5 institutions reported holding $49.8M of SPINNAKER ETF SERIES (KOOL) in SEC 13F filings for 2026-03-31. Largest institutional holders: Split Rock Private Trading & Wealth Management, LLC ($49.6M), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($182,610), OLD MISSION CAPITAL LLC ($0), JANE STREET GROUP, LLC ($0), OSAIC HOLDINGS, INC. ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Split Rock Private Trading & Wealth Management, LLC | $49.6M | 3.8M | Trimmed |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $182,610 | 14,088 | Trimmed |
| 3 | OLD MISSION CAPITAL LLC | $0 | 0 | Exited |
| 4 | JANE STREET GROUP, LLC | $0 | 0 | Exited |
| 5 | OSAIC HOLDINGS, INC. | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31