8 institutions reported holding $1.3M of ROUNDHILL ETF TRUST (MAGX) in SEC 13F filings for 2026-03-31. Largest institutional holders: 180 WEALTH ADVISORS, LLC ($695,055), FLOW TRADERS U.S. LLC ($325,000), CITADEL ADVISORS LLC ($222,196), Physician Wealth Advisors, Inc. ($37,896), GROUP ONE TRADING LLC ($11,922). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | 180 WEALTH ADVISORS, LLC | $695,055 | 16,266 | Trimmed |
| 2 | FLOW TRADERS U.S. LLC | $325,000 | 7,607 | Trimmed |
| 3 | CITADEL ADVISORS LLC | $222,196 | 5,200 | Trimmed |
| 4 | Physician Wealth Advisors, Inc. | $37,896 | 887 | Added |
| 5 | GROUP ONE TRADING LLC | $11,922 | 279 | Hold |
| 6 | UBS Group AG | $4,273 | 100 | Added |
| 7 | Parallel Advisors, LLC | $2,191 | 51 | Hold |
| 8 | IFP Advisors, Inc | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31