2 institutions reported holding $404,083 of SEANERGY MARITIME HLDGS CORP (SHIPW) in SEC 13F filings for 2026-03-31. Largest institutional holders: SIMPLEX TRADING, LLC ($404,083), GROUP ONE TRADING LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $404,083 | 31,300 | New |
| 2 | GROUP ONE TRADING LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31