A wholesaler dealer in securities is known as a jobber. A jobber is a middleman who buys securities in large quantities from the issuing company or stock exchange, and then sells them to stockbrokers, other traders or individuals in smaller quantities. They typically deal in large blocks of securities and make their profit by buying at a lower price and selling at a higher price. Unlike a stockbroker who acts as an agent on behalf of their clients, a jobber is a principal in the transaction and takes the risk of holding the securities until they can be sold.