3 institutions reported holding $529,192 of SPINNAKER ETF SERIES (QIDX) in SEC 13F filings for 2026-03-31. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($284,928), GTS SECURITIES LLC ($239,765), UBS Group AG ($4,499). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $284,928 | 26,728 | Trimmed |
| 2 | GTS SECURITIES LLC | $239,765 | 22,492 | Trimmed |
| 3 | UBS Group AG | $4,499 | 422 | New |
Source: SEC Form 13F filings · as of 2026-03-31