What is Stock?

A stock, also referred to as equity, is a financial security that represents fractional ownership in a corporation, conveying a proportional claim on the company's assets and earnings. When a public or private company requires capital to fund expansion, operations, or research, it issues shares of stock to investors in the secondary market or through an Initial Public Offering (IPO). Holding shares of a company makes the investor a shareholder, granting them a stake in the business's financial success through capital appreciation (rising share prices) or periodic cash disbursements. Stocks are traded on regulated public exchanges, such as the New York Stock Exchange (NYSE) or Nasdaq, under the regulatory oversight of the Securities and Exchange Commission (SEC).

Equity securities are primarily classified into common stock and preferred stock. Common stock represents the majority of shares issued; it grants shareholders voting rights at corporate meetings and eligibility for dividends, though dividends are discretionary and not guaranteed. Preferred stock functions as a hybrid security: it generally does not convey voting rights, but it pays a predetermined, fixed dividend and holds priority over common stock for dividend payments and asset claims during corporate liquidation. While historical data demonstrates that stocks yield the highest long-term growth potential among major asset classes, they carry high market volatility and liquidity risks, meaning investors can lose their entire principal if the issuing corporation enters bankruptcy.