MBIO Mustang Bio, Inc.
Mustang Bio, Inc. (MBIO) Institutional Ownership
What the institutions did with MBIO 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 |
|---|---|---|
| Kestra Advisory Services, LLC | 197.0K | 36.5% |
| BlackRock, Inc. | 84.7K | 15.7% |
| CITADEL ADVISORS LLC | 59.5K | 11.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 42.2K | 7.8% |
| CFO4Life Group, LLC | 33.5K | 6.2% |
| VANGUARD FIDUCIARY TRUST CO | 32.1K | 6.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 25.7K | 4.8% |
| XTX Topco Ltd | 14.6K | 2.7% |
| Virtu Financial LLC | 14.4K | 2.7% |
| TWO SIGMA SECURITIES, LLC | 13.7K | 2.5% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 13.7K | 2.5% |
| UBS Group AG | 4.2K | 0.8% |
| Tower Research Capital LLC (TRC) | 1.9K | 0.4% |
| BARCLAYS PLC | 1.1K | 0.2% |
| SBI Securities Co., Ltd. | 509 | 0.1% |
| MORGAN STANLEY | 118 | 0.0% |
| Cullen/Frost Bankers, Inc. | 13 | 0.0% |
| BNP PARIBAS FINANCIAL MARKETS | 6 | 0.0% |
| NBC SECURITIES, INC. | 3 | 0.0% |
| JPMORGAN CHASE & CO | 2 | 0.0% |
| DANSKE BANK A/S | 2 | 0.0% |
| OSAIC HOLDINGS, INC. | 2 | 0.0% |
| GROUP ONE TRADING LLC | 1 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 92.8K | 42.2K | -50.6K |
| Kestra Advisory Services, LLC | Increased | 176.0K | 197.0K | +20.9K |
| TWO SIGMA INVESTMENTS, LP | Sold Out | 16.8K | 0 | -16.8K |
| XTX Topco Ltd | New | 0 | 14.6K | +14.6K |
| Virtu Financial LLC | New | 0 | 14.4K | +14.4K |
| TWO SIGMA SECURITIES, LLC | New | 0 | 13.7K | +13.7K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | 0 | 13.7K | +13.7K |
| CFO4Life Group, LLC | Increased | 20.5K | 33.5K | +13.0K |
| CITADEL ADVISORS LLC | Increased | 53.2K | 59.5K | +6.3K |
| BARCLAYS PLC | New | 0 | 1.1K | +1.1K |
| UBS Group AG | Increased | 3.7K | 4.2K | +496 |
| MAI Capital Management | Sold Out | 3 | 0 | -3 |
| CITIGROUP INC | Sold Out | 1 | 0 | -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.