You can hold a coin till the price of that coin or ICO increases 50% - 100% or more than the base value. It's a sure shot. You have to be patient to make a profit. But sometimes this won't happen as you know all the ICO's are not successful or can't be listed in the CMC. On the other hand, you can stake the coin as well if you think this coin is 100% potential then you can get profit for staking the coin as well. All over these all up to your mind and your strategy.