44 institutions reported holding $114.0M of INVESTMENT MANAGERS SER TR I (APPX) in SEC 13F filings for 2026-03-31. Largest institutional holders: CITADEL ADVISORS LLC ($31.7M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($29.2M), IMC-Chicago, LLC ($11.4M), Optiver Holding B.V. ($8.8M), JANE STREET GROUP, LLC ($8.4M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $31.7M | 1.5M | Added |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $29.2M | 1.4M | Trimmed |
| 3 | IMC-Chicago, LLC | $11.4M | 529,249 | Added |
| 4 | Optiver Holding B.V. | $8.8M | 584,660 | Added |
| 5 | JANE STREET GROUP, LLC | $8.4M | 390,111 | Trimmed |
| 6 | RENAISSANCE TECHNOLOGIES LLC | $5.6M | 224,700 | Trimmed |
| 7 | UBS Group AG | $5.6M | 187,885 | Added |
| 8 | Belvedere Trading LLC | $2.8M | 175,546 | Trimmed |
| 9 | MIRAE ASSET SECURITIES (USA) INC. | $2.5M | 150,000 | New |
| 10 | GROUP ONE TRADING LLC | $2.5M | 141,837 | Trimmed |
| 11 | SIMPLEX TRADING, LLC | $1.6M | 80,496 | Added |
| 12 | Jump Financial, LLC | $1.3M | 42,972 | Added |
| 13 | GOLDMAN SACHS GROUP INC | $768,611 | 27,159 | New |
| 14 | HRT FINANCIAL LP | $549,000 | 26,297 | Trimmed |
| 15 | Headlands Technologies LLC | $299,432 | 12,177 | New |
| 16 | Scientech Research LLC | $274,726 | 25,135 | New |
| 17 | StoneX Group Inc. | $202,506 | 6,730 | Trimmed |
| 18 | TWO SIGMA SECURITIES, LLC | $144,458 | 13,641 | New |
| 19 | Avior Wealth Management, LLC | $118,044 | 10,800 | Added |
| 20 | Summit Financial, LLC | $98,982 | 11,700 | New |
| 21 | CITIGROUP INC | $51,501 | 1,891 | Added |
| 22 | JPMORGAN CHASE & CO | $27,060 | 1,000 | New |
| 23 | Innovative Asset Advisors Group, LLC | $13,280 | 800 | New |
| 24 | Redwood Park Advisors LLC | $11,857 | 482 | Hold |
| 25 | Tower Research Capital LLC (TRC) | $6,563 | 294 | Trimmed |
Source: SEC Form 13F filings · as of 2026-03-31