9 institutions reported holding $1.1M of THEMES ETF TR (AVGG) in SEC 13F filings for 2026-03-31. Largest institutional holders: CITADEL ADVISORS LLC ($741,680), Optiver Holding B.V. ($301,305), SIMPLEX TRADING, LLC ($45,130), Larson Financial Group LLC ($14,448), SBI Securities Co., Ltd. ($3,678). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $741,680 | 36,500 | Added |
| 2 | Optiver Holding B.V. | $301,305 | 14,828 | Added |
| 3 | SIMPLEX TRADING, LLC | $45,130 | 2,221 | New |
| 4 | Larson Financial Group LLC | $14,448 | 711 | Added |
| 5 | SBI Securities Co., Ltd. | $3,678 | 181 | New |
| 6 | CITIGROUP INC | $0 | 0 | Exited |
| 7 | UBS Group AG | $0 | 0 | Exited |
| 8 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
| 9 | HRT FINANCIAL LP | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31