Terrestrial Energy Inc. /DE/ - Class A Ordinary Shares, par value $0.0001 per share (the "Shares") (HOND) Institutional Ownership

13F Institutional Holders and Ownership History from Q4 2024 to Q4 2025

Type / Class
Equity / Class A Ordinary Shares, par value $0.0001 per share (the "Shares")
Symbol
HOND
Shares outstanding
22,845,241
Price per share
$18.04
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
9,692,445
Total reported value
$159,050,655
% of total 13F portfolios
0%
Share change
-9,089,247
Value change
-$112,713,695
Number of holders
64
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Terrestrial Energy Inc. /DE/ - Class A Ordinary Shares, par value $0.0001 per share (the "Shares") (HOND) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Linden Capital L.P. 8.7% $21,640,000 2,000,000 Linden Advisors LP 26 Mar 2025
BARCLAYS PLC 6.2% 0% $15,368,295 1,420,360 0% Barclays PLC 31 Dec 2024
Magnetar Financial LLC 6.1% $15,508,543 1,397,166 MAGNETAR FINANCIAL LLC 30 Jun 2025
CITADEL ADVISORS LLC 5.4% $14,310,259 1,233,643 Kenneth Griffin 23 Sep 2025
First Trust Capital Management L.P. 4.7% -37% $11,889,476 -$7,523,891 1,071,124 -39% First Trust Capital Management L.P. 30 Jun 2025
PICTON MAHONEY ASSET MANAGEMENT 4.1% -50% $10,457,099 -$11,520,901 942,081 -52% Picton Mahoney Asset Management 30 Jun 2025
LMR Partners LLP 4.1% $10,448,286 941,287 LMR Partners LLP 30 Jun 2025
MERUS GLOBAL INVESTMENTS, LLC 3.8% -43% $9,613,244 -$6,816,621 866,058 -41% Merus Global Investments, LLC 30 Jun 2025
GOLDMAN SACHS GROUP INC 3.2% -40% $8,076,557 -$4,754,817 746,447 -37% THE GOLDMAN SACHS GROUP, INC. 31 Mar 2025
AQR CAPITAL MANAGEMENT LLC 0.01% -93% $16,084 -$14,288,198 1,449 -100% AQR Capital Management, LLC 30 Jun 2025

As of 30 Sep 2025, 64 institutional investors reported holding 9,692,445 shares of Terrestrial Energy Inc. /DE/ - Class A Ordinary Shares, par value $0.0001 per share (the "Shares") (HOND). This represents 42% of the company’s total 22,845,241 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Terrestrial Energy Inc. /DE/ - Class A Ordinary Shares, par value $0.0001 per share (the "Shares") (HOND) together control 38% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
D. E. Shaw & Co., Inc. 4.8% 1,092,495 +13% 0.01% $17,927,843
CITADEL ADVISORS LLC 4.5% 1,030,421 +1378% 0.01% $16,909,209
Balyasny Asset Management L.P. 3.8% 864,263 +59% 0.03% $14,182,556
LMR Partners LLP 3.2% 725,267 -23% 0.15% $11,901,631
MILLENNIUM MANAGEMENT LLC 2.8% 629,363 +215% 0.01% $10,327,847
SUSQUEHANNA INTERNATIONAL GROUP, LLP 2.6% 601,931 +3874% 0.01% $9,877,688
Vennlight Capital Management, LP 2.2% 500,000 -51% 11% $8,205,000
CANTOR FITZGERALD, L. P. 1.5% 341,328 -27% 0.11% $5,601,192
Davidson Kempner Capital Management LP 1.2% 270,540 0.08% $4,439,561
Sourcerock Group LLC 1.1% 257,900 0.29% $4,232,139
Alyeska Investment Group, L.P. 1.1% 244,672 0.01% $4,015,068
SIR Capital Management, L.P. 0.95% 217,600 0.32% $3,570,816
Linden Advisors LP 0.92% 209,426 -89% 0.02% $3,436,681
HRT FINANCIAL LP 0.9% 204,611 -11% 0.01% $3,357,000
Waratah Capital Advisors Ltd. 0.87% 198,188 0.22% $3,252,265
MOORE CAPITAL MANAGEMENT, LP 0.77% 175,000 0.06% $2,871,750
Shay Capital LLC 0.71% 162,146 -70% 0.48% $2,660,816
BERKLEY W R CORP 0.7% 160,672 -60% 0.17% $2,636,628
Magnetar Financial LLC 0.62% 142,304 -90% 0.01% $2,335,209
JANE STREET GROUP, LLC 0.56% 127,190 0% $2,087,187
WHITEBOX ADVISORS LLC 0.5% 115,000 -64% 0.04% $1,887,150
WEXFORD CAPITAL LP 0.45% 102,712 +2.7% 0.51% $1,685,500
HITE Hedge Asset Management LLC 0.45% 102,338 0.09% $1,679,367
Verition Fund Management LLC 0.44% 101,145 -33% 0.01% $1,659,789
SONA ASSET MANAGEMENT (US) LLC 0.44% 100,000 0.06% $1,641,000

Institutional Holders of Terrestrial Energy Inc. /DE/ - Class A Ordinary Shares, par value $0.0001 per share (the "Shares") (HOND) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 0 $0 -$287,175 $18.04 0
2025 Q3 9,692,445 $159,050,655 -$112,713,695 $16.41 64
2025 Q2 18,846,357 $210,170,197 -$11,832,062 $11.10 66
2025 Q1 20,242,674 $213,416,329 +$44,109,596 $10.52 45
2024 Q4 16,153,628 $161,851,362 +$159,600,690 $10.02 34