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Disclosery

IMSR TERRESTRIAL ENERGY INC

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COMMON STOCK (common), issuer CIK 2019804

83 managers (88 13F filers) reported a position in IMSR shares at 2026-03-31, 18,641,424 shares in all. 30 filers opened a position and 27 filers sold out during the quarter.

Managers
83
13F filers
88
New
30
Added
19
Reduced
22
Sold out
27
Shares held by filers
18,641,424

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
EXCHANGE TRADED CONCEPTS, LLC2,091,161$12.6M0.1%new13F-HRTimeline
VANGUARD GROUP INCgroup of 5 filers holding1,661,041$9.97MnewTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC1,277,258$7.67M0.01%-751,95013F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,214,777$7.29M0.01%+135,23113F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.1,120,885$6.73M<0.01%+28,38413F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO1,073,073$5.93M<0.01%-97,01413F-HR/ATimelineGroup
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.722,000$4.31M0.01%013F-HRTimelineGroup
LMR Partners LLPin group LMR Partners LLP690,702$4.15M0.04%+102,48813F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC659,388$3.96M<0.01%-136,93913F-HRTimelineGroup
Vennlight Capital Management, LP575,499$3.46M3.49%new13F-HRTimeline
UBS Group AGgroup of 2 filers holding557,077$3.35M+44,433Timeline
WINTON GROUP Ltdin group WINTON GROUP Ltd496,300$2.98M0.1%-149,89013F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…452,287$2.72M0.02%-283,75113F-HRTimelineGroup
Verition Fund Management LLC444,958$2.67M0.03%-308,84513F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC407,900$2.45M<0.01%+235,10013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC396,238$2.38M<0.01%+114,47413F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP345,520$2.07M<0.01%+18,82013F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co337,991$2.03M<0.01%-72,88613F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…330,276$1.98M<0.01%-18,25613F-HRTimelineGroup
Creek Drive Management Group LLC330,000$1.98M1.24%new13F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY285,549$1.71M<0.01%+163,24213F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC244,000$1.47M0.01%+219,11513F-HRTimelineGroup
HITE Hedge Asset Management LLC240,113$1.44M0.08%new13F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK225,974$1.36M<0.01%+200,97413F-HRTimelineGroup
Balyasny Asset Management L.P.in group Balyasny Asset Management205,903$1.24M<0.01%-1,195,05013F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC173,209$1.04M<0.01%+84,00213F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/132,750$797K<0.01%+65,02113F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP124,537$748K<0.01%-31,84013F-HRTimelineGroup
Yorkville Advisors Global, LP122,000$733K0.5%new13F-HRTimeline
Harraden Circle Investments, LLCin group Harraden Circle Investments, …122,000$733K0.15%013F-HRTimelineGroup
Shay Capital LLC118,086$709K0.1%-159,27713F-HRTimeline
COMMONWEALTH EQUITY SERVICES, LLC100,131$601K<0.01%+46,10813F-HRTimeline
Periscope Capital Inc.122,000$580K0.1%013F-HRTimeline
SONA ASSET MANAGEMENT (US) LLCin group SONA ASSET MANAGEMENT (US) LLC85,566$514K0.02%-14,43413F-HRTimelineGroup
K2 PRINCIPAL FUND, L.P.80,000$481K0.05%new13F-HRTimeline
TIEMANN INVESTMENT ADVISORS, LLC75,995$456K0.18%013F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP75,000$450K0.02%+25,00013F-HRTimeline
FNY Investment Advisers, LLC66,160$397K0.17%-23,84013F-HRTimeline
Massar Capital Management, LP65,000$390K0.08%013F-HRTimeline
CastleKnight Management LP60,700$365K0.02%013F-HRTimeline
Diametric Capital, LP59,191$355K0.09%new13F-HRTimeline
Swiss National Bank56,600$340K<0.01%new13F-HRTimeline
Mount Lucas Management LP51,500$309K0.11%+11,50013F-HRTimeline
MMCAP International Inc. SPCin group MMCAP44,279$266K0.02%-705,72113F-HRTimelineGroup
SIMON QUICK ADVISORS, LLC40,000$240K0.01%-5,00013F-HRTimeline
BLUEFIN CAPITAL MANAGEMENT, LLC32,463$195K0.19%new13F-HRTimeline
CALIFORNIA STATE TEACHERS RETIREMENT SY…31,276$188K<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC26,908$162K<0.01%+14,58913F-HRTimelineGroup
LPL Financial LLC26,704$160K<0.01%new13F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP26,277$158K<0.01%-4,61613F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA25,621$154K<0.01%-7,37113F-HRTimelineGroup
Brevan Howard Capital Management LPin group Brevan Howard Capital Managem…25,153$151K<0.01%-1,24713F-HRTimelineGroup
DRW Securities, LLC22,000$132K0.01%new13F-HRTimeline
FLOW TRADERS U.S. LLC21,530$129K<0.01%new13F-HRTimeline
IMC-Chicago, LLC21,157$127K<0.01%new13F-HRTimeline
Advisory Services Network, LLC20,935$126K<0.01%new13F-HRTimeline
Schonfeld Strategic Advisors LLC19,254$116K<0.01%+1,42613F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp17,035$102K<0.01%new13F-HRTimelineGroup
LEVEL FOUR ADVISORY SERVICES, LLCin group LEVEL FOUR ADVISORY SERVICES,…16,375$98.3K<0.01%new13F-HRTimelineGroup
T3 Companies, LLCin group T3 Companies, LLC16,295$97.9K0.13%-12,20513F-HRTimelineGroup
FLAX POND CAPITAL, LLC16,000$96.1K0.08%new13F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc15,229$91.5K<0.01%new13F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC12,619$75.8K0.01%new13F-HRTimeline
BANK OF MONTREAL /CAN/in group BANK OF MONTREAL /CAN/12,520$75.2K<0.01%new13F-HRTimelineGroup
TUDOR INVESTMENT CORP ET AL11,254$67.6K<0.01%new13F-HRTimeline
WealthPlan Investment Management, LLC10,206$61.3K<0.01%new13F-HRTimeline
FIRST FOUNDATION ADVISORSin group FIRST FOUNDATION ADVISORS10,000$60K<0.01%new13F-HRTimelineGroup
INSIGNEO ADVISORY SERVICES, LLC10,000$60K<0.01%new13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP8,653$52K<0.01%new13F-HRTimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/7,500$45K<0.01%-9,50013F-HRTimelineGroup
KLP KAPITALFORVALTNING AS6,300$37.8K<0.01%new13F-HRTimeline
Federation des caisses Desjardins du Qu…5,350$32.1K<0.01%+1,00013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.2,529$15.2K<0.01%+9813F-HRTimelineGroup
Anchor Investment Management, LLC2,100$12.6K<0.01%013F-HRTimeline
Cherry Tree Wealth Management, LLC692$4.16K<0.01%013F-HRTimeline
Farther Finance Advisors, LLC248$1.52K<0.01%013F-HRTimeline
Steward Partners Investment Advisory, L…200$1.2K<0.01%013F-HRTimeline
DB Fitzpatrick & Co, Inc150$901<0.01%+8013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…103$619<0.01%-1,57713F-HRTimelineGroup
Redwood Park Advisors LLC87$523<0.01%new13F-HRTimeline
Signature Resources Capital Management,…70$420<0.01%new13F-HRTimeline
Root Financial Partners, LLC50$300<0.01%013F-HRTimeline
CoreCap Advisors, LLC7$42<0.01%013F-HRTimeline