What Is a Stock
The plain answer
Section titled “The plain answer”A stock is a unit of ownership in a company. You do not own the factory floor. You own a claim on the business that can rise or fall as other investors change what they will pay for that claim.
Stocks can grow over long periods. They can also drop a lot, and a single company can fail.
How it actually works
Section titled “How it actually works”Companies issue shares to raise money. After that, most trading is between investors. The trade sets a market price.
Depending on the share class, you may get a vote and you may receive a dividend, which is a cash payout from profits. Dividends are not guaranteed.
Your return comes from price changes plus any dividends. A good year for the business does not always raise the price if investors already expected it.
If the company fails, stockholders usually stand behind lenders when remaining assets are divided.
What this means for you
Section titled “What this means for you”Owning one company concentrates risk. Competition, a bad product, or a lawsuit can hit that holding even when the rest of the market is fine. Broad funds spread that risk across many companies.
Use stocks for money you can leave invested through declines. Follow the order of operations before you put near-term cash into individual shares.
Common mistakes
Section titled “Common mistakes”Treating a familiar brand as a safe stock.
Expecting dividends to continue because they were paid last year.
Confusing a rising price with proof that you understood the business.
Related pages
Section titled “Related pages”Educational content, not personalized financial, tax, or legal advice. No affiliate relationships. Figures are for tax year 2026 and change annually.Read the full disclaimer.