2 institutions reported holding $141.8M of HARBOR ETF TRUST (EFFE) in SEC 13F filings for 2026-06-30. Largest institutional holders: STATE OF WISCONSIN INVESTMENT BOARD ($141.5M), JANE STREET GROUP, LLC ($335,941). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | STATE OF WISCONSIN INVESTMENT BOARD | $141.5M | 5.1M | Hold |
| 2 | JANE STREET GROUP, LLC | $335,941 | 12,204 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30