4 institutions reported holding $123,410 of THEMES ETF TR (GLGG) in SEC 13F filings for 2026-06-30. Largest institutional holders: Optiver Holding B.V. ($123,410), IMC-Chicago, LLC ($0), SIMPLEX TRADING, LLC ($0), CITIGROUP INC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Optiver Holding B.V. | $123,410 | 15,968 | Trimmed |
| 2 | IMC-Chicago, LLC | $0 | 0 | Exited |
| 3 | SIMPLEX TRADING, LLC | $0 | 0 | Exited |
| 4 | CITIGROUP INC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30