Trader Tommy Kalikas (right) worked Thursday on the floor of the New York Stock Exchange.
Trader Tommy Kalikas (right) worked Thursday on the floor of the New York Stock Exchange. Seth Wenig The Associated Press
Trader Tommy Kalikas (right) worked Thursday on the floor of the New York Stock Exchange. Seth Wenig The Associated Press

New York Stock Exchange blames software upgrade for Wednesday’s outage

July 09, 2015 07:36 PM