Over and above that, markets have circuit breakers built in to stop trading altogether when big events "disrupt" the markets. These clearly do not exist with cryptocurrency markets but the question is will they. At the moment 99% of people are probably putting there lunch money into crypto, not their pension. The volatility of these markets would make pension fund managers wilt. So for them less trading days to overreact may be a good thing as well as circuit breakers etc. The other that I can think of is trading on Margin. Margin calls on a 40% stock market crash would be devastating but can happen almost anytime even with venerable Bitcoin. But with crypto there are very few derivatives so far.