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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
Balyasny Asset Management
26
Balyasny Asset Management
Illinois
$1.24M -$9.48M -1,195,050 -85%
Squarepoint
27
Squarepoint
New York
$1.04M +$666K +84,002 +94%
Bank of America
28
Bank of America
North Carolina
$797K +$516K +65,021 +96%
Northern Trust
29
Northern Trust
Illinois
$748K -$252K -31,840 -20%
HCI
30
Harraden Circle Investments
New York
$733K – – –
YAG
31
Yorkville Advisors Global
New Jersey
$733K +$967K +122,000 New
SC
32
Shay Capital
New York
$709K -$1.26M -159,277 -57%
Commonwealth Equity Services
33
Commonwealth Equity Services
Massachusetts
$601K +$366K +46,108 +85%
PC
34
Periscope Capital
Ontario, Canada
$580K – – –
SAMU
35
SONA Asset Management (US)
New York
$514K -$114K -14,434 -14%
KPF
36
K2 Principal Fund
Ontario, Canada
$481K +$634K +80,000 New
TIA
37
Tiemann Investment Advisors
California
$456K – – –
MCM
38
Moore Capital Management
New York
$450K +$198K +25,000 +50%
FIA
39
FNY Investment Advisers
New York
$397K -$189K -23,840 -26%
MCM
40
Massar Capital Management
Connecticut
$390K – – –
UBS AM
41
UBS AM
Illinois
$381K +$503K +63,500 New
CM
42
CastleKnight Management
New York
$365K – – –
DC
43
Diametric Capital
Massachusetts
$355K +$469K +59,191 New
Swiss National Bank
44
Swiss National Bank
Switzerland
$340K +$449K +56,600 New
MLM
45
Mount Lucas Management
Pennsylvania
$309K +$91.2K +11,500 +29%
MI
46
MMCAP International
Cayman Islands
$266K -$5.6M -705,721 -94%
SQA
47
Simon Quick Advisors
New Jersey
$240K -$39.6K -5,000 -11%
BCM
48
Bluefin Capital Management
New York
$195K +$257K +32,463 New
California State Teachers Retirement System (CalSTRS)
49
California State Teachers Retirement System (CalSTRS)
California
$188K +$248K +31,276 New
VGA
50
Vanguard Global Advisers
Pennsylvania
$162K +$215K +27,055 New
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.