6 institutions reported holding $51.8M of ISHARES TR (AMPS1) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($20.2M), GROUP ONE TRADING LLC ($19.2M), SIMPLEX TRADING, LLC ($11.1M), HRT FINANCIAL LP ($647,000), JPMORGAN CHASE & CO ($609,832). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $20.2M | 416,800 | Trimmed |
| 2 | GROUP ONE TRADING LLC | $19.2M | 393,100 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $11.1M | 230,000 | Trimmed |
| 4 | HRT FINANCIAL LP | $647,000 | 13,100 | New |
| 5 | JPMORGAN CHASE & CO | $609,832 | 12,400 | Trimmed |
| 6 | Marathon Trading Investment Management LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30