NASDAQ (acronym for National Association of
Securities Dealers Automated Quotations) is the largest U.S. electronic
stock market.
When it began trading on February 8, 1971, it was the world's first
electronic stock market. With approximately 3,300 companies, it lists
more companies and, on average, trades more shares per day than any
other U.S. market.
NASDAQ is the primary market for trading NASDAQ-listed stocks.
Approximately 54% of NASDAQ-listed shares traded are reported to NASDAQ
systems. NASDAQ allows multiple market participants to trade through its
electronic communications networks (ECNs) structure thereby increasing
competition.