NYSE Resumes Stock Trading After Blackout Lasting Nearly 4 Hours

July 8, 2015 12:07 p.m.

The New York Stock Exchange reopened at 3:10 p.m. EDT Wednesday, after a technical issue caused an abrupt halt in securities trading that lasted for nearly four hours.

The Dow was down more than 200 points as markets reopened.

NYSE officials still have not said what caused the technical “glitch” that spurred the decision to shutter the market.

“NYSE MKT has temporarily suspended trading in all symbols. Additional information will follow as soon as possible,” a statement on NYSE’s status page said.

NYSE officials confirmed on Twitter that the suspension is because of an “internal technical issue” and not the result of a cyber breach.

Stocks continued to trade on other markets like S&P 500 and Nasdaq, Bloomberg reported.

NYSE tweeted about the stoppage:

The glitch comes hours after all continental United Airlines flights were grounded due to network connectivity problems. The Wall Street Journal’s site also stopped working after NYSE trading had stopped.

The Department of Homeland Security told CNN there is “no sign of malicious activity” at the NYSE or in United’s technical issues.

Because NYSE is one of 11 different stock exchanges, this glitch is unlikely to hurt the day’s markets, as trading will likely just shift to another open exchange, according to analysis from Mashable Business. If the problem isn’t resolved by close of the day’s trading, however, shockwaves from the glitch could affect other stock exchanges.

This post has been updated.

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