Arm Holdings Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of O9T?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	89,000	0.0084%
Individual Insiders	420,543	0.0397%
General Public	51,787,035	4.89%
Institutions	82,008,639	7.74%
Public Companies	924,694,783	87.3%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 91.94% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
87.1%	SoftBank Group Corp.	922,733,999	€120.1b	0%	no data
0.48%	Capital Research and Management Company	5,036,994	€655.6m	0.39%	0.03%
0.44%	Coatue Management, L.L.C.	4,633,454	€603.0m	0%	1.81%
0.39%	Union Asset Management Holding AG	4,101,869	€533.9m	-19.9%	0.41%
0.34%	Goldman Sachs Group, Investment Banking and Securities Investments	3,650,495	€475.1m	-0.7%	0.2%
0.34%	Morgan Stanley, Investment Banking and Brokerage Investments	3,620,178	€471.2m	19.8%	0.05%
0.33%	Sustainable Growth Advisers, LP	3,457,220	€450.0m	117%	2.58%
0.31%	UBS Asset Management AG	3,297,224	€429.1m	15.3%	0.04%
0.28%	Schroder Investment Management Limited	2,921,340	€380.2m	68.7%	0.22%
0.19%	Artisan Partners Limited Partnership	2,034,535	€264.8m	-39.1%	0.22%
0.19%	Alphabet Inc.	1,960,784	€255.2m	0%	no data
0.17%	Schroder Investment Management North America Inc.	1,810,128	€235.6m	12%	0.8%
0.14%	Mubadala Investment Company PJSC	1,501,960	€195.5m	0%	0.37%
0.13%	Franklin Resources, Inc.	1,411,210	€183.7m	28%	0.07%
0.13%	FMR LLC	1,408,986	€183.4m	-23.3%	0.01%
0.12%	Jericho Capital Asset Management L.P.	1,306,115	€170.0m	0%	2.38%
0.11%	BlackRock, Inc.	1,133,917	€147.6m	-67.2%	no data
0.1%	GPU Ventures	1,101,249	€143.3m	0%	4.97%
0.1%	BNP Paribas Arbitrage Sa, Asset Management Arm	1,094,865	€142.5m	-49.9%	0.12%
0.1%	Wellington Management Group LLP	1,059,671	€137.9m	1.06%	0.02%
0.088%	Altimeter Capital Management, LP	933,208	€121.5m	431%	1.99%
0.084%	Bank of America Corporation, Asset Management Arm	885,122	€115.2m	30%	0.03%
0.082%	Bank Julius Bär & Co. AG, Asset Management Arm	864,660	€112.5m	9.42%	0.32%
0.079%	Baillie Gifford & Co.	837,008	€108.9m	17.1%	0.05%
0.078%	Loomis Sayles & Company, L.P.	828,140	€107.8m	-1.97%	0.15%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2025/09/18 23:01
End of Day Share Price	2025/09/18 00:00
Earnings	2025/06/30
Annual Earnings	2025/03/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Arm Holdings plc is covered by 60 analysts. 37 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
Janco Venter	Arete Research Services LLP
Alex Pound	Arete Research Services LLP
Brett Simpson	Arete Research Services LLP