IMO SHAK is a long term investment. The fundies are there.
http://www.fool.com/investing/general/2015/09/04/why-shake-shack-inc-stock-dropped-266-in-august.aspx?source=eogyholnk0000001
http://seekingalpha.com/article/3491366-my-long-term-analysis-on-shake-shack
Zaks has positive notes...