11 institutions reported holding $4.0M of PROSHARES TR (ION) in SEC 13F filings for 2026-06-30. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($1.7M), MOULTON WEALTH MANAGEMENT, INC ($1.3M), JANE STREET GROUP, LLC ($750,756), CITADEL ADVISORS LLC ($296,438), OSAIC HOLDINGS, INC. ($11,948). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.7M | 32,582 | Added |
| 2 | MOULTON WEALTH MANAGEMENT, INC | $1.3M | 22,588 | New |
| 3 | JANE STREET GROUP, LLC | $750,756 | 14,765 | Added |
| 4 | CITADEL ADVISORS LLC | $296,438 | 5,830 | New |
| 5 | OSAIC HOLDINGS, INC. | $11,948 | 234 | Added |
| 6 | UBS Group AG | $8,491 | 167 | Trimmed |
| 7 | Clearstead Advisors, LLC | $2,543 | 50 | Hold |
| 8 | JPMORGAN CHASE & CO | $449 | 9 | New |
| 9 | Kovack Advisors, Inc. | $0 | 0 | Exited |
| 10 | Moran Wealth Management, LLC | $0 | 0 | Exited |
| 11 | MORGAN STANLEY | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30