Ticker · CUSIP 008064206
Holders (tracked)
9
Combined shares
915,424
Combined value
$13.74M
Last close
$21.88
Quarter
2025Q4
Tracked holders · last 8 quarters
+6 vs previous quarter over the last 3.
Price is +45.8% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
10 events
- +36,055 shares · 2025Q413F
- T. Rowe Price added2026-02-17+8,913 shares · 2025Q413F
- +24,200 shares · 2025Q413F
- Wellington Management trimmed2026-02-17−4,933 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−8,114 shares · 2025Q413F
- +62,809 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+558,474 shares · 2025Q413F
- Renaissance Technologies opened position2026-02-12+69,601 shares · 2025Q413F
- Two Sigma Investments opened position2025-11-14+24,610 shares · 2025Q313F
- Wellington Management opened position2025-11-14+107,553 shares · 2025Q313F
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of JBIO…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| T. Rowe Price | 2025Q2 | $0.01 | +183005.1% | $551K |
| Two Sigma Investments | 2025Q3 | $8.63 | +153.5% | $361K |
| Wellington Management | 2025Q3 | $8.63 | +153.5% | $2.2M |
| Renaissance Technologies | 2025Q4 | $15.43 | +41.8% | $1.5M |
| Paul Tudor Jones (Tudor Investment) | 2025Q4 | $15.43 | +41.8% | $529K |
| Paul Tudor Jones (Tudor Investment) | 2025Q4 | $15.43 | +41.8% | $529K |
| Steve Cohen (Point72) | 2025Q4 | $15.43 | +41.8% | $12.2M |
| Izzy Englander (Millennium Mgmt) | 2025Q4 | $15.43 | +41.8% | $1.4M |
| Ken Griffin (Citadel Advisors) | 2025Q4 | $15.43 | +41.8% | $789K |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions5
- Steve Cohen (Point72)+558,474$8.6M
- Renaissance Technologies+69,601$1.1M
- Izzy Englander (Millennium Mgmt)+62,809$969K
- Ken Griffin (Citadel Advisors)+36,055$556K
- Paul Tudor Jones (Tudor Investment)+24,200$373K
Added to1
- T. Rowe Price+8,913$138
Trimmed2
- Two Sigma Investments−8,114$125K
- Wellington Management−4,933$76K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2025Q2 | 1 | $163 |
| 2025Q3 | 3 | $1.1M |
| 2025Q4 | 9 | $13.7M |
Who owns JBIO
9 super-investors · 2025Q4
Tracked stake
915.4K
shares
Combined value
$14M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New6Added1Trim2
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Steve Cohen Point72 | 558.5K | $9M |
| 2 | Wellington Management | 102.6K | $2M |
| 3 | Renaissance Technologies | 69.6K | $1M |
| 4 | Izzy Englander Millennium Mgmt | 62.8K | $969K |
| 5 | Ken Griffin Citadel Advisors | 36.1K | $556K |
| 6 | Paul Tudor Jones Tudor Investment | 24.2K | $373K |
| 7 | Paul Tudor Jones Tudor Investment | 20.0K | $309K |
| 8 | Two Sigma Investments | 16.5K | $255K |
| 9 | T. Rowe Price | 25.2K | $389 |
Recent moves
11 transactions
- +36,055 · 2025Q4
- +558,474 · 2025Q4
- +8,913 · 2025Q4
- +24,200 · 2025Q4
- −4,933 · 2025Q4
- −8,114 · 2025Q4
- +62,809 · 2025Q4
- +69,601 · 2025Q4
- +24,610 · 2025Q3
- +107,553 · 2025Q3
- +16,256 · 2025Q2
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