4 institutions reported holding $267,114 of THEMES ETF TR (PBRG) in SEC 13F filings for 2026-06-30. Largest institutional holders: GTS SECURITIES LLC ($203,787), Optiver Holding B.V. ($51,181), UBS Group AG ($12,146), SIMPLEX TRADING, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GTS SECURITIES LLC | $203,787 | 7,382 | Added |
| 2 | Optiver Holding B.V. | $51,181 | 1,854 | Trimmed |
| 3 | UBS Group AG | $12,146 | 440 | New |
| 4 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30