3 institutions reported holding $202,699 of DELCATH SYS INC (DCTH1) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($120,864), SIMPLEX TRADING, LLC ($81,835), Accent Capital Management, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $120,864 | 9,600 | Trimmed |
| 2 | SIMPLEX TRADING, LLC | $81,835 | 6,500 | Trimmed |
| 3 | Accent Capital Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30