3 institutions reported holding $504,558 of THEMES ETF TR (OKTG) in SEC 13F filings for 2026-06-30. Largest institutional holders: Optiver Holding B.V. ($486,887), SIMPLEX TRADING, LLC ($17,671), UBS Group AG ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Optiver Holding B.V. | $486,887 | 16,972 | Added |
| 2 | SIMPLEX TRADING, LLC | $17,671 | 616 | Added |
| 3 | UBS Group AG | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30