The potential for Apple is there. The TV, the games, the wearable, bigger phones, payment, cheaper phones, ipad pro, ... Problem is Apple is not delivering anything but incremental upgrades of existhing product. The stock needs a cataclyst, or hope of something to rise.
That being said, if institutional investment are low, when something do happens, the stock will rise quickly because they will all want to move in at the same time with huge amount of money.