Centralized securities trading markets where
securities are bought and sold in an orderly manner through security brokers. Securities, including equities, bonds, options, closed-end funds, and futures, are bought and sold through bid and offer prices.
The highest bid and the lowest offer have precedence in completing a purchase or sale, respectively. The first bid or offer has priority over later bids and offers. Of the nine major auction exchanges in the United States, the largest is the New York Stock Exchange, where more than 3,000 different securities are traded daily.
See also dealer exchanges .