A stock is a form of security that indicates the holder has proportionate ownership in the issuing corporation and is sold predominantly on stock exchanges. A full stock issue can be either a preferred share or common share.It can be hard to ignore the headlines around the stock market. Stock: A type of security that signifies ownership in a corporation and represents a claim to a part of the company's profits or losses. The preceding transactions of Clark Company have been evaluated and computed. When someone says they are "stocking up," it usually means that they are buying a large quantity of something in advance of a possible shortage or future need. His issues with Zelle, which is a peertopeer bankbacked digital payment service, are rooted in the security of your money. Clark has resources to help you file for free or cheap. A stock issue is when a company offers a class or series of securities for sale. This can include stocks or bonds.