3 institutions reported holding $1.1M of OAKTREE SPECIALTY LENDING (OCSLL) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($901,470), IMC-Chicago, LLC ($199,398), SIMPLEX TRADING, LLC ($27,462). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $901,470 | 75,500 | Added |
| 2 | IMC-Chicago, LLC | $199,398 | 16,700 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $27,462 | 2,300 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30