Last night Apple's share price declined to $392.05, wiping 44.16% o $310.05 of the value of each AAPL share since September 2012 (the stock closed at $702.10 on 19 September), and dropping to its lowest level since December 2011. In the first quarter of the year Apple was one of the worst performers of the S&P 500 in what is being described as a crisis among investors.Related StoriesApple: Unfortunately, no longer the underdogApple stock manipulation: rogue AAPL trader pleads guilty, may face 25 years in prison