Connecticut
+$4.56M
3
CDMG
Creek Drive Management Group
California
+$2.62M
4
HHAM
HITE Hedge Asset Management
Massachusetts
+$1.9M
5
Renaissance Technologies
Renaissance Technologies
New York
+$1.86M

Top Sellers

Rank Fund Capital Flow
1
Balyasny Asset Management
Balyasny Asset Management
Illinois
-$9.48M
2
Citadel Advisors
Citadel Advisors
Florida
-$5.96M
3
MI
MMCAP International
Cayman Islands
-$5.6M
4
SIG
Senator Investment Group
New York
-$5.5M
5
CF
Cantor Fitzgerald
New York
-$3.36M
Name Holding Trade Value Shares
Change 		Change in
Stake
Barclays
101
Barclays
United Kingdom
– -$277K -45,275 Closed
Millennium Management
102
Millennium Management
New York
– -$193K -31,658 Closed
LIP
103
Lighthouse Investment Partners
Florida
– -$161K -26,340 Closed
VF
104
Virtu Financial
New York
– -$133K -21,688 Closed
LCM
105
Landscape Capital Management
New Jersey
– -$105K -17,121 Closed
AGM
106
Alpine Global Management
New York
– -$99.3K -16,252 Closed
MG
107
Marex Group
– -$73.3K -12,000 Closed
SSG
108
Summit Securities Group
New York
– -$70.3K -11,500 Closed
Grantham, Mayo, Van Otterloo & Co (GMO)
109
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
– -$70.1K -11,475 Closed
ACM
110
Aster Capital Management
United Arab Emirates
– -$8.19K -1,340 Closed
DCM
111
Davidson Capital Management
Texas
– -$1.11K -182 Closed
FHA
112
Flagship Harbor Advisors
Massachusetts
– -$855 -140 Closed
Fidelity Investments
113
Fidelity Investments
Massachusetts
– -$611 -100 Closed
TCM
114
Triumph Capital Management
Colorado
– -$275 -45 Closed
1 2 3 4
5

IMSR Hedge Fund Activity: Q1 2026 in Review

88 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Terrestrial Energy (IMSR) for Q1 2026, worth a combined $111M — down 15% from $131M a quarter earlier.

Buyers outnumbered sellers: 35 funds opened new IMSR positions and 26 closed out — a net gain of 9 holders — while 19 added to existing stakes and 22 trimmed.

The largest buyer was Exchange Traded Concepts, opening a new position worth an estimated $16.6M. The largest seller was Balyasny Asset Management, cutting an estimated $9.48M.

  • 88 institutional investors held Terrestrial Energy (IMSR) as of Q1 2026, up from 82 in Q4 2025.
  • Funds reported $111M of Terrestrial Energy stock for Q1 2026, down 15% quarter-over-quarter.
  • 35 funds opened new Terrestrial Energy positions in Q1 2026 and 26 closed out, a net change of +9 holders.
  • The largest Terrestrial Energy buyer in Q1 2026 was Exchange Traded Concepts, an estimated $16.6M added.
  • The largest Terrestrial Energy seller in Q1 2026 was Balyasny Asset Management, an estimated $9.48M sold.

Based on aggregated 13F filings for Q1 2026.