Trading was suspended for almost four hours on the New York Stock Exchange (NYSE) after an internal technical problem occurred this morning.
Trading on NYSE was suspended at 11:32 a.m. and did not resume until after 3 p.m. According to the exchange, the suspension was not a result of a cyber breach.
[You can read Anthony Malakian's thoughts on the outage here.]
At 3:05 p.m. trading on NYSE MKT resumed, followed by NYSE and NYSE MKT (Tape C) at 3:10 p.m. According to the exchange, closing auctions will continue as normal. According to a trader speaking to The New York Times, exchange employees canceled about 700,000 order manually and then rebooted its systems.
All systems are back up and running with the exception of Openbook feed for NYSE MKT primary markets.
At 11:32 a.m. EST the NYSE market page announced the suspension of trading.
"NYSE/NYSE MKT has temporarily suspended trading in all symbols. Additional information will follow as soon as possible," according to the exchange.
NYSE Arca and NYSE Amex/Arca Options were not affected by the suspension of NYSE.
The system outage was preceded by issues that occured earlier in the morning.
At 10:37 a.m. NYSE announced due to a technical problem customers may not have received acknowledgements on orders submitted before 9:30 a.m. for 220 symbols. Customers were advised to cancel any orders that they did not receive an acknowledgement for.
At 11:51 a.m. NYSE updated its status page, stating that all open orders will be cancelled.
At 12:28 p.m. @NYSE posted a three-part tweet explaining the situation.
"The issue we are experiencing is an internal technical issue and is not the result of a cyber breach. We chose to suspend trading on NYSE to avoid problems arising from our technical issue. NYSE-listed securities continue to trade unaffected on other market centers," the tweets said.
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