NASDAQ

NASDAQ is the world's oldest electronic stock market and the largest stock exchange in the United States. It has no central trading location or exchange floor.

Instead it uses a fully automated, open market, multiple dealer trading system, with many market makers competing to handle transactions in each individual stock.

NASDAQ handles more initial public offerings than any other US exchange. It lists many emerging companies as well as industry giants, especially in biotechnology, communications, financial services, media, retail, technology, and transportation.