3 institutions reported holding $20.3M of NEOS ETF TRUST (KOCG) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($11.8M), GROUP ONE TRADING LLC ($5.9M), IMC-Chicago, LLC ($2.6M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $11.8M | 237,600 | Added |
| 2 | GROUP ONE TRADING LLC | $5.9M | 156,100 | Added |
| 3 | IMC-Chicago, LLC | $2.6M | 49,500 | Added |
Source: SEC Form 13F filings · as of 2026-06-30