Shrinking margins cloud Costco's profit beat, shares fall

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Amazon.com Inc (NASDAQ: AMZN) Delayed: 232.79 --0 (-0%)
Previous Close $232.79    52 Week High $847.21 
Open $232.79    52 Week Low $474.00 
Day High $232.79    P/E 394.56 
Day Low $232.79    EPS $0.59 
Volume 1,348,635       

Costco Co. (NASDAQ: COST) Delayed: 951.35 --0 (-0%)
Previous Close $951.35    52 Week High $169.73 
Open $951.35    52 Week Low $138.57 
Day High $951.35    P/E 205.48 
Day Low $951.35    EPS $4.63 
Volume 46,812