Nasdaq ( $Nasdaq (NDAQ.US)$ ), opens new tab, which lists sh...

Nasdaq ( $Nasdaq(NDAQ.US)$ ), opens new tab, which lists shares of some of the biggest U.S. tech companies on its exchange, said it had resolved a technical glitch that affected trading for more than two hours before Monday's open and that all systems were back up.
The company did not give details about the severity of the problem, its second technical glitch in months, but said on its website it was related to the matching engine - software systems that match buy and sell orders.