MBRX Moleculin Biotech, Inc.
Moleculin Biotech, Inc. (MBRX) Institutional Ownership
What the institutions did with MBRX last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| GEODE CAPITAL MANAGEMENT, LLC | 47.3K | 25.4% |
| VANGUARD CAPITAL MANAGEMENT LLC | 42.2K | 22.7% |
| VANGUARD FIDUCIARY TRUST CO | 29.9K | 16.1% |
| XTX Topco Ltd | 22.9K | 12.3% |
| MORGAN STANLEY | 20.0K | 10.8% |
| Rockefeller Capital Management L.P. | 15.0K | 8.1% |
| Tower Research Capital LLC (TRC) | 3.5K | 1.9% |
| CITIGROUP INC | 2.7K | 1.4% |
| BARCLAYS PLC | 621 | 0.3% |
| BlackRock, Inc. | 491 | 0.3% |
| EFG International AG | 434 | 0.2% |
| JONES FINANCIAL COMPANIES LLLP | 360 | 0.2% |
| WELLS FARGO & COMPANY/MN | 200 | 0.1% |
| NFSG Corp | 114 | 0.1% |
| SBI Securities Co., Ltd. | 44 | 0.0% |
| DANSKE BANK A/S | 2 | 0.0% |
| OSAIC HOLDINGS, INC. | 1 | 0.0% |
| CVA Family Office, LLC | 1 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| SABBY MANAGEMENT, LLC | Sold Out | 75.0K | 0 | -75.0K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 13.9K | 42.2K | +28.3K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 6.1K | 29.9K | +23.8K |
| XTX Topco Ltd | New | 0 | 22.9K | +22.9K |
| MORGAN STANLEY | Increased | 36 | 20.0K | +20.0K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 32.3K | 47.3K | +14.9K |
| HRT FINANCIAL LP | Sold Out | 13.7K | 0 | -13.7K |
| Rockefeller Capital Management L.P. | Increased | 4.4K | 15.0K | +10.6K |
| UBS Group AG | Sold Out | 3.4K | 0 | -3.4K |
| CITIGROUP INC | New | 0 | 2.7K | +2.7K |
| Tower Research Capital LLC (TRC) | Increased | 1.8K | 3.5K | +1.7K |
| BARCLAYS PLC | New | 0 | 621 | +621 |
| JONES FINANCIAL COMPANIES LLLP | New | 0 | 360 | +360 |
| Pinnacle Wealth Planning Services, Inc. | Sold Out | 281 | 0 | -281 |
| WELLS FARGO & COMPANY/MN | New | 0 | 200 | +200 |
| Vanguard Global Advisers, LLC | Sold Out | 24 | 0 | -24 |
| FMR LLC | Sold Out | 3 | 0 | -3 |
| Caitong International Asset Management Co., Ltd | Sold Out | 2 | 0 | -2 |
| SBI Securities Co., Ltd. | Increased | 43 | 44 | +1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.