Jade Biosciences, Inc.
Ownership
Ownership Structure
Who owns Jade Biosciences, Inc. (JBIO)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 81.7% of the shares are freely tradable; institutional investors hold 84.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| FMR Inc | 11.14 | 7,085,423 | +2.8 | 03/31/2026 |
| Fairmount Funds Management LLC | 7.16 | 4,553,494 | +0.0 | 03/31/2026 |
| RA Capital Management, LLC | 5.77 | 3,671,083 | +0.0 | 03/31/2026 |
| Bellevue Group AG | 5.51 | 3,501,502 | +4.8 | 03/31/2026 |
| VR Adviser, LLC | 5.06 | 3,220,364 | +0.0 | 03/31/2026 |
| HHG PLC | 4.88 | 3,105,669 | +0.0 | 03/31/2026 |
| Paradigm Biocapital Advisors LP | 4.49 | 2,857,405 | +0.0 | 06/30/2026 |
| BlackRock Inc | 3.64 | 2,313,949 | -19.4 | 03/31/2026 |
| Adage Capital Partners Gp LLC | 3.00 | 1,910,812 | +0.0 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Franklin US Small Cap Value Equity | 3.65 | 2,322,756 | +369.7 | 07/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.