4 institutions reported holding $55.0M of SPINNAKER ETF SERIES (KOOL) in SEC 13F filings for 2026-06-30. Largest institutional holders: Split Rock Private Trading & Wealth Management, LLC ($54.8M), GTS SECURITIES LLC ($229,629), Allworth Financial LP ($5,392), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Split Rock Private Trading & Wealth Management, LLC | $54.8M | 3.8M | Added |
| 2 | GTS SECURITIES LLC | $229,629 | 16,058 | New |
| 3 | Allworth Financial LP | $5,392 | 377 | New |
| 4 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30