Shares of Apollo Group (NASDAQ:APOL) fell 7.8% Monday morning after the company said it predicted that enrollment in the third quarter would turn negative.The company reported topping second quarter earnings with an EPS of $0.58, topping analyst estimates of $0.37 per share and revenues for the quarter were $969.60 million, better than consensus estimates of $932.82 million.Apollo Group (NASDAQ:APOL) has potential upside of 38.1% based on a current price of $39.88 and an average consensus analyst price target of $55.08.Apollo Group is currently below its 50-day moving average (MA) of $49.18 and below its 200-day MA of $47.58.In the last five trading sessions, the 50-day MA has fallen 1.71% while the 200-day MA has remained constant.