Stock Market

Definition: It is a place where shares of pubic
listed companies are traded. The primary market
is where companies float shares to the general public
in an initial public offering (IPO) to raise capital. ... A
stock exchange facilitates stock brokers to trade
company stocks and other securities.

or

The stock market is the market in which shares
of publicly held companies are issued and traded
either through exchanges or over-the-counter markets.