What Is a Stock? (In Simple Terms)

What Does Owning a Stock Mean?

Ownership comes with three features, each tied to the shares you hold:

• A residual claim on assets. Creditors are paid before shareholders. If a company were wound up, lenders and other creditors would be paid first, and shareholders would share whatever remained in proportion to their shares.
• An economic interest in profits. Shareholders benefit from a company’s profits, but those profits are not automatically paid to them. A company can reinvest its earnings, pay dividends, reduce debt, or repurchase shares, and each choice can affect the value of the shareholders’ investment.
• Voting rights. Most common shares carry one vote per share on matters such as electing the board of directors. Some companies issue multiple classes of shares with different voting rights.

This article describes common shares. Preferred shares can differ in their priority in a liquidation and in their voting rights.

With 0.01% of the company, your claim and your vote are both small, but both are real and proportional to your shares.

Stocks versus bonds. When you buy a stock, you purchase an ownership interest in a business. When you buy a corporate bond, you lend money to the business.

What Is a Share of Stock?

A share is one unit of ownership in a company. Companies divide ownership into shares to raise capital, to transfer ownership efficiently, and to create liquidity through public markets.

Stock versus share. In everyday use the two words describe nearly the same thing. “Stock” refers to ownership in a company in general, and a “share” is one unit of that ownership. “I own 100 shares of the company” and “I own stock in the company” describe the same position.

Price and market capitalization. A stock’s price is set by trades between buyers and sellers. Multiplying that price by the number of shares outstanding gives the company’s market capitalization, the total market value of its outstanding shares:

$100 × 1,000,000 shares = $100,000,000

Your 100 shares are worth 100 × $100 = $10,000, which is 0.01% of $100,000,000.

Where your money goes. When you buy shares on an exchange, your payment goes to the seller. The company receives money only when it issues new shares, for example in an initial public offering (IPO).

How Do Stocks Make Money?

Stocks generate returns in two ways: price appreciation and dividends. Total return is the sum of the two.

1. Price Appreciation

Suppose you buy 100 shares at $100 and later sell them at $110:

$110 − $100 = $10 per share

$10 × 100 = $1,000

That $1,000 is a capital gain. The gain is realized only when you sell. Until then it is an unrealized gain, a change in the value of what you hold.

2. Dividends

Some companies pay a portion of their profits to shareholders as dividends. If a company pays $2 per share annually and you own 100 shares:

100 × $2 = $200

You receive $200 in cash and still own the shares. Many companies pay no dividend and instead reinvest their profits in the business.

Total return. Suppose your $100 share rises to $110 and pays a $2 dividend during the year:

($110 − $100 + $2) / $100 = 12%

Your total return is $12 per share, or 12%, before taxes and fees. For your 100 shares, that is $1,000 in price gain plus $200 in dividends, or $1,200 on $10,000.

How Dividends Affect Stock Price

Dividends do not create new value. They redistribute existing value.

Returning to the original $100 share price, consider the dividend in isolation. To isolate the effect of the dividend, assume the share price would otherwise stay the same, and ignore taxes and transaction costs. Using the running example, before the dividend:

• Market capitalization: $100,000,000
• Shares outstanding: 1,000,000
• Share price: $100

The company declares a $2-per-share dividend:

$2 × 1,000,000 = $2,000,000

Theoretical market capitalization once the shares trade ex-dividend:

$100,000,000 − $2,000,000 = $98,000,000

Theoretical share price once the shares trade ex-dividend:

$98,000,000 / 1,000,000 = $98

Your position after the dividend:

• Shares: 100 × $98 = $9,800
• Cash received: 100 × $2 = $200
• Total: $9,800 + $200 = $10,000

Under these assumptions your total is the same as before. A dividend is part of your ownership value returned to you in cash, which is why it shows up as a $2 drop in the share price.

This is the theoretical adjustment, not a promise about real prices. The price adjusts on the ex-dividend date, the first day the shares trade without the right to the upcoming dividend, and other news moves the price at the same time, so a real stock rarely falls by exactly the dividend. Taxes also matter, because how a dividend is taxed depends on the type of account holding the shares.

Why Do Stock Prices Go Up and Down?

A stock’s price reflects what investors are willing to pay for a company’s expected future financial performance, informed by what is known about the business today. Expectations about profits, growth, risk, and interest rates all influence it.

Interest rates matter because future profits are worth less in today’s dollars when rates are higher and more when rates are lower. Converting future money into today’s dollars is called discounting.

As new information arrives, investors update their expectations and the price moves. Common drivers include:

• Earnings reports
• Interest rate changes
• Economic conditions
• Industry developments
• Investor sentiment

Prices respond to changes in expectations. A company can report lower profits and see its price rise if the results beat what investors feared, or report strong profits and see its price fall if investors expected more. A good business is not automatically a good investment at every price.

Are Stocks Risky?

Yes. Stock returns are not guaranteed, and prices fluctuate daily. A stock can fall 30% to 50% in a single year while the company remains a viable business.

An individual company’s stock can lose most or all of its value, including when the business fails. Investors can reduce company-specific risk by spreading their money across many businesses. Broadly diversified exchange-traded funds (ETFs) are one way to do this, although they still rise and fall with the overall stock market.

Losses and recoveries are not symmetrical. A fall from $100 to $50 is a 50% loss, and recovering requires a 100% gain:

$50 × 2 = $100

Stocks as an Asset Class

Stocks are one of several major asset classes, alongside bonds, real estate, cash, and commodities. Each behaves differently in terms of risk and return.

Historically, broad stock markets have generally rewarded long-term investors. The UBS Global Investment Returns Yearbook 2026 found that equities outperformed bonds and bills in every country with a continuous record back to 1900. That evidence concerns broad equity markets rather than individual stocks, and even long holding periods do not guarantee positive returns. Investors generally require a higher expected return as compensation for bearing more risk, a relationship known as the risk premium, although realized returns in any given period can differ from expectations.

What Is the Stock Market?

Stocks are bought and sold on exchanges, and together these exchanges form the stock market. It is the marketplace where buyers and sellers transfer ownership at agreed prices. The company creates value, and the market assigns a price.

In Canada, many large companies trade on the Toronto Stock Exchange (TSX), with prices quoted in Canadian dollars. Shares of U.S. companies trade on U.S. exchanges such as the NYSE and Nasdaq, with prices quoted in U.S. dollars. You can hold stocks in a TFSA, an RRSP, an FHSA, or a non-registered account. The account type affects how gains and dividends are taxed, and foreign investments may also be subject to withholding taxes.

Summary: What Is a Stock?

A stock is partial ownership in a company. It gives you a residual claim on assets, an economic interest in profits, and in most cases a vote on certain company decisions. Returns come from price appreciation and dividends, and prices move with expectations about the future. Individual stocks can lose most or all of their value, so spreading investments across many businesses reduces company-specific risk.

Frequently Asked Questions