FibrobiologicsFBLG
13F holders, Q2 2025 (June 30)58holders −7
13new positions
21sold out
3famous investors
$0.63avg. 13F price*
At the end of Q2 2025, 58 institutions reported holding Fibrobiologics Inc. (FBLG) in their 13F filings, down 7 from Q1 2025. 13 opened new positions and 21 sold out. The largest holders were Vanguard Group Inc. ($767K), Yorkville Advisors Global, LP ($525K) and BlackRock, Inc. ($467K). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Fibrobiologics Inc.
- CUSIP
- 31573L105
- Latest filing quarter
- Q4 2025
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 13 | $552K |
| Exits | 21 | $313K |
All 13F filers, Q1 2025 → Q2 2025: 1,356,397 shares bought and 2,664,480 shares sold, net −1,308,083 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 58 holders
| Vanguard Group Inc. | 0.00% | Reduce -13.1% | 1,233,781 | $767K |
| Yorkville Advisors Global, LP | 0.15% | — | 844,103 | $525K |
| BlackRock, Inc. | 0.00% | Reduce -57.5% | 750,898 | $467K |
| Millennium Management | 0.00% | New | 480,645 | $299K |
| Cascade Financial Partners, LLC | 0.02% | Add +11.7% | 290,581 | $181K |
| Geode Capital Management, LLC | 0.00% | Reduce -53.0% | 288,948 | $180K |
| Citadel Advisors | 0.00% | Add +383.9% | 233,369 | $145K |
| Goldman Sachs Group Inc. | 0.00% | Add +91.7% | 131,542 | $82K |
| Cerity Partners LLC | 0.00% | Add +37.1% | 128,109 | $80K |
| State Street Corp. | 0.00% | Reduce -79.6% | 115,500 | $72K |
| UBS Group AG | 0.00% | Reduce -2.3% | 110,274 | $69K |
| Optivise Advisory Services LLC | 0.04% | No change | 110,100 | $69K |
| Requisite Capital Management, LLC | 0.01% | No change | 109,713 | $68K |
| Susquehanna International Group, LLP | 0.00% | Add +201.4% | 106,100 | $66K |
| Ethos Financial Group, LLC | 0.01% | Add +100.0% | 48,848 | $64K |
| Jane Street Group, LLC | 0.00% | New | 96,110 | $60K |
| American Institute for Advanced Investment Management, LLP | 0.04% | No change | 88,206 | $55K |
| Marshall Wace, LLP | 0.00% | New | 78,618 | $49K |
| &partners | 0.00% | New | 70,000 | $44K |
| Y-Intercept (Hong Kong) Ltd | 0.00% | New | 59,539 | $37K |
| AQR Capital Management | 0.00% | Add +62.0% | 52,217 | $32K |
| Northern Trust Corp. | 0.00% | Reduce -76.7% | 48,112 | $30K |
| Bank of America Corp. | 0.00% | Reduce -48.1% | 47,750 | $30K |
| XTX Topco Ltd | 0.00% | Add +160.0% | 45,945 | $29K |
| Bridgeway Capital Management, LLC | 0.00% | Reduce -46.7% | 40,000 | $25K |
| RMR Wealth Builders | 0.00% | No change | 38,360 | $24K |
| HRT Financial LP | 0.00% | New | 37,802 | $23K |
| Concurrent Investment Advisors, LLC | 0.00% | No change | 35,283 | $22K |
| Qube Research & Technologies Ltd | 0.00% | New | 34,092 | $21K |
| Saxon Interests, Inc. | 0.01% | No change | 21,214 | $19K |
| NewEdge Advisors, LLC | 0.00% | No change | 22,906 | $14K |
| Cetera Investment Advisers | 0.00% | Add +10.9% | 19,006 | $12K |
| Raymond James Financial Inc. | 0.00% | No change | 18,642 | $12K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.00% | New | 16,494 | $10K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +58.8% | 15,220 | $9K |
| Flaharty Asset Management, LLC | 0.00% | No change | 14,702 | $9K |
| Cahaba Wealth Management, Inc. | 0.00% | No change | 14,702 | $9K |
| LPL Financial LLC | 0.00% | New | 12,570 | $8K |
| Brooklyn Investment Group | 0.00% | No change | 11,500 | $7K |
| Hantz Financial Services, Inc. | 0.00% | No change | 8,000 | $5K |
| Osaic Holdings, Inc. | 0.00% | Add +45.5% | 8,000 | $5K |
| Morgan Stanley | 0.00% | Reduce -83.1% | 6,204 | $4K |
| FMR LLC | 0.00% | Reduce -49.1% | 3,296 | $2K |
| Cwm, LLC | 0.00% | Add +12.0% | 3,620 | $2K |
| Grove Bank & Trust | 0.00% | No change | 2,000 | $1K |
| Cubist Systematic Strategies, LLC | 0.00% | New | 1,844 | $1K |
| BNP Paribas Financial Markets | 0.00% | Reduce -28.2% | 1,718 | $1K |
| Royal Bank of Canada | 0.00% | Add +63.3% | 1,896 | $1K |
| Wells Fargo & Company | 0.00% | Reduce -94.5% | 725 | $451 |
| Islay Capital Management, LLC | 0.00% | New | 450 | $280 |
| Allworth Financial LP | 0.00% | No change | 261 | $163 |
| Clearstead Advisors, LLC | 0.00% | New | 202 | $126 |
| True Wealth Design, LLC | 0.00% | Add +36.2% | 192 | $120 |
| Citigroup Inc. | 0.00% | Reduce -99.1% | 171 | $106 |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -20.8% | 122 | $76 |
| Deutsche Bank AG | 0.00% | Reduce -99.3% | 18 | $11 |
| Barclays PLC | 0.00% | Reduce -100.0% | 1 | $1 |
| IFP Advisors, Inc | 0.00% | New | 2 | $1 |
"% of holder's portfolio" is FBLG's weight in each manager's 13F, not the share of Fibrobiologics Inc. the manager owns.