Ticker · CUSIP 042068205

ARM

ADR
ARM HOLDINGS PLC
Technology·Semiconductors
···Share
Holders (tracked)
23
Combined shares
19,734,855
Combined value
$2.11B
Last close
$162.33
Quarter
2025Q4
Tracked holders · last 8 quarters
+2 vs previous quarter over the last 8.
23112024Q12025Q4
Price is +52.2% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

30 events
  1. Haas Rene A. · Chief Executive Officer
    2026-04-14
    Sold $906.6K @ $160.57
    Insider sell
  2. Haas Rene A. · Chief Executive Officer
    2026-04-14
    Sold $561.5K @ $161.21
    Insider sell
  3. Haas Rene A. · Chief Executive Officer
    2026-04-14
    Sold $27.7K @ $163.00
    Insider sell
  4. T. Rowe Price trimmed2026-02-17
    −46,374 shares · 2025Q4
    13F
  5. Ken Griffin (Citadel Advisors) added2026-02-17
    +436,080 shares · 2025Q4
    13F
  6. D.E. Shaw & Co. added2026-02-17
    +108,065 shares · 2025Q4
    13F
  7. Philippe Laffont (Coatue) added2026-02-17
    +40,174 shares · 2025Q4
    13F
  8. Stanley Druckenmiller (Duquesne) exited2026-02-17
    −167,900 shares · 2025Q4
    13F
  9. Wellington Management added2026-02-17
    +633,009 shares · 2025Q4
    13F
  10. Brad Gerstner (Altimeter Capital) exited2026-02-17
    −1,098,139 shares · 2025Q4
    13F
  11. Two Sigma Investments added2026-02-17
    +1,049,744 shares · 2025Q4
    13F
  12. Paul Tudor Jones (Tudor Investment) opened position2026-02-17
    +427,300 shares · 2025Q4
    13F
  13. Izzy Englander (Millennium Mgmt) added2026-02-17
    +20,091 shares · 2025Q4
    13F
  14. Steve Cohen (Point72) added2026-02-17
    +597,100 shares · 2025Q4
    13F
  15. Ray Dalio (Bridgewater Associates) opened position2026-02-13
    +326,320 shares · 2025Q4
    13F
  16. Renaissance Technologies trimmed2026-02-12
    −21,800 shares · 2025Q4
    13F
  17. Ken Fisher (Fisher Asset Mgmt) opened position2026-02-09
    +2,732 shares · 2025Q4
    13F
  18. Baillie Gifford & Co trimmed2026-01-23
    −28,349 shares · 2025Q4
    13F
  19. Izzy Englander (Millennium Mgmt) added2025-11-14
    +96,896 shares · 2025Q3
    13F
  20. Two Sigma Investments opened position2025-11-14
    +209,411 shares · 2025Q3
    13F
  21. Stanley Druckenmiller (Duquesne) opened position2025-11-14
    +167,900 shares · 2025Q3
    13F
  22. Brad Gerstner (Altimeter Capital) added2025-11-14
    +164,931 shares · 2025Q3
    13F
  23. Paul Singer (Elliott Mgmt) exited2025-11-14
    −139,551 shares · 2025Q2
    13F
  24. D.E. Shaw & Co. opened position2025-11-14
    +20,150 shares · 2025Q3
    13F
  25. Philippe Laffont (Coatue) trimmed2025-11-14
    −2,373,628 shares · 2025Q3
    13F
  26. T. Rowe Price added2025-11-14
    +517,950 shares · 2025Q3
    13F
  27. Wellington Management added2025-11-14
    +456,479 shares · 2025Q3
    13F
  28. Renaissance Technologies added2025-11-13
    +308,800 shares · 2025Q3
    13F
  29. Ray Dalio (Bridgewater Associates) exited2025-11-13
    −473,725 shares · 2025Q3
    13F
  30. Baillie Gifford & Co opened position2025-10-31
    +640,877 shares · 2025Q3
    13F

