All altcoins are not the same. Some good projects have done very well while some bad projects have gone down
even below ICO prices and not given much gains. One has to choose carefully and cut-down the losers.
In any case we need wait: for dead cat bounce if you don't want hold anymore and want exit or for next rally if you believe in project
As what i have observed there are so many ICOs that promises only at start and then it will just end up nothing, but still there are so many projects that are totally potentially good and has a bright future, and for me good ones will remain in the end, besides its also a natural phenomenon that when bitcoin rises alt coins will go down expected from most of the alt coins.