Stocks have been hammered since Obama won because of his stance on higher taxes for the rich and the whole fiscal cliff situation. The first time Obama won the dow for instance dropped 6-8% and stayed down for 11 days if i remember correctly. The S&P500 is also down(Apple is something like 5% of the S&P500). With key long term support breaking you do tend to get quite a sell-off. The princes often go down when sentiment is negative. I'll turn around fairly quickly, and if anything this period is a damn good buying opportunity. Everyone is watching and waiting, trying to pick the bottom.
Apple's fundamentals are still good, although showing some cracks it must be said.