16 institutions reported holding $2.6M of ROUNDHILL ETF TRUST (MAGY) in SEC 13F filings for 2026-06-30. Largest institutional holders: SUSQUEHANNA INTERNATIONAL GROUP, LLP ($969,586), Belvedere Trading LLC ($383,050), HRT FINANCIAL LP ($320,000), JANE STREET GROUP, LLC ($226,350), TWO SIGMA SECURITIES, LLC ($214,071). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $969,586 | 22,900 | Added |
| 2 | Belvedere Trading LLC | $383,050 | 9,047 | New |
| 3 | HRT FINANCIAL LP | $320,000 | 7,565 | Added |
| 4 | JANE STREET GROUP, LLC | $226,350 | 5,346 | New |
| 5 | TWO SIGMA SECURITIES, LLC | $214,071 | 5,056 | New |
| 6 | WINEBRENNER CAPITAL MANAGEMENT LLC | $211,700 | 5,000 | New |
| 7 | Sigma Planning Corp | $211,046 | 4,985 | New |
| 8 | OSAIC HOLDINGS, INC. | $48,691 | 1,150 | Trimmed |
| 9 | Truvestments Capital LLC | $42,340 | 1,000 | New |
| 10 | IFP Advisors, Inc | $9,315 | 220 | Hold |
| 11 | Asset Dedication, LLC | $2,117 | 50 | New |
| 12 | UBS Group AG | $1,905 | 45 | Trimmed |
| 13 | WELLS FARGO & COMPANY/MN | $99 | 2 | Added |
| 14 | MORGAN STANLEY | $85 | 2 | Added |
| 15 | OLD MISSION CAPITAL LLC | $0 | 0 | Exited |
| 16 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30