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COST logoHow to Buy Costco Wholesale Corp (COST) Stock

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

COST logoCOST
$922.76+$26.28 (+2.93%)
Day range
$883.91 – $924.81
52-week range
$844.06 – $1,096.50
Volume
4.08M
Market cap
$409.03B
Exchange
XNAS
Asset class
common
Optionable
Yes
24-hour trading
7 brokers — verify symbol
Fractional shares
10 brokers — verify symbol
Tokenized
Yes
Market cap tier
mega

Where to buy COST

13 brokers in our matrix offer COST. 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 COSTis 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

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

  • Hyperliquid (XYZ DEX)
    Symbol COST-USD · perp · non-US

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

About Costco Wholesale Corp

Founded in 1983, Costco Wholesale now operates a global chain of membership-based warehouse clubs, delivering high-quality goods and services at consistently low prices. As of its most recent fiscal year, Costco operated approximately 910 warehouses, serving more than 80 million members across its three geographic segments: Costco US (approximately 73% of total revenue), Costco Canada (13%), and Costco International (14%).Costco's core value proposition—quality products at unbeatable prices—has yielded consistently strong member renewal rates (93% in the US and Canada and nearly 90% internationally). About 55% of Costco's fiscal 2025 revenue came from its grocery offerings, and another 25% from general merchandise.
Sector
RETAIL-VARIETY STORES
Employees
341,000
Headquarters
ISSAQUAH, WA
Listed
1982-03-02
Market cap
$409.03B

Frequently asked

Where can I buy Costco Wholesale Corp (COST)?

COST 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 COST 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 COST is eligible with your broker. Overnight sessions route through ATSs with wider spreads and limit orders only.

Does Robinhood offer COST?

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

Does Fidelity offer COST?

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

Does Webull offer COST?

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

Is COST optionable?

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

Is there a tokenized version of COST?

Yes — COST has tokenized or synthetic equivalents on 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 COST?

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 COST qualifies.

Related reading

Background on the trading features that apply to COST.