Cooler but still well above normal this week

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Trading has resumed on the New York Stock Exchange, after computer related problems forced the exchange to suspend trading for more than three and a half hours.

The exchange "temporarily halted" trading as of 11:32 a.m. ET; trading resumed at approximately 3:10 p.m. ET.

 in which it said the issue was technical and not due to malicious activity:


The FBI offered its assistance to the exchange, but the NYSE said no further action was needed. The White House says President Obama had been briefed on the trading halt and the Treasury Department is monitoring the situation.

Securities and Exchange Commission Chairwoman Mary Joe White issued this statement:

About an hour before trading was halted, the exchange said it had a technical issue that had been resolved.

The exchange says all open orders at the time of the shutdown will be canceled.

Trading continued on Nasdaq and other markets, which include stocks also traded on the NYSE.

Before the halt, the Dow Jones Industrial Average and the broader S&P 500 were down.

 spotted this chart from Eric Scott Hunsader, founder of the market data and analytics firm Nanex, illustrating the 

dramatic drop-off in NYSE trading activity


Despite the big brouhaha over the NYSE's troubles, to investors, the trading halt on Wall Street may not mean much of anything. 

 says the NYSE has handled about 20 percent of all U.S. stock trading in recent months, with Nasdaq and BATS Global Markets a bit less. About the only investors who would notice the NYSE halt are those with trades pending:



The NYSE was not the only large institution to experience computer glitches Wednesday. 

 for a time Wednesday morning, which it blamed on "connectivity issues." The halt has since been lifted and flights have resumed.
The

Business and Economic News

Computer-related problems forced the exchange to suspend trading for more than three hours. The issue was not connected to malicious activity, officials said.

Trading resumes on New York Stock Exchange

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