text: SAN FRANCISCO (MarketWatch) -- Trading in all Nasdaq-listed stocks and options was halted on Thursday due to technical problems on the bourse, according to Nasdaq OMX Group (NASDAQ:NDAQ) . The exchange sent out a series of emails alerting investors that it was experiencing issues with "quote submissions." In response, the New York Stock Exchange has also stopped trading in all Nasdaq securities at the request of Nasdaq OMX. "All orders in those securities have been cancelled back to customers," said NYSE in a statement. The Nasdaq Composite index (NASDAQ:COMP) was last at 3631.17, up 31.38 points, before trading was suspended. There was no immediate word on when transactions will resume. [Updated with NYSE developments.] 
   
   Read the full story: 
   
   Nasdaq halts all trade in Nasdaq-listed securities 
   
   U.S. stocks up; Nasdaq-listed trade halted ||||| Article Excerpt 
   
   A technical glitch knocked out trading in all Nasdaq Stock Market securities for three hours Thursday afternoon, an unprecedented meltdown for a U.S. exchange that paralyzed a broad swath of markets and highlighted the fragility of the financial world's electronic backbone. 
   
   Nasdaq officials scrambled to figure out what happened and resume trading. They shared few of their findings with trading firms or the public during regular trading hours, sowing confusion across Wall Street and leaving many investors frustrated. 
   
   The decision to reopen trading with about 35 minutes to go before the close came after exchange officials were sure that banks ...
target: – Nasdaq is back in business after an apparent technical glitch brought the exchange to a rare halt this afternoon for more than three hours, reports the Wall Street Journal. The exchange hasn't fully explained what happened, but trading of all Nasdaq securities ground to a halt just after noon today, reports MarketWatch. Other exchanges quickly suspended trading of Nasdaq stocks. "All orders in those securities have been canceled back to customers," says the New York Stock Exchange in a statement. Nasdaq blamed "quote submissions" in an email to investors.