10 institutions reported holding $3.3M of GraniteShares 2x Long AAPL Daily ETF (AAPB) in SEC 13F filings for 2026-06-30. Largest institutional holders: CITADEL ADVISORS LLC ($1.5M), Optiver Holding B.V. ($1.2M), HRT FINANCIAL LP ($580,000), TOTH FINANCIAL ADVISORY CORP ($39,136), BANK OF MONTREAL /CAN/ ($34,002). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | CITADEL ADVISORS LLC | $1.5M | 44,757 | Added |
| 2 | Optiver Holding B.V. | $1.2M | 34,009 | Added |
| 3 | HRT FINANCIAL LP | $580,000 | 17,065 | New |
| 4 | TOTH FINANCIAL ADVISORY CORP | $39,136 | 1,151 | Added |
| 5 | BANK OF MONTREAL /CAN/ | $34,002 | 1,000 | Hold |
| 6 | SIMPLEX TRADING, LLC | $12,954 | 381 | Added |
| 7 | SBI Securities Co., Ltd. | $238 | 7 | Trimmed |
| 8 | HOLLENCREST CAPITAL MANAGEMENT | $0 | 0 | Exited |
| 9 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $0 | 0 | Exited |
| 10 | Belvedere Trading LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30