So, relative to other companies in the industry, you agree AAPL (your distinction is meaningless, but ok) is very undervalued? Even at $700 AAPL was undervalued relative to other companies in the market (based on real or anticipated growth). Today it is just silly.
I believe you think that shareholder behavior is somehow rational.
I believe there's a middling that will happen over the coming months (somewhere between $400 and $600) and we'll see a valuation more fitting to a company who's top sellers are entering maturing markets.
That isn't to say there isn't upside though - still plenty of opportunity out there in underdeveloped markets for smartphones and for Apple in the larger smartphone markets.
Also, the iWatch and iTV and advances in television programming (moving from the current cable model to an ala carte style). Much Apple is working on I'd bet, and plenty we don't even know yet.