CNBC Real Time for iPhone

CNBC Real-Time is the only free app that delivers Real-Time quotes before, during and after market hours (4am-8pm)...direct from the NYSE and NASDAQ, Real-Time & Historical Interactive Charts, offering custom timeframes from one day to 5 years, including pre & post market trading.

Download link: http://itunes.apple.com/us/app/cnbc-real-time/id334125582?mt=8#