1 institutions reported holding $740 of GLENSTAR MINERALS INC (GSTRF) in SEC 13F filings for 2026-03-31. Largest institutional holders: Winch Advisory Services, LLC ($740). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Winch Advisory Services, LLC | $740 | 4,000 | New |
Source: SEC Form 13F filings · as of 2026-03-31