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.
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)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
ETC
Exchange Traded Concepts
Oklahoma City,
Oklahoma
|
+$16.6M |
| 2 |
VCM
Vennlight Capital Management
Weston,
Connecticut
|
+$4.56M |
| 3 |
CDMG
Creek Drive Management Group
San Francisco,
California
|
+$2.62M |
| 4 |
HHAM
HITE Hedge Asset Management
Braintree,
Massachusetts
|
+$1.9M |
| 5 |
Renaissance Technologies
New York
|
+$1.86M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Balyasny Asset Management
Chicago,
Illinois
|
-$9.48M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$5.96M |
| 3 |
MI
MMCAP International
Grand Cayman,
Cayman Islands
|
-$5.6M |
| 4 |
SIG
Senator Investment Group
New York
|
-$5.5M |
| 5 |
CF
Cantor Fitzgerald
New York
|
-$3.36M |
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.