If your brokerage account is already open and funded, buying a stock during market hours takes seconds to execute and one business day to fully settle. Starting from nothing, how long it takes to buy a stock stretches to roughly a week: a few minutes to a few days for account approval, one to five business days to move money in, a near-instant trade, and one more business day for settlement to make your ownership official.
Opening the Account: Minutes to a Week
Federal law requires every brokerage to run a Customer Identification Program when you open an account, verifying your name, date of birth, address, and identification number against government records.1Financial Crimes Enforcement Network. Interagency Interpretive Guidance on Customer Identification Program Requirements Under Section 326 of the USA PATRIOT Act FINRA adds its own know-your-customer duty, requiring firms to learn and retain the essential facts about every account.2FINRA. FINRA Rules 2090 – Know Your Customer
In practice, you fill out an online application with your Social Security number, address, and employment details. Automated verification approves straightforward applications in under ten minutes at most major brokerages. Anything flagged for manual review can wait up to five business days while compliance staff take a closer look.
Non-U.S. citizens face extra steps. Instead of a Social Security number, you typically need an Individual Taxpayer Identification Number or a foreign tax ID, plus a W-8BEN form establishing your foreign status for tax purposes.3Internal Revenue Service. Instructions for Form W-8BEN Business entities file the W-8BEN-E instead. These international workflows can add days or weeks depending on the firm.
Funding the Account: One to Five Business Days
Approval alone doesn’t let you buy anything. You need money in the account, and how you move it in determines how quickly you can trade.
ACH transfer from your bank is the most common method. Most ACH payments settle in one to two business days at the network level, but brokerages commonly hold the funds for three to five business days before making them fully available for trading.4Nacha. Same Day ACH – Moving Payments Faster Phase 1 That hold is the brokerage protecting itself against returned transfers, not a limit of the ACH system.
A domestic wire transfer is faster. Fedwire processes payments in real time, and once processed a wire is considered immediate, final, and irrevocable.5Federal Reserve. Expansion of Fedwire Funds Service and National Settlement Brokerages typically credit wired funds the same day. The tradeoff is a per-wire fee, often $25 to $50 depending on the bank.
Some brokerages split the difference by extending provisional buying power while your ACH deposit clears, essentially fronting a temporary credit so you can trade right away. The amount varies by firm and account history. Mobile check deposits are another option, though funds deposited by check may be held for up to seven days before they can be used to trade.
Placing the Order: Seconds, if the Market Is Open
Once you have buying power, the trade itself happens almost instantly. A market order goes from your screen to an exchange or market maker through the brokerage’s routing software and typically executes in milliseconds. Your confirmation appears the moment the transaction matches.
Regulations require brokerages to seek the most favorable terms reasonably available when routing your order, so the software compares prices across multiple venues before sending it.6Federal Register. Regulation Best Execution All of that happens in fractions of a second.
Limit orders are the exception. You set a target price, and the order fills only if the stock reaches it. That might take seconds, or it might never happen if the price moves the other way before the order expires.
When the Market Is Actually Open
The New York Stock Exchange and Nasdaq run core trading Monday through Friday, 9:30 a.m. to 4:00 p.m. Eastern Time, and close entirely on federal holidays.7NYSE. Holidays and Trading Hours8Nasdaq. Stock Market Holidays and Trading Hours Submit a buy order at midnight on Saturday and it sits in a queue until Monday’s opening bell.
Extended-hours sessions offer some flexibility. Pre-market trading begins as early as 4:00 a.m. Eastern, and after-hours trading runs until 8:00 p.m. Eastern.7NYSE. Holidays and Trading Hours Far fewer participants trade in these windows, which means wider bid-ask spreads and more volatile prices. A stock that’s easy to buy at a fair price at 10:00 a.m. might cost noticeably more at 7:30 p.m.
Some holidays bring early closings. In 2026, the day after Thanksgiving (November 27) and Christmas Eve (December 24) both close at 1:00 p.m. Eastern.8Nasdaq. Stock Market Holidays and Trading Hours Orders placed after the cutoff queue until the next regular session.
Settlement: One Business Day After the Trade
Your confirmation appears instantly, but you don’t officially own the shares until settlement. Under SEC Rule 15c6-1, the standard settlement cycle is T+1, meaning the transaction must complete one business day after the trade date.9eCFR. 17 CFR 240.15c6-1 – Settlement Cycle This replaced the old T+2 cycle, with brokerages required to comply starting in May 2024.10Securities and Exchange Commission. Shortening the Securities Transaction Settlement Cycle
During that window, the Depository Trust Company coordinates the actual exchange. Your brokerage delivers cash, the seller’s brokerage delivers shares, and the clearinghouse reconciles both sides. Once settlement completes, you are the legal owner on the corporate books.
For most buy-and-hold investors the T+1 delay is invisible. It only matters if you plan to sell those shares quickly, or if you’re trying to qualify for an upcoming dividend.
When Settlement Timing Actually Matters
Dividend Eligibility
Under T+1, the ex-dividend date and the record date fall on the same day.11DTCC. T+1 Dividend Processing FAQ To qualify for a dividend, you must buy at least one business day before the ex-date so that settlement lands your name on the shareholder register in time. Buy on the ex-date itself and your trade settles the next business day, after the record date. You’ll own the stock, but you’ll miss that dividend.
Freeriding and Good Faith Violations
The gap between execution and settlement creates traps in cash accounts. Freeriding means buying a stock with unsettled funds and then selling it before those funds clear. Federal Reserve Regulation T prohibits this, and the consequence is a 90-day account freeze during which you can still buy but must pay in full with settled cash on the trade date.12Investor.gov. Freeriding13eCFR. 12 CFR Part 220 – Credit by Brokers and Dealers, Regulation T
A related problem is the good faith violation: selling a security bought with funds that hadn’t yet settled at the time of purchase. One or two typically don’t trigger penalties, but three within a 12-month period can produce a similar 90-day restriction requiring fully settled cash upfront for every purchase.
Pattern Day Trader Rules
These restrictions apply differently to margin accounts, which have their own speed bump. FINRA defines a pattern day trader as anyone who executes four or more day trades in five business days in a margin account.14FINRA. Regulatory Notice 21-13 Once flagged, you must maintain at least $25,000 in equity in that account at all times. Drop below that and day trading gets suspended until the balance is restored.15FINRA. Day Trading Many firms set their own minimums higher.