10 institutions reported holding $1.7M of THEMES ETF TR (NVDG) in SEC 13F filings for 2026-03-31. Largest institutional holders: Optiver Holding B.V. ($906,167), CITADEL ADVISORS LLC ($596,426), GROUP ONE TRADING LLC ($179,163), SIMPLEX TRADING, LLC ($3,321), OSAIC HOLDINGS, INC. ($1,799). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Optiver Holding B.V. | $906,167 | 65,483 | Added |
| 2 | CITADEL ADVISORS LLC | $596,426 | 43,100 | Added |
| 3 | GROUP ONE TRADING LLC | $179,163 | 12,947 | Added |
| 4 | SIMPLEX TRADING, LLC | $3,321 | 240 | Trimmed |
| 5 | OSAIC HOLDINGS, INC. | $1,799 | 130 | Added |
| 6 | SBI Securities Co., Ltd. | $1,467 | 106 | New |
| 7 | Tower Research Capital LLC (TRC) | $1,315 | 95 | New |
| 8 | BLUE BELL PRIVATE WEALTH MANAGEMENT, LLC | $747 | 54 | New |
| 9 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
| 10 | SIGNATUREFD, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31