8 institutions reported holding $7.5M of GUARDIAN METAL RES PLC (GMTL) in SEC 13F filings for 2026-06-30. Largest institutional holders: ARDSLEY ADVISORY PARTNERS LP ($5.6M), Mercuria Capital Strategies, LLC ($952,455), Cambridge Investment Research Advisors, Inc. ($914,000), GAMMA Investing LLC ($17,807), Accordant Advisory Group Inc ($869). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | ARDSLEY ADVISORY PARTNERS LP | $5.6M | 400,000 | New |
| 2 | Mercuria Capital Strategies, LLC | $952,455 | 67,984 | Added |
| 3 | Cambridge Investment Research Advisors, Inc. | $914,000 | 65,216 | Added |
| 4 | GAMMA Investing LLC | $17,807 | 1,271 | New |
| 5 | Accordant Advisory Group Inc | $869 | 62 | New |
| 6 | Banque Cantonale Vaudoise | $227 | 16,200 | New |
| 7 | TD Asset Management Inc | $0 | 0 | Exited |
| 8 | Rachor Investment Advisory Services, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30