Apple's shares are down 7% today after reporting disappointing sales for the iPhone in the final quarter of 2013. Regardless of records setting 51 million iPhones being sold in the quarter, the number was still lower than what Wall Street analysts predicted. The expected sales for the quarter were 55-56 million iPhones to be sold in the quarter. Guru investor Carl Ichan announced through twitter today that he purchased another $500 million in Apple shares, but the price is still down. Apple shares fell as much as 9% in after hour trading on Monday night.