FBLG FibroBiologics, Inc.
FibroBiologics, Inc. (FBLG) Institutional Ownership
What the institutions did with FBLG 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 |
|---|---|---|
| Cascade Financial Partners, LLC | 108.8K | 38.2% |
| Fund Evaluation Group, LLC | 51.8K | 18.2% |
| GEODE CAPITAL MANAGEMENT, LLC | 30.3K | 10.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | 27.8K | 9.7% |
| Qube Research & Technologies Ltd | 24.3K | 8.5% |
| BlackRock, Inc. | 18.2K | 6.4% |
| BARCLAYS PLC | 7.2K | 2.5% |
| VANGUARD FIDUCIARY TRUST CO | 6.4K | 2.2% |
| Tower Research Capital LLC (TRC) | 4.7K | 1.7% |
| OSAIC HOLDINGS, INC. | 2.4K | 0.8% |
| ROYAL BANK OF CANADA | 1.5K | 0.5% |
| UBS Group AG | 1.1K | 0.4% |
| ISLAY CAPITAL MANAGEMENT, LLC | 169 | 0.1% |
| Grove Bank & Trust | 100 | 0.0% |
| BNP PARIBAS FINANCIAL MARKETS | 64 | 0.0% |
| Allworth Financial LP | 13 | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Cascade Financial Partners, LLC | Increased | 16.4K | 108.8K | +92.4K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 67.7K | 27.8K | -39.9K |
| Qube Research & Technologies Ltd | New | 0 | 24.3K | +24.3K |
| RENAISSANCE TECHNOLOGIES LLC | Sold Out | 16.0K | 0 | -16.0K |
| BARCLAYS PLC | New | 0 | 7.2K | +7.2K |
| BlackRock, Inc. | Reduced | 24.6K | 18.2K | -6.4K |
| UBS Group AG | Reduced | 5.7K | 1.1K | -4.6K |
| Tower Research Capital LLC (TRC) | Increased | 460 | 4.7K | +4.3K |
| OSAIC HOLDINGS, INC. | Increased | 154 | 2.4K | +2.3K |
| ROYAL BANK OF CANADA | Increased | 186 | 1.5K | +1.3K |
| NewEdge Advisors, LLC | Sold Out | 845 | 0 | -845 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 29.6K | 30.3K | +690 |
| Vanguard Global Advisers, LLC | Sold Out | 536 | 0 | -536 |
| Grove Bank & Trust | New | 0 | 100 | +100 |
| WELLS FARGO & COMPANY/MN | Sold Out | 10 | 0 | -10 |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 66 | 64 | -2 |
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.