Based on price action and 52week historical chart dating back to 2Q13 earnings, you can see the previous ABCD move and 1.618 FIB extension up to 72 price level. With most recent price action, a second ABCD move for three drives pattern, and FIB extension confluence (1.414 from move up to 72, and 1.618 from most recent retracement) ..gives evidence for the next extended price target around the 84 level. Further action can move it up to 90 if we do not see a retracement before then.