How to Buy Arm Holdings plc American Depositary Shares (ARM) Stock

Where to buy ARM

13 brokers in our matrix offer ARM. Verify availability and current fees with each broker before trading.

Broker	Commission	Fractional	Extended	Overnight	Options	OTC access
Charles Schwab (thinkorswim)	$0	Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once		~1,130	$0.65	Most (3/5)
E*TRADE (Morgan Stanley)	$0 listed			~20	$0.65	Most (4/5)
Fidelity	$0	Stocks by the Slice, 7,000+ stocks/ETFs, from $1			$0.65	Partial (2+0)
Firstrade	$0	~4,000+ tickers, ≥ $5		~1,200	$0	Most (4/5)
Interactive Brokers	$0 (Lite) / per-share (Pro)			~10,000	per-contract pricing	Full
Merrill Edge	$0				$0.65	Most (3/5)
Moomoo	$0				$0	Limited only
Public.com	$0				rebate model	Limited only
Robinhood	$0	≥ $1 stocks, market cap ≥ $25M		~1,134	$0	None
SoFi Active Investing	$0				$0	Partial (1+2)
tastytrade	$0 stocks				$1.00 open, $0 close (capped at $10 per leg)	Limited only
TradeStation	$0 listed				$0.50 / $0.60	Most (4/5)
Webull	$0				$0	Limited only

24-Hour / Overnight trading

ARM may be eligible for overnight trading via Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), Webull, Moomoo, Firstrade. Each broker maintains its own eligibility list — confirm before placing an order.

About Arm Holdings plc American Depositary Shares

Arm Holdings is the IP owner and developer of the Arm architecture, which is used in 99% of the world's smartphone CPU cores. It also has high market share in other battery-powered devices like wearables, tablets, and sensors. Arm licenses its architecture for a fee, offering different types of licenses depending on the flexibility the customer needs. Customers like Apple or Qualcomm buy architectural licenses, which allow them to modify the architecture and add or delete instructions to tailor the chips to their specific needs. Other clients directly buy off-the-shelf designs from Arm. Both off-the-shelf and architectural customers pay a royalty fee per chip shipped. In 2026, Arm announced the launch of its own CPU products on top of its existing royalty business.

Employees

8,330

Listed

2023-09-14

Market cap

$221.23B

Frequently asked

Where can I buy Arm Holdings plc American Depositary Shares (ARM)?

ARM is offered by 13 brokers in our matrix, including Charles Schwab (thinkorswim), E*TRADE (Morgan Stanley), Fidelity, Firstrade, Interactive Brokers. Compare commissions, fractional eligibility, and overnight availability in the broker matrix above.

Can I buy ARM after hours or overnight?

Yes. ARM is on the 24-hour eligibility list for Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), and others. Overnight sessions route through ATSs with wider spreads and limit-orders only.

Does Robinhood offer ARM?

Yes. Robinhood offers ARM as a regular exchange-listed security.

Does Fidelity offer ARM?

Yes. Fidelity offers ARM as a regular exchange-listed security.

Does Webull offer ARM?

Yes. Webull offers ARM as a regular exchange-listed security.

Is ARM optionable?

Yes. ARM has listed options contracts. Per-contract pricing varies by broker — see the Options column in the matrix.

Is there a tokenized version of ARM?

Not in our current dataset. The tokenized stock universe (Kraken xStocks, Binance Alpha/Ondo, Robinhood EU, Hyperliquid HIP-3) is expanding quickly — we refresh quarterly.

Can I buy a fractional share of ARM?

Yes. Multiple brokers in the matrix support fractional shares for ARM — see the Fractional column above for per-broker eligibility and minimums.