When the NASDAQ stock exchange began trading in 1971, it was the world’s first electronic stock market. Founded in New York by the National Association of Securities Dealers, NASDAQ initially existed as computer bulletin board system that did not yet connect buyers and sellers. Today, it lists more companies and has more trading volume than any other US electronic stock exchange. In 2007, NASDAQ acquired the oldest stock exchange in America for $652 million. Which exchange did NASDAQ buy? Discuss
Source: The Free Dictionary