Latest Period
Q1 2026
Security Snapshot
IsoEnergy Ltd. - Common Shares (ISOU) Institutional Ownership
CUSIP: 46500E867
13F Institutional Holders and Ownership History from Q1 2025 to Q1 2026
Institutions Reporting
40
Shares (Excl. Options)
12,947,629
Price
$10.54
Save this security page for your next review
Keep this CUSIP in your watchlists so you can revisit quarter changes from one place. If you create an account from here, we will bring you back after verification.
- Security type / class
- Equity / Common Shares
- Symbol
- ISOU on NYSE
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 12,947,629
- Total 13F value
- $136,768,618
- Portfolio coverage rank
- 0%
- Share change
- +6,219,724
- Value change
- +$66,146,535
- Number of holders
- 40
- Shares outstanding
- 55,300,415
- SEC-reported price per share
- $12.20
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ISOU - IsoEnergy Ltd. - Common Shares is tracked under CUSIP 46500E867.
- 40 institutions reported positions in Q1 2026.
- 2 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 34 to 40 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $61,170,266 to $136,768,618.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 40 institutions filings for Q1 2026.
Security key
46500E867
Latest holder period
Q1 2026
13F holders
40
13D/G owners
2
CIK / CUSIP context first
Open Q1 2026 holders
ISOU full holder history
IsoEnergy Ltd. SEC filings
IsoEnergy Ltd. 13D/G history
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 46500E867:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
2
Security
ISOU
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| NexGen Energy Ltd. | 31% | $126,062,407 | 16,478,746 | NexGen Energy Ltd. | 24 Jun 2025 | |||
| Queen's Road Capital Investment Ltd. | 4.8% | -3.6% | $28,573,946 | -$803,507 | 2,665,480 | -2.7% | Queen's Road Capital Investment Ltd. | 31 Mar 2026 |
As of 31 Mar 2026, 40 institutional investors reported holding 12,947,629 shares of IsoEnergy Ltd. - Common Shares (ISOU). This represents 23% of the company’s total 55,300,415 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
23%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| L1 Capital Pty Ltd | 4.5% | 2,485,077 | +233% | 1% | $26,309,955 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 4.4% | 2,449,981 | +4.4% | 0.04% | $25,877,052 |
| VAN ECK ASSOCIATES CORP | 4.2% | 2,343,511 | 0.02% | $24,823,000 | |
| Vident Advisory, LLC | 1.9% | 1,024,326 | +32% | 0.09% | $10,819,079 |
| CIBC WORLD MARKET INC. | 1.9% | 1,023,369 | -5.3% | 0.02% | $10,837,478 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.7% | 924,677 | 0.01% | $9,643,964 | |
| MASTERS CAPITAL MANAGEMENT LLC | 1.3% | 700,000 | 1.1% | $7,378,000 | |
| UBS Group AG | 0.55% | 302,583 | +244% | 0% | $3,189,224 |
| Invst, LLC | 0.44% | 243,233 | +57% | 0.29% | $2,563,676 |
| STIFEL FINANCIAL CORP | 0.28% | 157,309 | -30% | 0% | $1,658,037 |
| PenderFund Capital Management Ltd. | 0.26% | 145,200 | +30% | 0.24% | $1,538,529 |
| BANK OF AMERICA CORP /DE/ | 0.2% | 112,090 | +14% | 0% | $1,181,429 |
| MORGAN STANLEY | 0.2% | 108,587 | +14% | 0% | $1,144,507 |
| INTACT INVESTMENT MANAGEMENT INC. | 0.2% | 108,581 | -43% | 0.03% | $1,150,186 |
| Banque Cantonale Vaudoise | 0.18% | 101,478 | +3.9% | 0.04% | $1,072,000 |
| Quadrature Capital Ltd | 0.18% | 97,300 | 0.01% | $1,027,697 | |
| CITIGROUP INC | 0.16% | 89,896 | 0% | $949,494 | |
| Acasta Partners UK LLP | 0.14% | 80,000 | 0.32% | $847,370 | |
| Themes Management Co LLC | 0.13% | 71,791 | +89% | 0.47% | $760,693 |
| SPROTT INC. | 0.12% | 66,444 | 0% | 0.02% | $701,659 |
| GOLDMAN SACHS GROUP INC | 0.1% | 55,775 | +45% | 0% | $587,869 |
| TD Asset Management Inc | 0.1% | 53,632 | +21% | 0% | $566,469 |
| MACKENZIE FINANCIAL CORP | 0.07% | 35,961 | +6.6% | 0% | $380,986 |
| Vontobel Holding Ltd. | 0.06% | 35,351 | +2.9% | 0% | $374,648 |
| OLD MISSION CAPITAL LLC | 0.06% | 32,141 | +5.2% | 0.01% | $338,766 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
5
Latest
Q1 2026
Rows shown
1-5 of 5
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 12,947,629 | $136,768,618 | +$66,146,535 | $10.54 | 40 |
| 2025 Q4 | 6,728,992 | $61,170,266 | +$13,138,508 | $9.10 | 34 |
| 2025 Q3 | 5,235,383 | $52,590,713 | +$8,176,503 | $10.00 | 33 |
| 2025 Q2 | 4,399,073 | $35,331,262 | +$35,323,414 | $7.14 | 20 |
| 2025 Q1 | 1,087 | $7,185 | +$7,185 | $6.61 | 1 |