You need a brokerage account, money to invest, and a way to pick which stocks to buy

Investing in stocks means buying shares of ownership in companies. To do this, you open an account with a brokerage — a company that buys and sells stocks on your behalf. You deposit money into that account, then use it to purchase shares. The brokerage charges you a fee (sometimes per trade, sometimes a flat monthly amount, sometimes nothing) and holds your shares until you sell them.

The actual mechanics are straightforward: you log into your brokerage account, search for a stock by its ticker symbol (like AAPL for Apple), enter how many shares you want, and confirm the purchase. The money leaves your account and the shares appear in your portfolio. You can sell the same way whenever you choose.

The harder part is deciding which stocks to buy and when to sell them. That decision depends on your goals, how much money you can afford to lose, and how much time you want to spend researching companies.

Key Takeaways

  • You must open a brokerage account with a company like Fidelity, Charles Schwab, E*TRADE, or Robinhood before you can buy any stocks.
  • Most brokerages now charge zero commission per trade, but they make money through other fees or by lending out your shares.
  • You need enough money to buy at least one share; share prices range from under $1 to over $1,000 depending on the company.
  • Picking individual stocks requires research into the company's finances, competition, and industry — or you can buy index funds that hold many stocks at once.
  • The money you invest can go down as well as up, and you should only invest money you can afford to lose over at least a few years.

Opening a brokerage account and funding it

A brokerage account is a bank-like account where your cash and stocks live. You choose a brokerage, provide your name, address, Social Security number, and employment information, then link a bank account so you can transfer money in. Most brokerages complete this process online in 10 to 15 minutes. You will receive a confirmation email and can start trading the same day or within 24 hours.

Common brokerages include Fidelity, Charles Schwab, E*TRADE, TD Ameritrade, Robinhood, Webull, and Interactive Brokers. Each charges different fees and offers different research tools. Some are better for beginners (Fidelity and Schwab have extensive educational resources), while others target active traders. Compare their fee structures before you choose — some charge per trade, some charge monthly, and some charge nothing but make money other ways.

Once your account is open, transfer money from your bank. Most brokerages allow transfers of $1 to $100,000 or more. The money usually arrives within one to three business days. You can then use it to buy stocks immediately.

Understanding share prices and how much money you need

A share is one unit of ownership in a company. If a company has 1 million shares outstanding and you own 100 of them, you own 0.01% of the company. The price of one share varies wildly: some companies' shares cost $5, others cost $500, and a few cost over $1,000. The price changes every trading day based on what buyers and sellers agree the share is worth.

You do not have to buy a whole number of shares. Most brokerages now allow you to buy fractional shares — meaning you can invest $100 and own 0.5 shares of a $200 stock, or 2.3 shares of a $43 stock. This makes it possible to start investing with as little as $1 to $100, depending on the brokerage.

Your total investment is the share price multiplied by the number of shares you buy. If you buy 10 shares at $50 each, you spend $500. If the price rises to $60, your 10 shares are now worth $600 — you have made $100. If the price falls to $40, your shares are worth $400 — you have lost $100. You only lock in that gain or loss when you sell.

Researching stocks and deciding what to buy

Before you buy a stock, you should understand what the company does, how it makes money, and whether it is likely to grow or shrink. This requires reading the company's financial statements (which are public and free on the SEC website or the company's investor relations page), understanding its competitors, and forming a view on its future.

For beginners, this research is time-consuming and error-prone. A simpler approach is to buy an index fund — a fund that holds hundreds or thousands of stocks at once, tracking a market index like the S&P 500 (the 500 largest U.S. companies) or the total U.S. stock market. An index fund spreads your risk across many companies, so one bad stock does not sink your investment. Index funds charge a small annual fee (often 0.03% to 0.20% of your money per year) and require almost no research.

If you want to pick individual stocks, start by reading the company's annual report (the 10-K filing), its quarterly earnings reports, and analyst coverage. Look at the company's profit, debt, cash flow, and growth rate. Compare these numbers to competitors. Then decide whether the current stock price reflects what you think the company is worth. This process takes hours per stock and still involves guessing.

