4 institutions reported holding $19.1M of THEMES ETF TR (WLDU) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($9.5M), SIMPLEX TRADING, LLC ($5.4M), IMC-Chicago, LLC ($4.2M), UBS Group AG ($4,754). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | $9.5M | 310,800 | Trimmed |
| 2 | SIMPLEX TRADING, LLC | $5.4M | 238,000 | Added |
| 3 | IMC-Chicago, LLC | $4.2M | 229,500 | Trimmed |
| 4 | UBS Group AG | $4,754 | 273 | New |
Source: SEC Form 13F filings · as of 2026-06-30