2 institutions reported holding $29,058 of OUTLOOK THERAPEUTICS INC (OTLKW) in SEC 13F filings for 2026-03-31. Largest institutional holders: GROUP ONE TRADING LLC ($25,828), SIMPLEX TRADING, LLC ($3,230). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $25,828 | 125,500 | Trimmed |
| 2 | SIMPLEX TRADING, LLC | $3,230 | 15,700 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31