Definition of the American Stock Exchange from the Oxford Advanced Learner's Dictionary

 

the American Stock Exchange

 
BrE
 
; NAmE
 
(abbreviation AMEX)
 
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a financial market that used to be the second largest in the US. It began in 1911 and is in the financial district of New York. In recent times it has lost many members to the International Securities Exchange. see also New York Stock Exchange