Who owns JBIO
120 institutions reported holding JBIO for 2026Q1, together 86% of the company, more than the 105 a quarter earlier.
120
Institutions reporting a position · as of 2026Q1 · up from 105 the quarter before
- Shares held by institutions
- 49.8M
Shares held by institutions · 86% of the company · long US equity positions only, as reported on Form 13F
- Reported value
- $715M
Reported value · at 2026-03-31 prices, not today's
- Top 5 holders
- 38%
Top 5 holders · of the whole company, between five filers
Details›
- Reporting quarter2026-03-31
- 2026Q1
- Quarters on record
- 4
- New positions
- 25
- Positions exited
- 13
- Added to
- 39
- Reduced
- 33
- Top 10 holdersof the company
- 57%
| Quarter | Filers | Shares | Reported value |
|---|---|---|---|
| 2026Q1 | 120 | 49.8M | $715M |
| 2025Q4 | 105 | 47.1M | $726M |
| 2025Q3 | 78 | 31.6M | $273M |
| 2025Q2 | 73 | 31.5M | $315M |
| Holder | Shares | % of company | Value |
|---|---|---|---|
| FMR LLC | 7.1M | 12% | $100M |
| Fairmount Funds Management LLC | 4.6M | 7.9% | $64M |
| RA CAPITAL MANAGEMENT, L.P. | 3.7M | 6.4% | $52M |
| Bellevue Group AG | 3.5M | 6.1% | $49M |
| Venrock Adviser, LLC | 3.2M | 5.6% | $45M |
| HENDERSON GROUP PLC | 3.1M | 5.4% | $44M |
| BlackRock Inc. | 2.3M | 4.0% | $33M |
| VANGUARD GROUP INC | 2.3M | 3.9% | $32M |
| BAKER BROS. ADVISORS LP | 1.6M | 2.8% | $23M |
| Remedium Capital Partners, LLC | 1.6M | 2.7% | $22M |
SEC Form 13F data sets (DERA bulk files). 13F is quarterly, filed up to 45 days late, and covers long US equity positions only, no shorts, no derivatives, nothing held below the reporting threshold.
reading the register…