21 institutions reported holding $336,891 of MYSEUM INC (MYSE) in SEC 13F filings for 2026-03-31. Largest institutional holders: GEODE CAPITAL MANAGEMENT, LLC ($191,026), VANGUARD CAPITAL MANAGEMENT LLC ($51,662), XTX Topco Ltd ($26,974), VANGUARD FIDUCIARY TRUST CO ($23,541), COMMONWEALTH EQUITY SERVICES, LLC ($19,020). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | GEODE CAPITAL MANAGEMENT, LLC | $191,026 | 121,673 | Added |
| 2 | VANGUARD CAPITAL MANAGEMENT LLC | $51,662 | 32,906 | New |
| 3 | XTX Topco Ltd | $26,974 | 17,181 | Added |
| 4 | VANGUARD FIDUCIARY TRUST CO | $23,541 | 14,994 | New |
| 5 | COMMONWEALTH EQUITY SERVICES, LLC | $19,020 | 12,116 | Hold |
| 6 | FNY Investment Advisers, LLC | $13,000 | 8,500 | New |
| 7 | OSAIC HOLDINGS, INC. | $5,972 | 3,805 | Trimmed |
| 8 | Tower Research Capital LLC (TRC) | $2,388 | 1,521 | Trimmed |
| 9 | TOTH FINANCIAL ADVISORY CORP | $1,256 | 800 | Hold |
| 10 | JONES FINANCIAL COMPANIES LLLP | $815 | 500 | Added |
| 11 | ASSETMARK, INC | $628 | 400 | Hold |
| 12 | IFP Advisors, Inc | $314 | 200 | Hold |
| 13 | SBI Securities Co., Ltd. | $177 | 113 | Hold |
| 14 | HARBOUR INVESTMENTS, INC. | $79 | 50 | New |
| 15 | UBS Group AG | $20 | 13 | Trimmed |
| 16 | Russell Investments Group, Ltd. | $19 | 12 | New |
| 17 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
| 18 | BANK OF AMERICA CORP /DE/ | $0 | 0 | Exited |
| 19 | Virtu Financial LLC | $0 | 0 | Exited |
| 20 | Royal Bank of Canada | $0 | 40 | Added |
| 21 | CITIGROUP INC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31