MAGX — Roundhill ETF Trust Institutional Holders · Q2 2026
Who owns Roundhill ETF Trust (MAGX)? 13 institutions reported holding $3.32M in SEC 13F filings for Q2 2026 (period ended 2026-06-30). Largest holders: Goldman Sachs Group Inc ($1.3M), Citadel Advisors LLC ($654,848), Belvedere Trading LLC ($537,180).
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GOLDMAN SACHS GROUP INC | $1.3M | 26,367 | New |
| 2 | CITADEL ADVISORS LLC | $654,848 | 12,800 | Added |
| 3 | Belvedere Trading LLC | $537,180 | 10,500 | New |
| 4 | Evernest Financial Advisors, LLC | $293,403 | 5,735 | New |
| 5 | FLOW TRADERS U.S. LLC | $225,000 | 4,403 | Trimmed |
| 6 | SIMPLEX TRADING, LLC | $167,242 | 3,269 | New |
| 7 | Physician Wealth Advisors, Inc. | $45,373 | 887 | Hold |
| 8 | Capital Investment Advisory Services, LLC | $25,580 | 500 | New |
| 9 | GROUP ONE TRADING LLC | $14,274 | 279 | Hold |
| 10 | UBS Group AG | $2,865 | 56 | Trimmed |
| 11 | Parallel Advisors, LLC | $2,623 | 51 | Hold |
| 12 | Qube Research & Technologies Ltd | $1,893 | 37 | New |
| 13 | 180 WEALTH ADVISORS, LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30