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A stock (also called a share or equity) represents a small unit of ownership in a company. If a company has issued 1,000,000 shares and you own 1,000 of them, you own 0.1% of that company — entitled to a proportional slice of its profits and, in most cases, a vote on major company decisions at shareholder meetings.
Companies issue stock mainly to raise money without taking on debt. Instead of borrowing from a bank and having to pay it back with interest, a company can sell ownership stakes to investors through an Initial Public Offering (IPO) and use that cash to grow — building factories, hiring staff, or funding research — without a fixed repayment schedule.
Once shares are issued, most of the buying and selling that happens afterward is between investors on a stock exchange, not with the company itself. The company only receives money at the IPO (or in a later share offering); day-to-day price moves reflect what investors are willing to pay each other for the shares, based on how they expect the company to perform.
Owning stock comes with two potential ways to make money: price appreciation, if the share price rises above what you paid, and dividends, which are periodic cash payments some companies make to shareholders out of profits. Not all companies pay dividends — many growth-focused companies reinvest all their profits back into the business instead.
Real-World Example
When a private company holding an IPO sells 10% of itself to public investors for a large sum, it instantly raises that capital to fund expansion, without owing a cent back on a fixed schedule the way a bank loan would require. An investor buying a tiny slice of that company through the IPO now owns a proportional share of its future profits and voting rights, and from that point on, virtually all subsequent buying and selling of those shares happens between investors on the exchange, with the company itself no longer receiving any of that trading activity's proceeds.
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