NBC News – Trading in all symbols was halted on the New York Stock Exchange floor Wednesday due to an apparent technical issue.
"NYSE/NYSE MKT has temporarily suspended trading in all symbols. Additional information will follow as soon as possible," the NYSE said in a statement on its status page.
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The exchange was investigating the issue that caused the halt, Reuters reported, citing a source. Trading stopped around 11:30 a.m. ET.
(1 of 2) We’re experiencing a technical issue that we’re working to resolve as quickly as possible.
— NYSE 🏛 We Are Living Tech (@NYSE) July 8, 2015
(2 of 2) We're doing our utmost to produce a swift resolution & will be providing further updates as soon as we can.
— NYSE 🏛 We Are Living Tech (@NYSE) July 8, 2015
The NYSE said all open orders would be canceled, according to Reuters. The issues seemed to be limited to the NYSE floor, and the exchange said it did not affect the NYSE Arca and NYSE Amex/Arca Options.
The Nasdaq reported no technical issues and said it continues to trade NYSE-listed stocks.
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 put out a notice at 10:37 a.m. ET that the problem was resolved.
"It's been a little bit of a bumpy day. We had some technical problems even before the opening," said Art Cashin, director of floor operations at the NYSE, in a CNBC interview.
"This will not cause a move in any particular direction, so I would kind of wait it out and see what happens," he added.
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. There was also no indication the shutdown was a cyberattack, they said.