The New York Stock Exchange began reopening about 3:15 p.m. Wednesday after a nearly four-hour shutdown that the exchange’s Atlanta-based owner said was due to a technical problem, not a cyber attack.
Trading had been suspended at 11:32 a.m.
Atlanta-based Intercontinental Exchange, which bought the NYSE two years ago, sent out a Tweet stating that “the issue we are experiencing is an internal technical issue and is not the result of a cyber breach.”
A White House spokesman also discounted a cyber attack, saying there was “no indication” of a cyber attack.
The New York Times reported that, according to an unnamed trader on the floor of the exchange, traders were told the problem involved a software update that caused problems soon after trading started.
Two other high profile companies also experienced problems with their networks Wednesday that temporarily shut down operations.
The Wall Street Journal said its web site went down at about the same time as the NYSE glitch, and United Airlines suspended flights Wednesday morning for a time, citing a “network connectivity issue.”
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