in my opinion i choose holding
HOLD is very good, but we always have to be aware of when it's time to sell our currencies, if you can hold it just because everyone thinks the price is going to be a moon, people should set a goal, something like: the price reaches the value X or I will hold until 5 years from now. But we always have to have a goal
In terms of high risk level, obviously short trade is the one of course.
Sometimes Hold can be a lot riskier than day trade. Look at the prices of altcoins, look at neo, until months ago Neo was in the $160 and today Neo fell below $7... imagine having a loss like that?