6 institutions reported holding $9.7M of ALPS ETF TR (TRSK) in SEC 13F filings for 2026-06-30. Largest institutional holders: SIMPLEX TRADING, LLC ($4.8M), IMC-Chicago, LLC ($3.2M), GROUP ONE TRADING LLC ($1.6M), SUMMIT SECURITIES GROUP LLC ($51,850), LuminArx Capital Management LP ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SIMPLEX TRADING, LLC | $4.8M | 92,800 | Added |
| 2 | IMC-Chicago, LLC | $3.2M | 62,000 | Added |
| 3 | GROUP ONE TRADING LLC | $1.6M | 30,800 | Added |
| 4 | SUMMIT SECURITIES GROUP LLC | $51,850 | 1,000 | New |
| 5 | LuminArx Capital Management LP | $0 | 0 | Exited |
| 6 | Accent Capital Management, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30