optionsXpress

At this moment optionsXpress displays SPY up by 13.43 points or +12.78%. According to my data the SPY was traded yesterday at 16:00 at $117.86. Now it is trading at $118.41 which is only 0.55 points or 0.47% advance - and this is correct and it could be verified on Yahoo finance. It looks like optionsXpress have bad data after all... The question is rising whether you may trust data and charts provided by a broker...