How many institutional investors hold ARM?

6 tracked institutional investors disclosed a position in ARM (ARM HOLDINGS PLC) in their most recent 13F filing.

Who is the largest institutional holder of ARM?

Ken Griffin, Citadel Advisors, holds the largest disclosed position in ARM, valued at $988M.

Where does this ARM ownership data come from?

SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.

ARM — ARM HOLDINGS PLC

Name: ARM HOLDINGS PLC (ARM) — Institutional Ownership
Creator: InvestorLens
License: https://www.sec.gov/about/website-policies

Public company

For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying ARM?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence

Institutional Conviction

Strong accumulation · 4 buying vs 0 selling last quarter

Macro Tailwind

Macro conditions are mixed for this sector

Why? — Evidence & Confidence ▾

Of 4 tracked investors who changed their ARM position last quarter, 4 bought and 0 sold (100% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 52/100 in a Squeeze regime).

Supporting evidence

+4 tracked investors added or increased positions last quarter (Izzy Englander, Steve Cohen, Stanley Druckenmiller, …)
+6 tracked investors reported holding ARM at their latest filing

Contradicting evidence — always shown

−13F data is disclosed up to 45 days after quarter end — positions may have changed since

Know the limits

· 13F disclosure lag (up to 45 days)
· Tracked investors are a sample, not the whole market
· Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 8/4/2026.

About ARM HOLDINGS PLC (ARM)

ARM HOLDINGS PLC (ARM) appears in the most recent 13F filings of 6 tracked institutional investors. The largest disclosed position is held by Ken Griffin (Citadel Advisors), valued at $988M. Across recent filings, tracked investors recorded 9 new positions, 1 increased, 1 reduced, and 1 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in ARM

/100

Strong Institutional Accumulation

Added / Increased10

Reduced1

Exited1

BearishBullish

Crowded Trade Score™

How many top investors track ARM

/100

Moderate Interest

6investors

Several tracked investors have exposure.

UndiscoveredCrowded

151015+

ARM Ownership Composition

How ARM HOLDINGS PLC is held across tracked investor types, based on reported 13F positions.

Dominant Type

Other

92% of tracked value

Institutions

tracked investors

Total Reported

$1.7B

combined 13F value

Other91.9%
Hedge Funds8.1%

Other(5)

91.9%

Hedge Funds(1)

8.1%

Tracked investors reporting ARM

Investor	Firm	Shares	Market value	% of portfolio	As of
Ken Griffin	Citadel Advisors	6.5M	$988.1M	0.16%	Mar 31, 2026
Philippe Laffont	Coatue Management	2.3M	$251.4M	0.63%	Dec 31, 2025
Izzy Englander	Millennium Management	1.3M	$191.5M	0.08%	Mar 31, 2026
Steve Cohen	Point72 Asset Management	892K	$134.9M	0.17%	Mar 31, 2026
Ray Dalio	Bridgewater Associates	593.4K	$89.8M	0.40%	Mar 31, 2026
Stanley Druckenmiller	Duquesne Family Office	106.7K	$16.1M	0.48%	Mar 31, 2026

Ken GriffinMar 31, 2026
Citadel Advisors
Shares
6.5M
Value
$988.1M
% Portfolio
0.16%
Philippe LaffontDec 31, 2025
Coatue Management
Shares
2.3M
Value
$251.4M
% Portfolio
0.63%
Izzy EnglanderMar 31, 2026
Millennium Management
Shares
1.3M
Value
$191.5M
% Portfolio
0.08%
Steve CohenMar 31, 2026
Point72 Asset Management
Shares
892K
Value
$134.9M
% Portfolio
0.17%
Ray DalioMar 31, 2026
Bridgewater Associates
Shares
593.4K
Value
$89.8M
% Portfolio
0.40%
Stanley DruckenmillerMar 31, 2026
Duquesne Family Office
Shares
106.7K
Value
$16.1M
% Portfolio
0.48%

Recent activity

Investor	Action	Δ %	Current value	Filing date
Izzy Englander	New	—	$118.4M	Feb 17, 2026
Izzy Englander	New	—	$191.5M	May 15, 2026
Steve Cohen	New	—	$76M	Feb 17, 2026
Philippe Laffont	New	—	$251.4M	May 15, 2026
Steve Cohen	New	—	$134.9M	May 15, 2026
Stanley Druckenmiller	New	—	$16.1M	May 15, 2026
Ray Dalio	Increased	81.83%	$89.8M	May 15, 2026
Ken Griffin	Reduced	-5.05%	$857K	Feb 17, 2026
Stanley Druckenmiller	Sold	-100.00%	$0	Feb 17, 2026
Ray Dalio	New	—	$35.7K	Feb 13, 2026
Ken Griffin	New	—	$1.2M	Nov 14, 2025
Stanley Druckenmiller	New	—	$23.8M	Nov 14, 2025

Izzy Englander
New
$118.4MFeb 17, 2026
Izzy Englander
New
$191.5MMay 15, 2026
Steve Cohen
New
$76MFeb 17, 2026
Philippe Laffont
New
$251.4MMay 15, 2026
Steve Cohen
New
$134.9MMay 15, 2026
Stanley Druckenmiller
New
$16.1MMay 15, 2026
Ray Dalio
Increased
$89.8M(81.83%)May 15, 2026
Ken Griffin
Reduced
$857K(-5.05%)Feb 17, 2026
Stanley Druckenmiller
Sold
$0(-100.00%)Feb 17, 2026
Ray Dalio
New
$35.7KFeb 13, 2026
Ken Griffin
New
$1.2MNov 14, 2025
Stanley Druckenmiller
New
$23.8MNov 14, 2025

Frequently asked questions

How many institutional investors hold ARM?: 6 tracked institutional investors disclosed a position in ARM (ARM HOLDINGS PLC) in their most recent 13F filing.
Who is the largest institutional holder of ARM?: Ken Griffin, Citadel Advisors, holds the largest disclosed position in ARM, valued at $988M.
Did institutional ownership of ARM increase or decrease?: Across recent 13F filings, tracked investors recorded 9 new positions, 1 increased, 1 reduced, and 1 fully exited ARM.
Where does this ARM ownership data come from?: SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.