Ticker · CUSIP 10806X102
Holders (tracked)
16
Combined shares
27,983,474
Combined value
$1.85B
Last close
$77.51
Quarter
2025Q4
Tracked holders · last 8 quarters
+5 vs previous quarter over the last 8.
Price is +17.4% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
30 events
- Kumar Neil · Chief Executive Officer2026-04-10Sold $1.49M @ $74.60Insider sell
- Kumar Neil · Chief Executive Officer2026-04-10Sold $1.49M @ $74.60Insider sell
- Kumar Neil · Chief Executive Officer2026-04-09Sold $530.2K @ $73.64Insider sell
- Kumar Neil · Chief Executive Officer2026-04-09Sold $395.4K @ $74.60Insider sell
- Kumar Neil · Chief Executive Officer2026-04-09Sold $566.7K @ $75.55Insider sell
- Kumar Neil · Chief Executive Officer2026-04-09Sold $520.8K @ $73.64Insider sell
- Kumar Neil · Chief Executive Officer2026-04-09Sold $382.4K @ $74.57Insider sell
- Kumar Neil · Chief Executive Officer2026-04-09Sold $589.1K @ $75.53Insider sell
- +12,600 shares · 2025Q413F
- +698,182 shares · 2025Q413F
- D.E. Shaw & Co. trimmed2026-02-17−38,731 shares · 2025Q413F
- AQR Capital Management added2026-02-17+35,690 shares · 2025Q413F
- −1,583,915 shares · 2025Q413F
- Two Sigma Investments trimmed2026-02-17−381,894 shares · 2025Q413F
- Izzy Englander (Millennium Mgmt) trimmed2026-02-17−133,852 shares · 2025Q413F
- Steve Cohen (Point72) opened position2026-02-17+7,600 shares · 2025Q413F
- Wellington Management added2026-02-17+1,329,537 shares · 2025Q413F
- T. Rowe Price added2026-02-17+2,261,181 shares · 2025Q413F
- +43,172 shares · 2025Q413F
- Renaissance Technologies exited2026-02-12−322,246 shares · 2025Q413F
- Norges Bank (Norway SWF) opened position2026-02-10+1,527,028 shares · 2025Q413F
- +232,401 shares · 2025Q413F
- −124,068 shares · 2025Q313F
- AQR Capital Management trimmed2025-11-14−58,978 shares · 2025Q313F
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−450,021 shares · 2025Q313F
- Two Sigma Investments trimmed2025-11-14−10,126 shares · 2025Q313F
- D.E. Shaw & Co. added2025-11-14+171,509 shares · 2025Q313F
- −2,577,526 shares · 2025Q313F
- T. Rowe Price added2025-11-14+606,349 shares · 2025Q313F
- Wellington Management added2025-11-14+962,525 shares · 2025Q313F
Insider activity
Last 30 days
Net (open-market)
−$5.97M
Buys
0 · $0
Sells
8 · $5.97M
Unique insiders
1
| Date | Insider | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| 04-10 | Kumar Neil Chief Executive Officer · Officer, Director | S | 20,000 | $74.60 | $1.49M |
| 04-10 | Kumar Neil Chief Executive Officer · Officer, Director | S | 20,000 | $74.60 | $1.49M |
| 04-09 | Kumar Neil Chief Executive Officer · Officer, Director | S | 7,200 | $73.64 | $530.2K |
| 04-09 | Kumar Neil Chief Executive Officer · Officer, Director | S | 5,300 | $74.60 | $395.4K |
| 04-09 | Kumar Neil Chief Executive Officer · Officer, Director | S | 7,500 | $75.55 | $566.7K |
| 04-09 | Kumar Neil Chief Executive Officer · Officer, Director | S | 7,072 | $73.64 | $520.8K |
| 04-09 | Kumar Neil Chief Executive Officer · Officer, Director | S | 5,128 | $74.57 | $382.4K |
| 04-09 | Kumar Neil Chief Executive Officer · Officer, Director | S | 7,800 | $75.53 | $589.1K |
Follow-the-investor returns
If you'd copied each holder of BBIO…
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 | 2020Q1 | $0.45 | +17114.4% | $296.8M |
| Andreas Halvorsen (Viking Global) | 2019Q2 | $26.97 | +187.4% | $1.12B |
| Steve Cohen (Point72) | 2019Q2 | $34.26 | +126.2% | $295K |
| Steve Cohen (Point72) | 2019Q2 | $34.26 | +126.2% | $295K |
| Two Sigma Investments | 2020Q3 | $38.01 | +103.9% | $150.9M |
| Ken Fisher (Fisher Asset Mgmt) | 2021Q3 | $39.19 | +97.8% | $18.0M |
| Paul Tudor Jones (Tudor Investment) | 2021Q2 | $42.13 | +84.0% | $977K |
| D.E. Shaw & Co. | 2020Q1 | $42.83 | +81.0% | $171.6M |
| AQR Capital Management | 2020Q2 | $43.69 | +77.4% | $10.4M |
| Izzy Englander (Millennium Mgmt) | 2019Q2 | $49.27 | +57.3% | $2.8M |
| Wellington Management | 2024Q1 | $65.33 | +18.6% | $182.1M |
| Ken Griffin (Citadel Advisors) | 2020Q1 | $69.53 | +11.5% | $8.6M |
| Ken Griffin (Citadel Advisors) | 2020Q1 | $69.53 | +11.5% | $8.6M |
| Ken Griffin (Citadel Advisors) | 2020Q1 | $69.53 | +11.5% | $8.6M |
| Ray Dalio (Bridgewater Associates) | 2025Q4 | $76.49 | +1.3% | $3.3M |
| Norges Bank (Norway SWF) | 2019Q2 | $363.67 | -78.7% | $118.4M |
Who moved on this name in 2025Q4
13F transactions reported for the latest quarter, grouped by direction.
