Ticker · CUSIP 042068205

ARM

ADR

ARM HOLDINGS PLC

Technology·Semiconductors

···Share

Holders (tracked)

Combined shares

19,734,855

Combined value

$2.16B

Last close

$166.73

Quarter

2025Q4

Price is +52.5% vs the avg quarter-end implied price across tracked holders.

Price · 1Y$166.73+66.00 (+65.52%)H $178.62 · L $96.83 · Avg Vol 5.3M

Insider sellCongress buyCongress sellPosition opened

Tracked holders · last 8 quarters

+2 vs previous quarter over the last 8.

SEC event timeline

30 events

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

Insider activity

Last 30 days

Net (open-market)

−$1.50M

Buys

0 · $0

Sells

3 · $1.50M

Unique insiders

Date	Insider	Code	Shares	Price	Value
04-14	Haas Rene A. Chief Executive Officer · Officer, Director	S	170	$163.00	$27.7K
04-14	Haas Rene A. Chief Executive Officer · Officer, Director	S	3,483	$161.21	$561.5K
04-14	Haas Rene A. Chief Executive Officer · Officer, Director	S	5,646	$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 each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.

Investor	First in	Cost basis	Return	Position value today
Wellington Management	2023Q3	$109.34	+52.5%	$358.3M
Two Sigma Investments	2025Q3	$111.23	+49.9%	$12.9M
Two Sigma Investments	2025Q3	$111.23	+49.9%	$12.9M
Two Sigma Investments	2025Q3	$111.23	+49.9%	$12.9M
D.E. Shaw & Co.	2024Q2	$113.09	+47.4%	$98.2M
D.E. Shaw & Co.	2024Q2	$113.09	+47.4%	$98.2M
D.E. Shaw & Co.	2024Q2	$113.09	+47.4%	$98.2M
Steve Cohen (Point72)	2023Q3	$113.30	+47.2%	$47.2M
Steve Cohen (Point72)	2023Q3	$113.30	+47.2%	$47.2M
Ken Griffin (Citadel Advisors)	2023Q3	$113.94	+46.3%	$592.2M
Ken Griffin (Citadel Advisors)	2023Q3	$113.94	+46.3%	$592.2M
Ken Griffin (Citadel Advisors)	2023Q3	$113.94	+46.3%	$592.2M
Izzy Englander (Millennium Mgmt)	2023Q3	$115.67	+44.1%	$97.7M
Izzy Englander (Millennium Mgmt)	2023Q3	$115.67	+44.1%	$97.7M
Izzy Englander (Millennium Mgmt)	2023Q3	$115.67	+44.1%	$97.7M
Paul Tudor Jones (Tudor Investment)	2023Q3	$133.20	+25.2%	$32.2M
Paul Tudor Jones (Tudor Investment)	2023Q3	$133.20	+25.2%	$32.2M
T. Rowe Price	2023Q3	$141.12	+18.2%	$79.5M
Baillie Gifford & Co	2025Q3	$141.49	+17.8%	$102.1M
Ken Fisher (Fisher Asset Mgmt)	2024Q2	$143.98	+15.8%	$456K
Renaissance Technologies	2024Q1	$147.93	+12.7%	$79.0M
Philippe Laffont (Coatue)	2025Q2	$160.82	+3.7%	$383.5M
Ray Dalio (Bridgewater Associates)	2025Q2	$161.74	+3.1%	$54.4M

Who moved on this name in 2025Q4

Position changes reported for the latest quarter, grouped by direction.

New positions3

Paul Tudor Jones (Tudor Investment)
+427,300
$46.7M
Ray Dalio (Bridgewater Associates)
+326,320
$35.7M
Ken Fisher (Fisher Asset Mgmt)
+2,732
$299K

Added to7

Two Sigma Investments
+1,049,744
$114.7M
Wellington Management
+633,009
$69.2M
Steve Cohen (Point72)
+597,100
$65.3M
Ken Griffin (Citadel Advisors)
+436,080
$47.7M
D.E. Shaw & Co.
+108,065
$11.8M
Philippe Laffont (Coatue)
+40,174
$4.4M
Izzy Englander (Millennium Mgmt)
+20,091
$2.2M

Trimmed3

Baillie Gifford & Co
−28,349
$3.1M
Renaissance Technologies
−21,800
$2.4M
T. Rowe Price
−46,374
$5K

Exited2

Brad Gerstner (Altimeter Capital)
−1,098,139
$155.4M
Stanley Druckenmiller (Duquesne)
−167,900
$24K

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.

