IsoEnergy Ltd.
ISOU- Exchange
- NYSE
- Industry
- Miscellaneous Metal Ores
- SEC CIK
- 0001997377
No open-market purchases or sales by IsoEnergy Ltd. insiders were filed in the last 90 days; 48 institutions reported holding it in 13F filings for Q2 2026, worth $161.4M in total; no superinvestor holds it.
Q1 2026 vs. Q4 2025
How the institutions holding IsoEnergy Ltd. changed between Q4 2025 and Q1 2026.
All holders in Q1 2026All holders in Q4 2025
| Measure | Q4 2025 | Of which not filed for Q1 2026 | Q1 2026 | Change |
|---|---|---|---|---|
| Holders | 34 | 1 | 40 | +7 |
| Shares | 6.73M | 1.09K | 12.9M | +6.22M (+92.4%) |
| Value | $61.2M | $9.89K | $136.8M | +$75.6M (+123.6%) |
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.
New holders (11)
Institutions that held IsoEnergy Ltd. at the end of Q1 2026 but not at the end of Q4 2025.
| Institution | Shares | Value | % of portfolio |
|---|---|---|---|
| Van Eck Associates Corp | 2,343,511 | $24.8M | 0.02% |
| Manufacturers Life Insurance Company, The | 924,677 | $9.64M | 0.01% |
| Masters Capital Management LLC | 700,000 | $7.38M | 1.09% |
| Quadrature Capital Ltd | 97,300 | $1.03M | 0.01% |
| Citigroup Inc | 89,896 | $949.5K | 0.00% |
| Acasta Partners UK LLP | 80,000 | $847.4K | 0.32% |
| Bank of Montreal | 10,307 | $109.2K | 0.00% |
| Golden State Equity Partners | 1,087 | $11.5K | 0.00% |
| Cassaday & Co Wealth Management LLC | 475 | $5.02K | 0.00% |
| Advisory Services Network, LLC | 150 | $1.58K | 0.00% |
| Barclays PLC | 10 | $105 | 0.00% |
Sold out (4)
Institutions that held IsoEnergy Ltd. at the end of Q4 2025 and filed for Q1 2026 without it.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| MMCAP International Inc. SPC | 270,745 | $2.44M |
| Jane Street Group, LLC | 16,038 | $144.5K |
| Citadel Advisors LLC | 15,576 | $141.7K |
| Engineers Gate Manager LP | 11,155 | $100.7K |
Not filed for Q1 2026 yet (1)
Institutions that held IsoEnergy Ltd. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q4 2025 | Value, Q4 2025 |
|---|---|---|
| ORG Partners LLC | 1,087 | $9.89K |