New positions6
- Norges Bank (Norway SWF)+1,527,028$116.8M
- Ken Griffin (Citadel Advisors)+698,182$53.4M
- Ken Fisher (Fisher Asset Mgmt)+232,401$17.8M
- Ray Dalio (Bridgewater Associates)+43,172$3.3M
- Paul Tudor Jones (Tudor Investment)+12,600$964K
- Steve Cohen (Point72)+7,600$581K
Added to3
- Wellington Management+1,329,537$101.7M
- AQR Capital Management+35,690$2.7M
- T. Rowe Price+2,261,181$173K
Trimmed4
- Andreas Halvorsen (Viking Global)−1,583,915$121.2M
- Two Sigma Investments−381,894$29.2M
- Izzy Englander (Millennium Mgmt)−133,852$10.2M
- D.E. Shaw & Co.−38,731$3.0M
Exited1
- Renaissance Technologies−322,246$16.7M
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 13 | $11.57B |
| 2022Q2 | 13 | $9.14B |
| 2022Q3 | 14 | $10.0M |
| 2022Q4 | 13 | $372.2M |
| 2023Q1 | 16 | $736.6M |
| 2023Q2 | 13 | $756.5M |
| 2023Q3 | 15 | $1.10B |
| 2023Q4 | 13 | $1.62B |
| 2024Q1 | 15 | $1.30B |
| 2024Q2 | 14 | $1.14B |
| 2024Q3 | 13 | $801.8M |
| 2024Q4 | 12 | $817.5M |
| 2025Q1 | 18 | $943.7M |
| 2025Q2 | 16 | $1.16B |
| 2025Q3 | 11 | $1.18B |
| 2025Q4 | 16 | $1.85B |
Congress members trading this stock
| Date | Member | Type | Amount range | Filing |
|---|---|---|---|---|
| 2026-03-19 | Gilbert Cisneros | Buy | $1K – $15K | PDF ↗ |
| 2026-03-18 | Gilbert Cisneros | Buy | $1K – $15K | PDF ↗ |
| 2026-03-03 | Gilbert Cisneros | Buy | $1K – $15K | PDF ↗ |
| 2025-09-22 | Gilbert Cisneros | Buy | $1K – $15K | PDF ↗ |
| 2025-08-08 | Gilbert Cisneros | Buy | $1K – $15K | PDF ↗ |
Who owns BBIO
16 super-investors · 2025Q4
Tracked stake
27.98M
shares
Combined value
$1.85B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New9Added3Trim4
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Andreas Halvorsen Viking Global | 14.39M | $1.10B |
| 2 | Wellington Management | 2.35M | $180M |
| 3 | D.E. Shaw & Co. | 2.21M | $169M |
| 4 | Two Sigma Investments | 1.95M | $149M |
| 5 | Norges Bank Norway SWF | 1.53M | $117M |
| 6 | Ken Griffin Citadel Advisors | 698.2K | $53M |
| 7 | Ken Griffin Citadel Advisors | 447.5K | $34M |
| 8 | Ken Fisher Fisher Asset Mgmt | 232.4K | $18M |
| 9 | AQR Capital Management | 134.5K | $10M |
| 10 | Ken Griffin Citadel Advisors | 111.4K | $9M |
| 11 | Ray Dalio Bridgewater Associates | 43.2K | $3M |
| 12 | Izzy Englander Millennium Mgmt | 36.6K | $3M |
| 13 | Paul Tudor Jones Tudor Investment | 12.6K | $964K |
| 14 | T. Rowe Price | 3.83M | $293K |
| 15 | Steve Cohen Point72 | 3.8K | $291K |
| 16 | Steve Cohen Point72 | 3.8K | $291K |
Recent moves
20 transactions
- −381,894 · 2025Q4
- +1,329,537 · 2025Q4
- +12,600 · 2025Q4
- +35,690 · 2025Q4
- TRIMD.E. Shaw & Co.−38,731 · 2025Q4
- −133,852 · 2025Q4
- +7,600 · 2025Q4
- −1,583,915 · 2025Q4
- +698,182 · 2025Q4
- +2,261,181 · 2025Q4
- +43,172 · 2025Q4
- −322,246 · 2025Q4
- +1,527,028 · 2025Q4
- +232,401 · 2025Q4
- −124,068 · 2025Q3
- +171,509 · 2025Q3
- −450,021 · 2025Q3
- −10,126 · 2025Q3
- −2,577,526 · 2025Q3
- +606,349 · 2025Q3
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