2 institutions reported holding $500,690 of OUTLOOK THERAPEUTICS INC (OTLKW) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($371,105), GROUP ONE TRADING LLC ($129,585). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $371,105 | 233,400 | Added |
| 2 | GROUP ONE TRADING LLC | $129,585 | 81,500 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30