Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

IsoEnergy Ltd.

CIK 0001997377ISOU· quarter ending 2026-06-30

Shares outstanding

54,928,896

as of 2025-12-31 · 40-F cover page, filed 2026-02-27

Held by 13F filers

16,201,117

29.5% of shares outstanding

Holders

+8 vs 2026-03-31 · 13 new, 5 exited

Value

$161.4M

shares +25.1% vs prior quarter

Share classes (cover page of the 40-F filed 2026-02-27, as of 2025-12-31)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	ISOU · NYSE	54,928,896	16,201,117	29.5%	48	46500E867

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	46500E867	COM NEW	48	16,201,117	54,928,896	29.5%	$161.4M	1 call / 0 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings. 1 further CUSIPs map to this company (mostly bonds) but no 13F filer held them this quarter.

Top holders (48 of 48 · 46500E867)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	VAN ECK ASSOCIATES CORP	4,566,386	8.31%	$45.5M	+2,222,875 (+94.9%)
2	L1 Capital Pty Ltd	2,778,857	5.06%	$27.7M	+293,780 (+11.8%)
3	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	2,481,841	4.52%	$24.7M	+31,860 (+1.3%)
4	Vident Advisory, LLC	1,250,237	2.28%	$12.5M	+225,911 (+22.1%)
5	CIBC WORLD MARKET INC.	1,014,328	1.85%	$10.1M	-9,041 (-0.9%)
6	MANUFACTURERS LIFE INSURANCE COMPANY, THE	932,342	1.70%	$9.0M	+7,665 (+0.8%)
7	MASTERS CAPITAL MANAGEMENT LLC	600,000	1.09%	$6.0M	-100,000 (-14.3%)
8	UBS Group AG	572,217	1.04%	$5.7M	+269,634 (+89.1%)
9	FIRETRAIL INVESTMENTS PTY LTD	293,110	0.53%	$2.9M	NEW
10	Invst, LLC	235,377	0.43%	$2.3M	-7,856 (-3.2%)
11	MIRABELLA FINANCIAL SERVICES LLP	158,600	0.29%	$1.6M	NEW
12	Acasta Partners UK LLP	150,700	0.27%	$1.5M	+70,700 (+88.4%)
13	GOLDMAN SACHS GROUP INC	139,417	0.25%	$1.4M	+83,642 (+150.0%)
14	PenderFund Capital Management Ltd.	139,300	0.25%	$1.4M	-5,900 (-4.1%)
15	CITIGROUP INC	110,179	0.20%	$1.1M	+20,283 (+22.6%)
16	Banque Cantonale Vaudoise	101,478	0.18%	$1.0M	—
17	INTACT INVESTMENT MANAGEMENT INC.	70,581	0.13%	$704K	-38,000 (-35.0%)
18	STIFEL FINANCIAL CORP	69,193	0.13%	$690K	-88,116 (-56.0%)
19	SPROTT INC.	66,969	0.12%	$669K	+525 (+0.8%)
20	TD Asset Management Inc	66,224	0.12%	$660K	+12,592 (+23.5%)
21	BANK OF AMERICA CORP /DE/	58,690	0.11%	$585K	-53,400 (-47.6%)
22	OLD MISSION CAPITAL LLC	58,183	0.11%	$580K	+26,042 (+81.0%)
23	MACKENZIE FINANCIAL CORP	45,626	0.08%	$645K	+9,665 (+26.9%)
24	Ausbil Investment Management Ltd	37,700	0.07%	$375K	NEW
25	Vontobel Holding Ltd.	34,651	0.06%	$345K	-700 (-2.0%)
26	Wealthspire Retirement, LLC	27,809	0.05%	$277K	+9 (+0.0%)
27	EAGLE GLOBAL ADVISORS LLC	26,625	0.05%	$265K	+7,600 (+39.9%)
28	Balyasny Asset Management L.P.	18,800	0.03%	$187K	NEW
29	HRT FINANCIAL LP	13,980	0.03%	$139K	NEW
30	Brevan Howard Capital Management LP	12,431	0.02%	$124K	NEW
31	MORGAN STANLEY	11,777	0.02%	$117K	-96,810 (-89.2%)
32	BANK OF MONTREAL /CAN/	11,491	0.02%	$114K	+1,184 (+11.5%)
33	SUSQUEHANNA INTERNATIONAL GROUP, LLP	10,636	0.02%	$106K	NEW
34	AMERICAN CENTURY COMPANIES INC	10,373	0.02%	$103K	NEW
35	Rockbridge Asset Management LLC	10,000	0.02%	$100K	—
36	ROYAL BANK OF CANADA	7,500	0.01%	$75K	+3,298 (+78.5%)
37	Trifecta Capital Advisors, LLC	2,300	0.00%	$23K	NEW
38	NATIONAL BANK OF CANADA /FI/	1,882	0.00%	$18K	+83 (+4.6%)
39	SIMPLEX TRADING, LLC	1,301	0.00%	$13K	NEW
40	BNP PARIBAS FINANCIAL MARKETS	951	0.00%	$9K	NEW
41	NATIXIS	399	0.00%	$4K	—
42	Fairscale Capital, LLC	374	0.00%	$4K	—
43	Cassaday & Co Wealth Management LLC	250	0.00%	$2K	-225 (-47.4%)
44	Federation des caisses Desjardins du Quebec	25	0.00%	$242	—
45	TD Waterhouse Canada Inc.	16	0.00%	$157	+8 (+100.0%)
46	BARCLAYS PLC	9	0.00%	$90	-1 (-10.0%)
47	Caitong International Asset Management Co., Ltd	1	0.00%	$10	NEW
48	Purpose Unlimited Inc.	1	0.00%	$10	NEW

Exited since 2026-03-31 (5 filers; largest 5 shown)

Quadrature Capital Ltd	−97,300
Themes Management Co LLC	−71,791
J.W. COLE ADVISORS, INC.	−23,675
Ascentis Independent Advisors	−1,087
Advisory Services Network, LLC	−150

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
Van Eck Associates Corporation	SCHEDULE 13G	2026-08-14	2026-06-30	4,566,386	7.5%
Queen's Road Capital Investment Ltd.	SCHEDULE 13G/A	2026-05-14	2026-03-31	2,665,480	4.82%
NexGen Energy Ltd.	SCHEDULE 13D	2025-06-25	2025-06-24	16,478,746	30.9%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.