I'm holding quite a few, but my biggest by value right now is as follows:
ARK
BTC
ETH
LTC
BCH
Ark has been very good to me. One of the few ICOs I went for because I believed in what they were doing and there strategy of just knocking out their goals instead of spending a lot on advertising. They've only now hired a PR firm and it's done lovely things for their price, but I already recouped over ten x what I paid for it- now just letting it sit and earn me more ARK.
Ones I wish I have some but will be buying more as I can:
EOS
XRP
And I desperately need to get into DASH! That one took me totally by surprise, but the more I look into it the more I love what they are doing. I think they are going to be in it for the long haul.