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

Compare 13 brokers offering ARM, check which offer overnight sessions, see options pricing, and compare fractional-share terms.

ARM
$310.38+$4.04 (+1.32%)
Day range
$308.95 – $325.24
52-week range
$100.02 – $452.70
Volume
6.59M
Market cap
$331.42B
Exchange
XNAS
Asset class
adr
Optionable
Yes
24-hour trading
7 brokers — verify symbol
Fractional shares
10 brokers — verify symbol
Tokenized
Yes
Market cap tier
mega

Where to buy ARM

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

BrokerCommissionFractionalExtendedOvernightOptionsOTC access
Charles Schwab (thinkorswim) logoCharles Schwab (thinkorswim)Review$0
Schwab Stock Slices, S&P 500 only, ≥ $5/slice, up to 30 at once
~1,130
$0.65Most (3/5)
E*TRADE (Morgan Stanley) logoE*TRADE (Morgan Stanley)Review$0 listed
~20
$0.65Most (4/5)
Fidelity logoFidelityReview$0
Stocks by the Slice, 7,000+ stocks/ETFs, from $1
$0.65Partial (2+0)
Firstrade logoFirstradeReview$0
~4,000+ tickers, ≥ $5
~1,200
$0Most (4/5)
Interactive Brokers logoInteractive BrokersReview$0 (Lite) / per-share (Pro)
~10,000
per-contract pricingFull
Merrill Edge logoMerrill EdgeReview$0
$0.65Most (3/5)
Moomoo logoMoomooReview$0
$0Limited only
Public.com logoPublic.comReview$0
rebate modelLimited only
Robinhood logoRobinhoodReview$0
≥ $1 stocks, market cap ≥ $25M
~1,134
$0None
SoFi Active Investing logoSoFi Active InvestingReview$0
$0Partial (1+2)
tastytrade logotastytradeReview$0 stocks
$1.00 open, $0 close (capped at $10 per leg)Limited only
TradeStation logoTradeStationReview$0 listed
$0.50 / $0.60Most (4/5)
Webull logoWebullReview$0
$0Limited only

24-Hour / Overnight trading

These brokers run an overnight session: Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), Webull, Moomoo, Firstrade. Each publishes its own list of symbols admitted to that session, and those lists are typically limited to large-cap index members. We do not track them per symbol, so check whether ARMis on your broker’s list before planning an overnight order.

Overnight sessions route through ATSs, typically have wider spreads, accept limit orders only, and offer no guaranteed fills.

Tokenized & CFD/Perp equivalents

ARM has on-chain equivalents traded 24/7 internationally. Not available to US residents. Full breakdown of what you actually own →

  • Kraken xStocks
    Symbol ARMx · tokenized-1to1 · non-US / non-EEA
  • Hyperliquid (XYZ DEX)
    Symbol ARM-USD · perp · non-US

Synthetic exposure carries no shareholder rights, may be subject to leverage, and is geo-restricted. See full disclaimer.

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
9,584
Listed
2023-09-14
Market cap
$331.42B

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?

Most brokers in the matrix support pre-market (4 AM–9:30 AM ET) and after-hours (4–8 PM ET) sessions. A true overnight session is offered by Charles Schwab (thinkorswim), Interactive Brokers, Robinhood, E*TRADE (Morgan Stanley), and others, but each admits only its own list of symbols — usually large-cap index members — so confirm ARM is eligible with your broker. 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?

Yes — ARM has tokenized or synthetic equivalents on Kraken xStocks, Hyperliquid (XYZ DEX). These are not available to US residents and carry their own risk profile, including leverage and no shareholder rights.

Can I buy a fractional share of ARM?

10 brokers in the matrix offer fractional shares, but each restricts the feature to its own symbol universe — Schwab to the S&P 500, Robinhood to stocks above a market-cap floor, Fidelity to a 7,000-name list. Check the Fractional column above for each broker's scope and minimum, then confirm ARM qualifies.

Related reading

Background on the trading features that apply to ARM.