Ticker · CUSIP 64125C109
···Share
Holders (tracked)
15
Combined shares
17,615,018
Combined value
$2.23B
Last close
$128.41
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
15162024Q12025Q4
Price is +1.4% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

25 events
  1. +19,524 shares · 2025Q4
    13F
  2. −994,491 shares · 2025Q4
    13F
  3. −713,528 shares · 2025Q4
    13F
  4. +498,058 shares · 2025Q4
    13F
  5. +637,246 shares · 2025Q4
    13F
  6. −534,344 shares · 2025Q4
    13F
  7. −67,202 shares · 2025Q4
    13F
  8. +7,133 shares · 2025Q4
    13F
  9. +126,952 shares · 2025Q4
    13F
  10. −48,576 shares · 2025Q4
    13F
  11. −179,500 shares · 2025Q4
    13F
  12. +1,146,896 shares · 2025Q4
    13F
  13. +17,447 shares · 2025Q4
    13F
  14. −2,967 shares · 2025Q3
    13F
  15. +1,263,633 shares · 2025Q3
    13F
  16. −217,009 shares · 2025Q3
    13F
  17. +347,565 shares · 2025Q3
    13F
  18. −219,726 shares · 2025Q3
    13F
  19. −217,096 shares · 2025Q3
    13F
  20. +14,095 shares · 2025Q3
    13F
  21. +51,900 shares · 2025Q3
    13F
  22. −972,856 shares · 2025Q3
    13F
  23. −10,196 shares · 2025Q3
    13F
  24. +7,255 shares · 2025Q3
    13F
  25. −98,501 shares · 2024Q3
    13F

Insider activity

No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of NBIX…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
T. Rowe Price2016Q1$27.03+375.0%$240.4M
Renaissance Technologies2017Q4$66.67+92.6%$287.5M
Wellington Management2016Q1$100.31+28.0%$224.0M
Ken Fisher (Fisher Asset Mgmt)2017Q3$113.14+13.5%$14.4M
Dodge & Cox2023Q3$122.89+4.5%$707.3M
AQR Capital Management2016Q1$130.78-1.8%$420.1M
Paul Tudor Jones (Tudor Investment)2017Q2$136.97-6.2%$2.5M
Izzy Englander (Millennium Mgmt)2016Q1$139.59-8.0%$56.9M
Two Sigma Investments2016Q3$141.03-8.9%$126.5M
Ray Dalio (Bridgewater Associates)2021Q2$141.06-9.0%$19.3M
Ken Griffin (Citadel Advisors)2016Q1$141.61-9.3%$10.2M
Ken Griffin (Citadel Advisors)2016Q1$141.61-9.3%$10.2M
Ken Griffin (Citadel Advisors)2016Q1$141.61-9.3%$10.2M
Jeremy Grantham (GMO)2025Q4$141.83-9.5%$916K
Norges Bank (Norway SWF)2016Q1$427.73-70.0%$147.3M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions3
Trimmed6
Exited0

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
16
$79.75B
2022Q2
16
$85.24B
2022Q3
13
$94.6M
2022Q4
14
$1.90B
2023Q1
15
$1.70B
2023Q2
15
$1.72B
2023Q3
18
$2.15B
2023Q4
16
$2.46B
2024Q1
16
$2.76B
2024Q2
17
$3.06B
2024Q3
16
$1.10B
2024Q4
16
$1.56B
2025Q1
15
$1.46B
2025Q2
13
$1.99B
2025Q3
13
$2.09B
2025Q4
15
$2.23B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-06-17Lisa McClainSell (P)$1K – $15KPDF ↗
2025-06-11Lisa McClainBuy$1K – $15KPDF ↗

Who owns NBIX

15 super-investors · 2025Q4
Tracked stake
17.62M
shares
Combined value
$2.23B
% of shares outstanding
shares-out unknown
Quarter action mix
New3Added4Trim8
#ManagerSharesValue
1Dodge & Cox5.51M$781M
2AQR Capital Management3.27M$463M
3Renaissance Technologies2.24M$318M
4Wellington Management1.74M$247M
5Norges Bank
Norway SWF
1.15M$163M
6Two Sigma Investments984.8K$140M
7Izzy Englander
Millennium Mgmt
442.9K$63M
8Ray Dalio
Bridgewater Associates
150.0K$21M
9Ken Fisher
Fisher Asset Mgmt
112.2K$16M
10Ken Griffin
Citadel Advisors
79.7K$11M
11Ken Griffin
Citadel Advisors
20.5K$3M
12Paul Tudor Jones
Tudor Investment
19.5K$3M
13Ken Griffin
Citadel Advisors
16.0K$2M
14Jeremy Grantham
GMO
7.1K$1M
15T. Rowe Price1.87M$266K

Recent moves

20 transactions
Embed this chart
Paste this iframe anywhere to embed the live NBIX chart.
<iframe src="https://openstocks.me/embed/stock/NBIX" width="100%" height="480" frameborder="0" loading="lazy" title="NBIX chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>