Apple's record-high stock prices: 4 theories

posted on September 21, 2011, at 7:45 AM Best Opinion:  MarketWatch, Mac Observer, StreetInsider.com … The stock market has been in turmoil recently, but Apple shares have been on a smooth, steady climb. On Monday, the tech giant’s stock reached an all-time high of $413.23 before closing at $411.30. the good times continued Tuesday, with …