Quarter	Holders	Shares	Combined value	Δ holders
2023Q3	16	14,650,965	$784.1M	—
2023Q4	7	6,190,198	$465.2M	-9
2024Q1	11	13,091,084	$1.64B	+4
2024Q2	17	17,371,649	$2.84B	+6
2024Q3	20	17,272,252	$2.47B	+3
2024Q4	17	12,474,667	$1.54B	-3
2025Q1	19	12,233,872	$1.31B	+2
2025Q2	19	18,880,601	$3.05B	—
2025Q3	21	17,474,035	$2.47B	+2
2025Q4	23	19,734,855	$2.16B	+2

Congress members trading this stock

Date	Member	Type	Amount range	Filing
2025-09-02	Jonathan Jackson	Sell	$1K – $15K	PDF ↗
2025-07-17	Jonathan Jackson	Buy	$1K – $15K	PDF ↗

Who owns ARM

23 super-investors · 2025Q4

Tracked stake

19.73M

Combined value

$2.16B

% of shares outstanding

—

shares-out unknown

Quarter action mix

New4Added16Trim3

#	Manager	Shares	Value	% of book	Last action
1	Ken Griffin Citadel Advisors	3.78M	$413M	0.1%	Added+436.1K
2	Ken Griffin Citadel Advisors	3.55M	$388M	0.1%	Added+436.1K
3	Philippe Laffont Coatue	2.30M	$251M	0.6%	Added+40.2K
4	Wellington Management	2.15M	$235M	0.0%	Added+633.0K
5	Two Sigma Investments	1.26M	$138M	0.2%	Added+1.05M
6	D.E. Shaw & Co.	1.22M	$133M	0.1%	Added+108.1K
7	Baillie Gifford & Co	612.5K	$67M	0.1%	Trim−28.3K
8	D.E. Shaw & Co.	588.7K	$64M	0.0%	Added+108.1K
9	Izzy Englander Millennium Mgmt	585.9K	$64M	0.0%	Added+20.1K
10	Ken Griffin Citadel Advisors	506.7K	$55M	0.0%	Added+436.1K
11	T. Rowe Price	477.0K	$52M	0.0%	Trim−46.4K
12	Renaissance Technologies	473.6K	$52M	0.1%	Trim−21.8K
13	Steve Cohen Point72	411.8K	$45M	0.1%	Added+597.1K
14	Izzy Englander Millennium Mgmt	353.8K	$39M	0.0%	Added+20.1K
15	Ray Dalio Bridgewater Associates	326.3K	$36M	0.1%	New+326.3K
16	Steve Cohen Point72	283.1K	$31M	0.0%	Added+597.1K
17	Paul Tudor Jones Tudor Investment	234.2K	$26M	0.0%	New+427.3K
18	Paul Tudor Jones Tudor Investment	193.1K	$21M	0.0%	New+427.3K
19	Izzy Englander Millennium Mgmt	143.7K	$16M	0.0%	Added+20.1K
20	D.E. Shaw & Co.	128.2K	$14M	0.0%	Added+108.1K
21	Two Sigma Investments	77.4K	$8M	0.0%	Added+1.05M
22	Two Sigma Investments	75.0K	$8M	0.0%	Added+1.05M
23	Ken Fisher Fisher Asset Mgmt	2.7K	$299K	0.0%	New+2.7K

Recent moves

20 transactions

SOLDBrad Gerstner (Altimeter Capital)
−1,098,139 · 2025Q4
TRIMT. Rowe Price
−46,374 · 2025Q4
ADDWellington Management
+633,009 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+20,091 · 2025Q4
ADDTwo Sigma Investments
+1,049,744 · 2025Q4
NEWPaul Tudor Jones (Tudor Investment)
+427,300 · 2025Q4
ADDKen Griffin (Citadel Advisors)
+436,080 · 2025Q4
ADDPhilippe Laffont (Coatue)
+40,174 · 2025Q4
SOLDStanley Druckenmiller (Duquesne)
−167,900 · 2025Q4
ADDSteve Cohen (Point72)
+597,100 · 2025Q4
ADDD.E. Shaw & Co.
+108,065 · 2025Q4
NEWRay Dalio (Bridgewater Associates)
+326,320 · 2025Q4
TRIMRenaissance Technologies
−21,800 · 2025Q4
NEWKen Fisher (Fisher Asset Mgmt)
+2,732 · 2025Q4
TRIMBaillie Gifford & Co
−28,349 · 2025Q4
ADDIzzy Englander (Millennium Mgmt)
+96,896 · 2025Q3
NEWTwo Sigma Investments
+209,411 · 2025Q3
NEWD.E. Shaw & Co.
+20,150 · 2025Q3
TRIMPhilippe Laffont (Coatue)
−2,373,628 · 2025Q3
ADDT. Rowe Price
+517,950 · 2025Q3

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