4 institutions reported holding $407,744 of THEMES ETF TR (OPEG) in SEC 13F filings for 2026-06-30. Largest institutional holders: Optiver Holding B.V. ($227,015), Virtu Financial LLC ($177,000), UBS Group AG ($3,712), SIMPLEX TRADING, LLC ($17). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Optiver Holding B.V. | $227,015 | 51,496 | Added |
| 2 | Virtu Financial LLC | $177,000 | 40,120 | Added |
| 3 | UBS Group AG | $3,712 | 842 | New |
| 4 | SIMPLEX TRADING, LLC | $17 | 4 | New |
Source: SEC Form 13F filings · as of 2026-06-30