STXX — Investment Managers Ser Tr I Institutional Holders · Q2 2026
Who owns Investment Managers Ser Tr I (STXX)? 3 institutions reported holding $3.13M in SEC 13F filings for Q2 2026 (period ended 2026-06-30). Largest holders: Citadel Advisors LLC ($2.4M), Susquehanna International Group, LLP ($677,830), Simplex Trading, LLC ($21,144).
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $2.4M | 40,548 | New |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $677,830 | 11,284 | New |
| 3 | SIMPLEX TRADING, LLC | $21,144 | 352 | New |
Source: SEC Form 13F filings · as of 2026-06-30