23 institutions reported holding $347,908 of MOLECULIN BIOTECH INC (MBRX) in SEC 13F filings for 2026-03-31. Largest institutional holders: SABBY MANAGEMENT, LLC ($171,798), GEODE CAPITAL MANAGEMENT, LLC ($74,033), VANGUARD CAPITAL MANAGEMENT LLC ($31,760), HRT FINANCIAL LP ($31,000), VANGUARD FIDUCIARY TRUST CO ($13,905). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | SABBY MANAGEMENT, LLC | $171,798 | 75,021 | New |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | $74,033 | 32,329 | Added |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | $31,760 | 13,869 | New |
| 4 | HRT FINANCIAL LP | $31,000 | 13,739 | New |
| 5 | VANGUARD FIDUCIARY TRUST CO | $13,905 | 6,072 | New |
| 6 | Rockefeller Capital Management L.P. | $10,124 | 4,421 | Added |
| 7 | UBS Group AG | $7,807 | 3,409 | Trimmed |
| 8 | Tower Research Capital LLC (TRC) | $4,202 | 1,835 | Added |
| 9 | BlackRock, Inc. | $1,124 | 491 | Trimmed |
| 10 | EFG International AG | $994 | 434 | Hold |
| 11 | Pinnacle Wealth Planning Services, Inc. | $643 | 281 | Hold |
| 12 | Newbridge Financial Services Group, Inc. | $261 | 114 | Hold |
| 13 | SBI Securities Co., Ltd. | $98 | 43 | Added |
| 14 | MORGAN STANLEY | $83 | 36 | Hold |
| 15 | Vanguard Global Advisers, LLC | $55 | 24 | New |
| 16 | FMR LLC | $7 | 3 | New |
| 17 | Caitong International Asset Management Co., Ltd | $5 | 2 | New |
| 18 | DANSKE BANK A/S | $5 | 2 | Hold |
| 19 | CVA Family Office, LLC | $2 | 1 | Hold |
| 20 | OSAIC HOLDINGS, INC. | $2 | 1 | Hold |
| 21 | BANK OF AMERICA CORP /DE/ | $0 | 0 | Exited |
| 22 | JANE STREET GROUP, LLC | $0 | 0 | Exited |
| 23 | CITADEL ADVISORS LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31