As this drops are happening in the coins and tokens market I used to hold my coins and tokens and not sell them in this drop. Potential coins and tokens specially. This kind of drops was a great chance to buy more potential coins and tokens to add up on your assets but it is more risky than selling your coin in half of its original price. It is like gambling also if you didn't risk surely you will not win.
Well i'd stick though to bitcoin and other established coins like eth when holding. Too many potential coins now that end up not having any value. Eth and trx are currently on my watch list as i think this is a very good time to stock up on these coins.