5 institutions reported holding $16.8M of THEMES ETF TR (XYZG) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($13.6M), GROUP ONE TRADING LLC ($1.7M), SIMPLEX TRADING, LLC ($912,886), Optiver Holding B.V. ($520,879), UBS Group AG ($2,747). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $13.6M | 530,000 | Added |
| 2 | GROUP ONE TRADING LLC | $1.7M | 100,100 | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $912,886 | 56,700 | Added |
| 4 | Optiver Holding B.V. | $520,879 | 31,853 | Added |
| 5 | UBS Group AG | $2,747 | 168 | New |
来源：SEC 13F 申报文件 · 截至 2026-06-30