What buying a stock actually means

When you buy a stock, you own a small piece of a company. If you buy one share of Apple, you own a fractional stake in Apple — not the building or the products, but a claim on the company's future earnings and assets. The price of that share moves up and down based on what other people think the company is worth right now.

You do not buy stock directly from the company in most cases. You buy it through a brokerage — a financial firm licensed to buy and sell stocks on your behalf. The brokerage holds your shares in an account, takes your order, executes the trade on an exchange (like the New York Stock Exchange), and charges you a fee or commission for doing so.

Stocks are not the same as bonds, mutual funds, or index funds, though you can hold all of them in the same brokerage account. A stock is a single company's share. A mutual fund or index fund is a basket of many stocks bundled together and managed by a fund company.

Key Takeaways

  • You need a brokerage account to buy stocks, and you open one by providing your name, address, Social Security number, and bank details — the same information you would give a bank.
  • Most brokerages charge no commission per trade anymore, but they make money through other means like lending your shares or offering premium accounts.
  • Stock prices move during market hours (9:30 a.m. to 4 p.m. Eastern time on weekdays), and you can place orders outside those hours that execute the next trading day.
  • You can lose money if the stock price falls below what you paid, and there is no government insurance on stock holdings the way there is on bank deposits.
  • Selling a stock triggers a tax event — you owe capital gains tax on the profit, and the rate depends on how long you held it.

Opening a brokerage account

You need a brokerage account before you can buy any stock. Common brokerages include Fidelity, Charles Schwab, E*TRADE, Interactive Brokers, and Robinhood. Each one has a website where you can open an account online in 10 to 20 minutes.

The account opening process asks for your legal name, date of birth, address, Social Security number, and employment information. You will also need to link a bank account so money can move in and out. The brokerage will verify your identity — usually by checking your Social Security number against public records — and then your account is active.

You do not need a minimum amount of money to open most accounts, though some brokerages require a deposit before you can start trading. Check the specific brokerage's website for current minimums. Once your account is open and funded, you can place your first order.

How to place a stock order

Log into your brokerage account and look for a "Trade" or "Buy" button. You will enter the stock's ticker symbol (a one- to four-letter code — AAPL for Apple, MSFT for Microsoft, TSLA for Tesla). The brokerage will show you the current price and let you choose how many shares you want to buy.

You will also choose an order type. A market order buys the stock at whatever price it is trading at right now — it executes immediately during market hours, but you do not know the exact price until the order is done. A limit order lets you set a maximum price you are willing to pay; it only executes if the stock falls to that price or lower, and it may never execute at all.

After you review the order, you submit it. During market hours (9:30 a.m. to 4 p.m. Eastern, Monday through Friday), a market order executes within seconds. If you place an order outside market hours, it sits in a queue and executes at the market open the next trading day, or not at all if the price moves past your limit.

Understanding stock prices and market hours

Stock prices are set by supply and demand — the price at which buyers and sellers agree to trade. During market hours, thousands of trades happen every second, and the price updates constantly. Outside market hours (before 9:30 a.m. or after 4 p.m. Eastern, or on weekends and holidays), the market is closed and prices do not move.

Some brokerages offer extended hours trading, which lets you place orders before 9:30 a.m. or after 4 p.m. These orders execute in a thinner market — fewer buyers and sellers — so prices can be more volatile and spreads (the gap between the buy and sell price) can be wider. Extended hours trading is riskier and not recommended for beginners.

The stock market is closed on weekends, federal holidays, and a few other days (like the day after Thanksgiving). On those days, you can place orders in your account, but they will not execute until the market opens again.

What happens after you buy

Once your order executes, the shares appear in your account. You own them immediately, even though the settlement process (the behind-the-scenes transfer of money and shares) takes two business days. You can sell those shares anytime the market is open, and you can hold them for decades if you choose.

Your brokerage sends you a statement showing what you own, how much you paid for it, and what it is worth today. If the stock price rises, your account value rises. If it falls, your account value falls. You do not owe taxes on this gain or loss until you sell.

Some stocks pay dividends — small cash payments the company sends to shareholders, usually quarterly. Your brokerage deposits dividends directly into your account. Dividends are taxable income in the year you receive them, even if you do not sell the stock.

How to sell a stock

Selling works the same way as buying. Log into your account, find the stock you want to sell, enter how many shares, choose market or limit order, and submit. The order executes during market hours, and the cash appears in your account after settlement (two business days).

When you sell, you trigger a tax event. If you sold the stock for more than you paid, you owe capital gains tax on the profit. If you held the stock for more than one year, it is taxed as a long-term capital gain, which has lower tax rates than short-term gains (stocks held one year or less). If you sold for less than you paid, you have a capital loss, which you can use to offset other gains.

You do not pay the tax immediately — you report it on your tax return the following April. Your brokerage sends you a form (1099-B) listing all your sales and the gains or losses, which you use to fill out your return or give to a tax preparer.

Risks and what you should know before you start

Stock prices can fall sharply and quickly. If you buy a stock at $100 and it falls to $50, you have lost half your money on paper. If you sell at $50, that loss is real. There is no government insurance on stock holdings — the FDIC insurance that protects bank deposits does not cover stocks.

Beginners often lose money because they buy based on hype, sell in a panic when prices fall, or trade too frequently and pay more in fees and taxes than they gain in returns. Starting with a small amount you can afford to lose, holding for the long term, and avoiding frequent trading are strategies many investors use to reduce these risks.

If you borrow money to buy stocks (called margin), you can amplify both gains and losses. If the stock falls far enough, your brokerage can force you to sell to cover the loan. Margin is a tool for experienced investors and is not recommended for beginners.

Frequently Asked Questions

Do I need a lot of money to start buying stocks?

No. Most brokerages have no account minimum and no commission per trade. You can start with $100 or $1,000. Some brokerages also offer fractional shares, meaning you can buy a portion of an expensive stock (like one-tenth of a share of a $1,000 stock) instead of having to buy a whole share.

What is the difference between a stock and a mutual fund?

A stock is one company's share. A mutual fund is a basket of many stocks (or bonds, or both) managed by a fund company. Mutual funds spread your risk across many companies, but they charge a management fee. Index funds are a type of mutual fund that tracks a market index like the S&P 500 and usually charge lower fees than actively managed funds.

Can I lose more money than I invested?

If you buy stocks with cash (not on margin), the most you can lose is what you invested. If a stock goes to zero, you lose 100 percent of that money, but you do not owe anything more. If you borrow money to buy stocks (margin), you can lose more than your initial investment.

When do I owe taxes on stocks?

You owe capital gains tax when you sell a stock for a profit. You do not owe tax on gains while you hold the stock. You also owe tax on dividends in the year you receive them. Long-term capital gains (stocks held over one year) are taxed at lower rates than short-term gains.

What if I want to sell but the market is closed?

You can place a sell order anytime, but it will not execute until the market opens. If you place a market order after hours, it will execute at the market open the next trading day at whatever price the stock is trading at then. If you place a limit order, it will only execute if the price reaches your limit.