There is an amazing tool for keeping track of your alt-coins.
The tool is called Cointracking.
Basically it keeps track of all your trades(usually automatically through exchange API’s) and allows you to see each coins profit or loss. It is an amazing tool for keeping track of a crypto portfolio. I use it everyday to find out if a coin I am holding is in the sell zone(or the buy more zone).
It has so many features that it would take me a long time to point them all out. Needless to say that it is the most comprehensive tool for tracking cryptocurrency portfolios I have found. There is a free version but I upgraded to get more features.
I really love it, I hope you like it too.
You can check it out at cointracking.info
Happy trading!