15 institutions reported holding $39.7M of GRANITESHARES ETF TR (MULL) in SEC 13F filings for 2026-03-31. Largest institutional holders: CITADEL ADVISORS LLC ($25.5M), JANE STREET GROUP, LLC ($5.8M), Belvedere Trading LLC ($3.0M), SIMPLEX TRADING, LLC ($1.1M), Optiver Holding B.V. ($1.1M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $25.5M | 240,088 | Added |
| 2 | JANE STREET GROUP, LLC | $5.8M | 54,995 | New |
| 3 | Belvedere Trading LLC | $3.0M | 28,052 | Trimmed |
| 4 | SIMPLEX TRADING, LLC | $1.1M | 10,747 | New |
| 5 | Optiver Holding B.V. | $1.1M | 10,719 | Added |
| 6 | BARCLAYS PLC | $1.1M | 10,060 | New |
| 7 | MIRAE ASSET SECURITIES (USA) INC. | $1.1M | 10,000 | New |
| 8 | SBI Securities Co., Ltd. | $321,101 | 3,019 | Added |
| 9 | Jump Financial, LLC | $275,473 | 2,590 | New |
| 10 | Csenge Advisory Group | $265,900 | 2,500 | New |
| 11 | GROUP ONE TRADING LLC | $41,055 | 386 | New |
| 12 | UBS Group AG | $12,763 | 120 | Trimmed |
| 13 | HOLLENCREST CAPITAL MANAGEMENT | $10,849 | 102 | Trimmed |
| 14 | MORGAN STANLEY | $319 | 3 | Trimmed |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31