5 institutions reported holding $560.8M of DIREXION SHARES ETF TRUST (ZMLP) in SEC 13F filings for 2026-06-30. Largest institutional holders: IMC-Chicago, LLC ($336.1M), GROUP ONE TRADING LLC ($108.1M), SIMPLEX TRADING, LLC ($97.9M), HRT FINANCIAL LP ($13.1M), Optiver Holding B.V. ($5.7M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | IMC-Chicago, LLC | $336.1M | 9.5M | Added |
| 2 | GROUP ONE TRADING LLC | $108.1M | 3.2M | Trimmed |
| 3 | SIMPLEX TRADING, LLC | $97.9M | 4.1M | Added |
| 4 | HRT FINANCIAL LP | $13.1M | 374,800 | Added |
| 5 | Optiver Holding B.V. | $5.7M | 399,400 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30