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Terrestrial Energy Inc.

IMSR
Exchange
Nasdaq
Industry
Fabricated Plate Work (Boiler Shops)
SEC CIK
0002019804

No open-market purchases or sales by Terrestrial Energy Inc. insiders were filed in the last 90 days; 110 institutions reported holding it in 13F filings for Q2 2026, worth $151.3M in total; no superinvestor holds it.

Other share classesIMSRW

Q2 2026 vs. Q1 2026

How the institutions holding Terrestrial Energy Inc. changed between Q1 2026 and Q2 2026.

All holders in Q2 2026All holders in Q1 2026

13F holders of IMSR: Q1 2026 compared with Q2 2026
MeasureQ1 2026Q2 2026Change
Holders88110+22
Shares18.6M21.5M+2.90M (+15.6%)
Value$111.3M$151.3M+$40.0M (+36.0%)

New holders (38)

Institutions that held Terrestrial Energy Inc. at the end of Q2 2026 but not at the end of Q1 2026.

Institutions new to IMSR in Q2 2026
InstitutionSharesValue% of portfolio
HRT Financial LP1,125,849$7.97M0.01%
Pacer Advisors, Inc.574,618$4.07M0.01%
Highbridge Capital Management LLC244,000$1.71M0.06%
Jane Street Group, LLC240,719$1.70M0.00%
Millennium Management LLC96,035$679.9K0.00%
XTX Topco Ltd94,601$669.8K0.01%
Aquatic Capital Management LLC88,952$629.8K0.02%
Voloridge Investment Management, LLC83,374$590.3K0.00%
Engineers Gate Manager LP82,295$582.6K0.01%
Parallax Volatility Advisers, L.P.68,518$485.1K0.02%
AQR Capital Management LLC59,777$423.2K0.00%
Allstate Corp50,205$355.5K0.00%
ExodusPoint Capital Management, LP40,205$284.7K0.00%
Y-Intercept (Hong Kong) Ltd38,150$270.1K0.01%
Canada Pension Plan Investment Board29,000$205.3K0.00%
American Century Companies Inc26,768$189.5K0.00%
Foundations Investment Advisors, LLC21,000$148.7K0.00%
SLT Holdings LLC21,000$148.7K0.09%
Zurcher Kantonalbank (Zurich Cantonalbank)17,093$121.0K0.00%
Valeo Financial Advisors, LLC15,000$106.2K0.00%
DnB Asset Management AS11,430$80.9K0.00%
Cornerstone Advisory, LLC10,003$70.8K0.01%
Rockefeller Capital Management L.P.7,000$49.6K0.00%
US Bancorp4,500$31.9K0.00%
SkyView Investment Advisors, LLC3,844$27.0K0.02%
FMR LLC1,300$9.20K0.00%
SRS Capital Advisors, Inc.903$6.39K0.00%
EverSource Wealth Advisors, LLC594$4.21K0.00%
Caitong International Asset Management Co., Ltd447$3.17K0.00%
Essential Partners LLC407$2.88K0.00%
Barclays PLC354$2.51K0.00%
Parallel Advisors, LLC171$1.21K0.00%
Allworth Financial LP72$5100.00%
SJS Investment Consulting Inc.59$4180.00%
Quarry LP49$3470.00%
Hollencrest Capital Management30$2120.00%
Rothschild Investment LLC18$1270.00%
Clearstead Advisors, LLC10$710.00%

Sold out (16)

Institutions that held Terrestrial Energy Inc. at the end of Q1 2026 and filed for Q2 2026 without it.