7 institutions reported holding $150.3M of INVESTMENT MANAGERS SER TR (XNDX) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($105.2M), SIMPLEX TRADING, LLC ($30.4M), GROUP ONE TRADING LLC ($13.5M), HRT FINANCIAL LP ($784,000), CITADEL ADVISORS LLC ($436,315). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $105.2M | 2.6M | Added |
| 2 | SIMPLEX TRADING, LLC | $30.4M | 796,900 | Added |
| 3 | GROUP ONE TRADING LLC | $13.5M | 429,900 | Added |
| 4 | HRT FINANCIAL LP | $784,000 | 18,900 | Trimmed |
| 5 | CITADEL ADVISORS LLC | $436,315 | 34,194 | New |
| 6 | Tower Research Capital LLC (TRC) | $1,276 | 100 | New |
| 7 | UBS Group AG | $408 | 32 | New |
来源：SEC 13F 申报文件 · 截至 2026-06-30