Glossary A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 1 | 3 | 4 | 5 Definitions by InvestorWords.com   What is...? stock An instrument that signifies an ownership position, or equity, in a corporation, and represents a claim on its proportionate share in the corporation's assets and profits. also called equities or equity securities or corporate stock. see also common stock, preferred stock, authorized shares, borrowed stock, certificate, convertible stock, consumer stock, control stock, corporation, cumulative preferred, cyclical stock, deal stock, donated stock, dividend, distribution stock, float, full stock, going public, guaranteed stock, high-tech stock, income stock, initial public offering, marginable stock, market value, security, share, shareholder, ticker symbol, ESOP, employee stock repurchase agreement, Joint Stock Company, nonstock corporation, nonvoting stock, original issue stock, outstanding stock, penny stock, story stock, synthetic stock, treasury stock, unissued stock, vetoing stock, voting stock, widow-and-orphan stock. Copyright ©2009 by InvestorGuide.com. All Rights Reserved.