National Association of Securities Dealers Automated Quotation. An electronic stock market run by the National Association of Securities Dealers. Brokers get price quotes through a computer network and trade via telephone or computer network. The index that covers all the stocks that trade on this market is called the Nasdaq Composite Index. Since there is no centralized exchange, Nasdaq is sometimes referred to as an over-the-counter market, or a negotiated marketplace.

那斯达克(美国全国证券交易商协会自动行情指数)。