Some of the investments I made were 50% for BTC 20% ETH and the remaining 30% for some altcoins that have good potential in the future. Management like this is good to do, because you don't put eggs in one basket, there are still many baskets to be filled.
for some market shift that we havent seen before thats why always take consideration when it comes to risk management and prepare yourself on probable things to happen.
Hold when you do see that there might be some market change and does have potential and sell whenever you do see some greens or gains on your investment.
Its up to someones decisions whether they would be selling or buying.