2 institutions reported holding $138,329 of SEANERGY MARITIME HLDGS CORP (SHIPW) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($119,527), GROUP ONE TRADING LLC ($18,802). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $119,527 | 8,900 | Trimmed |
| 2 | GROUP ONE TRADING LLC | $18,802 | 1,400 | New |
Source: SEC Form 13F filings · as of 2026-06-30