IMSRWTerrestrial Energy Inc.$0.69-2.77%
incl. div.
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
Holders:25
Total Value:$40,123,827
Total Shares:11,315,617
Institutional Ownership Trend
4 quarters
Holder Concentration
Across 25 13F filers
· Δ vs Mar 31, 2026
Top Holder
27.3%
−1.9 pts
Top 5
68.4%
+0.0 pts
Top 10
92.0%
−1.3 pts
HHI
1,324
Broadly held−83
Who Holds IMSRW
Last 4 quarters through Jun 30, 2026
Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory
records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book.
The quarter selector does not change this card.
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out.
The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later
quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type
comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster
current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and
book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none
was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Conviction and Crowding
24 13F filers, quarter ended Jun 30, 2026
Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts
filers with high turnover or that advise private funds on Form ADV.
Conviction holders
1
4.17% of filers hold it in their top 10
Mar 31, 2026: 0
Holders above 5%
0
median weight 0.023%
Mar 31, 2026: 0
Crowding
—
shares outstanding is an issuer-wide count, not one listing's
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
shares outstanding is an issuer-wide count, not one listing's
Top 10 holders
92.1%
of 13F shares, Herfindahl 0.139
Active holders
+2.7%
like-for-like share change of active filers
5% stakes on record
0
0 13D, 0 13G
How long holders have held itvalue-weighted 2.9 quarters
Under 1 year 100.0%1 to 3 years 0.000%3 years or more 0.000%Since coverage start 0.000%
Managers in the top fifth by current three-year FundScore alpha were net
buyers of $0
(0 buying, 0 selling).
Shared Holders
Companies IMSRW's active holders also own, quarter ended Jun 30, 2026
New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.
