Trading on the New York Stock Exchange resumed at mid-afternoon Wednesday after being halted for more than three-and-a-half hours by a technical issue.
Officials provided few details on the problem that they said caused the suspension of trading from 11:32 a.m. until about 3:10 p.m. ET. Earlier, the NYSE took to Twitter to assure the public that the shutdown was not caused by a cyberattack, a message that was echoed by the Obama administration.
"It's not a good day. I don't' feel good for our customers who are having to deal with the fallout," NYSE President Thomas Farley told CNBC after trading resumed.
He indicated the problem was likely related to an earlier problem that had been deemed fixed.
Just after 8 a.m. ET on Wednesday morning, the NYSE put out an alert about "a reported issue with a gateway connection" affecting certain symbols. It issued a notice at 10:37 a.m. ET that the problem was resolved.
"We opened the market as usual. All the NYSE-listed stocks opened without incident. Around mid-morning, we started to see some concerns about the way trading was occurring. Customers weren't getting all of the messages back that you otherwise expect," Farley said.
Two U.S. officials told NBC News there was no indication the NYSE shutdown was related to the computer issue that temporarily grounded all United Airlines flights on Wednesday morning. They also said there was no indication of a cyberattack.
Separately White House Press Secretary Josh Earnest said, "There is no indication that there are malicious actors involved."
