3 institutions reported holding $695,556 of THEMES ETF TR (SPOG) in SEC 13F filings for 2026-06-30. Largest institutional holders: Optiver Holding B.V. ($658,217), Parallel Advisors, LLC ($31,304), SIMPLEX TRADING, LLC ($6,035). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Optiver Holding B.V. | $658,217 | 105,133 | Added |
| 2 | Parallel Advisors, LLC | $31,304 | 5,000 | New |
| 3 | SIMPLEX TRADING, LLC | $6,035 | 964 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30