When my portfolio has risen about 50% i take out 10%. (5% in euro wallet and 5% in new ICO's)
My strategy is very simple, I work out about project from where I got tokens if I think tokens are good & have a good future then I will hold them even the price goes down, because Im sure at one day it will go up.
On other side I sell 50% that tokens which are no good in my opinion & Im not sure will I get profit or not so I will keep hold that coin or token 50%.