2 institutions reported holding $70,404 of H2O AMERICA (SJW) in SEC 13F filings for 2026-03-31. Largest institutional holders: SIMPLEX TRADING, LLC ($58,670), GROUP ONE TRADING LLC ($11,734). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $58,670 | 1,000 | Trimmed |
| 2 | GROUP ONE TRADING LLC | $11,734 | 200 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31