A stock market, stock exchange, or share exchange is an arrangement in which ownership interests are conveyed to multiple buyers and multiple sellers of shares, who collectively represent ownership interests in companies; these can include securities registered on a public share exchange. The shares are usually issued by a company in either debentures or common-stock shares. Securities typically offered on a share market include common stocks, preferred stocks, debt securities, mortgage notes, and other forms…
"An Introduction to Shares of Stock on the Over the Counter Bulletin Board"