1 institutions reported holding $15,588 of FINANCIAL INSTITUTIONS INC (FIISP) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($15,588). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $15,588 | 400 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30