Placing your first trade

Once you have chosen a stock or fund, log into your brokerage account and search for it by name or ticker symbol. The ticker is a short code: AAPL for Apple, MSFT for Microsoft, VOO for the Vanguard S&P 500 Index Fund. The brokerage will show you the current price and a chart of recent price history.

Enter the number of shares (or the dollar amount if you are buying fractional shares) and choose the type of order. A market order buys immediately at whatever the current price is — useful if you do not care about getting the exact price. A limit order buys only if the price drops to a level you set — useful if you want to wait for a better price but risk never getting filled if the price never reaches your limit.

Review the order summary, which shows the total cost including any fees, then confirm. The trade executes within seconds to minutes during market hours (9:30 a.m. to 4 p.m. Eastern time on weekdays). The shares appear in your account, and the cash is deducted. You now own part of that company.

What happens after you buy: holding, selling, and taxes

After you buy a stock, you own it until you sell it. You can hold it for days, months, or decades. While you own it, you may receive dividends — small cash payments that some companies pay to shareholders quarterly or annually. Dividends are optional; not all stocks pay them. You can reinvest dividends automatically by buying more shares, or take them as cash.

When you sell, you owe taxes on any profit. If you held the stock for more than one year, the profit is taxed as a long-term capital gain, which is usually taxed at a lower rate (0%, 15%, or 20% depending on your income) than ordinary income. If you held it for one year or less, the profit is taxed as a short-term capital gain, which is taxed at your regular income tax rate. Losses can offset gains, reducing your tax bill.

Your brokerage will send you a tax form (1099-B) at the end of the year listing all your sales and gains or losses. You report this on your tax return. Many people use tax software like TurboTax or TaxAct, or hire an accountant, to handle this.

Risk, time horizon, and how much to invest

Stock prices fluctuate daily. A stock you buy today might be worth 20% more tomorrow or 20% less. Over long periods (10+ years), stocks have historically gone up on average, but there is no may provide. You could lose money, especially if you need the cash in the next few years and the market is down when you sell.

Only invest money you can afford to lose and do not need for at least three to five years. If you are saving for a house down payment in two years, stocks are too risky — keep that money in a savings account. If you are saving for retirement 30 years away, stocks are appropriate because you have time to ride out downturns.

Many financial advisors suggest a diversified portfolio — a mix of stocks, bonds, and cash tailored to your age and goals. A common rule of thumb is to subtract your age from 110 and invest that percentage in stocks; the rest goes in bonds and cash. So a 30-year-old might invest 80% in stocks and 20% in bonds. This is not a rule, just a starting point for thinking about your risk tolerance.

Frequently Asked Questions

Do I need a lot of money to start investing in stocks?

No. Most brokerages allow you to start with $1 to $100 because they offer fractional shares. You can buy a piece of an expensive stock without buying a whole share. However, if you are paying per-trade fees, those fees eat into small investments, so check your brokerage's fee structure first.

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

A stock is a single company. A mutual fund or index fund is a collection of many stocks (or bonds, or both) bundled together. When you buy a fund, you own a tiny piece of every holding in it. Funds reduce risk because one bad company does not hurt you much, but they also charge annual fees.

Can I lose more money than I invested?

If you buy stocks outright with cash, no — the worst that can happen is the stock goes to zero and you lose your entire investment. If you borrow money to buy stocks (called margin), yes, you can lose more than you invested. Beginners should avoid margin until they understand it fully.

When should I sell a stock I own?

That depends on your goal. If you bought it for long-term growth, hold it through ups and downs. If the company's fundamentals deteriorate or you need the cash, sell. Avoid selling just because the price dropped — that locks in a loss. Many investors sell when emotions run high and regret it later.

How do I know if a stock is a good deal at its current price?

Compare the stock price to the company's earnings, revenue, and growth rate. Tools like Yahoo Finance and Seeking Alpha show these metrics and compare them to competitors. A stock trading at a low price-to-earnings ratio might be cheap, or it might be cheap because the company is in trouble. Research is required.