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IMSR

Terrestrial Energy
IMSR

65 hedge funds and large institutions have $210M invested in Terrestrial Energy in 2025 Q2 according to their latest regulatory filings, with 29 funds opening new positions, 7 increasing their positions, 23 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed

222% more first-time investments, than exits

New positions opened: 29 | Existing positions closed: 9

44% more funds holding

Funds holding: 45 → 65 (+20)

2% less capital invested

Capital invested by funds: $213M → $210M (-$3.8M)

6.29% less ownership

Funds ownership: 88.01% → 81.72% (-6.3%)

70% less repeat investments, than reductions

Existing positions increased: 7 | Existing positions reduced: 23

Holders
65
Holders Change
+20
Holders Change %
+44.44%
% of All Funds
0.86%
Holding in Top 10
2
Holding in Top 10 Change
+2
Holding in Top 10 Change %
% of All Funds
0.03%
New
29
Increased
7
Reduced
23
Closed
9
Calls
$360K
Puts
–
Net Calls
+$360K
Net Calls Change
+$360K

Top Buyers

Rank Fund Capital Flow
1
VCM
Vennlight Capital Management
Connecticut
+$11.4M
2
ACM
Arosa Capital Management
Florida
+$6.23M
3
SC
Shay Capital
New York
+$6.1M
4
Balyasny Asset Management
Balyasny Asset Management
Illinois
+$5.34M
5
CF
Cantor Fitzgerald
New York
+$5.19M

Top Sellers

Rank Fund Capital Flow
1
AA
AQR Arbitrage
Connecticut
-$13.6M
2
ECA
Encompass Capital Advisors
New York
-$10M
3
PMAM
Picton Mahoney Asset Management
Ontario, Canada
-$9.32M
4
FTCM
First Trust Capital Management
Illinois
-$7.54M
5
MF
Magnetar Financial
Illinois
-$6.25M
Name Holding Trade Value Shares
Change 		Change in
Stake
Toronto Dominion Bank
51
Toronto Dominion Bank
Ontario, Canada
$383K -$456K -40,960 -54%
VF
52
Virtu Financial
New York
$242K +$92.3K +8,298 +61%
PFGIA
53
Patriot Financial Group Insurance Agency
Massachusetts
$209K +$210K +18,850 New
Susquehanna International Group
54
Susquehanna International Group
Pennsylvania
$168K -$280K -25,145 -62%
TCM
55
Tuttle Capital Management
Connecticut
$167K -$222K -20,000 -57%
National Bank of Canada
56
National Bank of Canada
Quebec, Canada
$139K +$140K +12,568 New
SSA
57
Schonfeld Strategic Advisors
New York
$126K -$374K -33,615 -75%
NC
58
North Capital
Utah
$66.6K +$66.7K +6,000 New
UBS Group
59
UBS Group
Switzerland
$40.5K -$305K -27,402 -88%
GCS
60
Gordian Capital (Singapore)
Singapore
$33.3K +$33.4K +3,000 New
AIM
61
Anchor Investment Management
South Carolina
$23.3K +$23.4K +2,100 New
FDCDDQ
62
Federation des caisses Desjardins du Quebec
Quebec, Canada
$13.3K +$13.3K +1,200 New
Osaic Holdings
63
Osaic Holdings
Arizona
$2.22K +$2.22K +200 New
TRCT
64
Tower Research Capital (TRC)
New York
$1.17K +$1.17K +105 New
Citigroup
65
Citigroup
New York
$555 +$556 +50 New
AA
66
AQR Arbitrage
Connecticut
– -$13.6M -1,288,674 Closed
ECA
67
Encompass Capital Advisors
New York
– -$10M -946,165 Closed
Two Sigma Investments
68
Two Sigma Investments
New York
– -$5.26M -500,000 Closed
AC
69
Athos Capital
Hong Kong
– -$2.1M -200,000 Closed
DAM
70
Decagon Asset Management
United Kingdom
– -$591K -56,178 Closed
GCL
71
Glazer Capital LLC
New York
– -$387K -36,831 Closed
PCM
72
PenderFund Capital Management
British Columbia, Canada
– -$296K -30,000 Closed
MSU
73
Mizuho Securities USA
New York
– -$271K -25,837 Closed
CS
74
Clear Street
New York
– -$1.74K -165 Closed
1 2
3

IMSR Hedge Fund Activity: Q2 2025 in Review

65 of the 7,596 institutional investors tracked by Wall St. Rank reported a position in Terrestrial Energy (IMSR) for Q2 2025, worth a combined $210M — down 1.8% from $213M a quarter earlier.

Buyers outnumbered sellers: 29 funds opened new IMSR positions and 9 closed out — a net gain of 20 holders — while 7 added to existing stakes and 23 trimmed.

The largest buyer was Vennlight Capital Management, opening a new position worth an estimated $11.4M. The largest seller was AQR Arbitrage, exiting entirely with an estimated $13.6M sold.

  • 65 institutional investors held Terrestrial Energy (IMSR) as of Q2 2025, up from 45 in Q1 2025.
  • Funds reported $210M of Terrestrial Energy stock for Q2 2025, down 1.8% quarter-over-quarter.
  • 29 funds opened new Terrestrial Energy positions in Q2 2025 and 9 closed out, a net change of +20 holders.
  • The largest Terrestrial Energy buyer in Q2 2025 was Vennlight Capital Management, an estimated $11.4M added.
  • The largest Terrestrial Energy seller in Q2 2025 was AQR Arbitrage, an estimated $13.6M sold.

Based on aggregated 13F filings for Q2 2025.