Insider activity

Last 30 days
Net (open-market)
−$1.50M
Buys
0 · $0
Sells
3 · $1.50M
Unique insiders
1
DateInsiderCodeSharesPriceValue
04-14Haas Rene A.
Chief Executive Officer · Officer, Director
S170$163.00$27.7K
04-14Haas Rene A.
Chief Executive Officer · Officer, Director
S3,483$161.21$561.5K
04-14Haas Rene A.
Chief Executive Officer · Officer, Director
S5,646$160.57$906.6K
View full insider history for ARM →
Follow-the-investor returns
If you'd copied each holder of ARM…
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 Price2023Q3$0.14+114933.2%$77.4M
Wellington Management2023Q3$109.34+48.5%$348.9M
Two Sigma Investments2025Q3$111.23+45.9%$12.6M
Two Sigma Investments2025Q3$111.23+45.9%$12.6M
Two Sigma Investments2025Q3$111.23+45.9%$12.6M
D.E. Shaw & Co.2024Q2$113.09+43.5%$95.6M
D.E. Shaw & Co.2024Q2$113.09+43.5%$95.6M
D.E. Shaw & Co.2024Q2$113.09+43.5%$95.6M
Steve Cohen (Point72)2023Q3$113.30+43.3%$46.0M
Steve Cohen (Point72)2023Q3$113.30+43.3%$46.0M
Ken Griffin (Citadel Advisors)2023Q3$113.94+42.5%$576.6M
Ken Griffin (Citadel Advisors)2023Q3$113.94+42.5%$576.6M
Ken Griffin (Citadel Advisors)2023Q3$113.94+42.5%$576.6M
Izzy Englander (Millennium Mgmt)2023Q3$115.67+40.3%$95.1M
Izzy Englander (Millennium Mgmt)2023Q3$115.67+40.3%$95.1M
Izzy Englander (Millennium Mgmt)2023Q3$115.67+40.3%$95.1M
Paul Tudor Jones (Tudor Investment)2023Q3$133.20+21.9%$31.3M
Paul Tudor Jones (Tudor Investment)2023Q3$133.20+21.9%$31.3M
Baillie Gifford & Co2025Q3$141.49+14.7%$99.4M
Ken Fisher (Fisher Asset Mgmt)2024Q2$143.98+12.7%$443K
Renaissance Technologies2024Q1$144.84+12.1%$76.9M
Philippe Laffont (Coatue)2025Q2$160.82+0.9%$373.4M
Ray Dalio (Bridgewater Associates)2025Q2$161.74+0.4%$53.0M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions3
Added to7
Trimmed3
Exited2

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2023Q3
16
$742.9M
2023Q4
7
$444.4M
2024Q1
11
$1.51B
2024Q2
17
$2.82B
2024Q3
20
$2.47B
2024Q4
17
$1.52B
2025Q1
19
$1.30B
2025Q2
19
$3.05B
2025Q3
21
$2.38B
2025Q4
23
$2.11B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2025-09-02Jonathan JacksonSell$1K – $15KPDF ↗
2025-07-17Jonathan JacksonBuy$1K – $15KPDF ↗

Who owns ARM

23 super-investors · 2025Q4
Tracked stake
19.73M
shares
Combined value
$2.11B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New4Added16Trim3
#ManagerSharesValue
1Ken Griffin
Citadel Advisors
3.78M$413M
2Ken Griffin
Citadel Advisors
3.55M$388M
3Philippe Laffont
Coatue
2.30M$251M
4Wellington Management2.15M$235M
5Two Sigma Investments1.26M$138M
6D.E. Shaw & Co.1.22M$133M
7Baillie Gifford & Co612.5K$67M
8D.E. Shaw & Co.588.7K$64M
9Izzy Englander
Millennium Mgmt
585.9K$64M
10Ken Griffin
Citadel Advisors
506.7K$55M
11Renaissance Technologies473.6K$52M
12Steve Cohen
Point72
411.8K$45M
13Izzy Englander
Millennium Mgmt
353.8K$39M
14Ray Dalio
Bridgewater Associates
326.3K$36M
15Steve Cohen
Point72
283.1K$31M
16Paul Tudor Jones
Tudor Investment
234.2K$26M
17Paul Tudor Jones
Tudor Investment
193.1K$21M
18Izzy Englander
Millennium Mgmt
143.7K$16M
19D.E. Shaw & Co.128.2K$14M
20Two Sigma Investments77.4K$8M
21Two Sigma Investments75.0K$8M
22Ken Fisher
Fisher Asset Mgmt
2.7K$299K
23T. Rowe Price477.0K$52K

Recent moves

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