8 institutions reported holding $702,789 of HARBOR LONG-SHORT EQUITY ETF (LSEQ) in SEC 13F filings for 2026-03-31. Largest institutional holders: GTS SECURITIES LLC ($424,692), SUSQUEHANNA INTERNATIONAL GROUP, LLP ($222,370), MORGAN DEMPSEY CAPITAL MANAGEMENT LLC ($55,727), UBS Group AG ($0), MassMutual Private Wealth & Trust, FSB ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GTS SECURITIES LLC | $424,692 | 12,775 | Trimmed |
| 2 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $222,370 | 6,689 | New |
| 3 | MORGAN DEMPSEY CAPITAL MANAGEMENT LLC | $55,727 | 1,676 | Hold |
| 4 | UBS Group AG | $0 | 0 | Exited |
| 5 | MassMutual Private Wealth & Trust, FSB | $0 | 0 | Exited |
| 6 | HighTower Advisors, LLC | $0 | 0 | Exited |
| 7 | Signature Equity Partners, LLC | $0 | 0 | Exited |
| 8 | WELCH & FORBES LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31