The other type of stock exchange is called an Over-the-counter exchange (the most well known of these is the NASDAQ). In this type of exchange, the specialists will purchase stock from people looking to sell it, and hold onto it until someone wants to buy it. This increases the liquidity of the market; in an OTC market, one can almost always buy or sell a stock. The downside of this is that the specialists who run the markets take a larger share [1]