I always wonder how the brain of these people works:
Oh look, the price is low, looks like a good time to sell!
1 hour later:
Oh look, the price is higher now, let's buy some.
4 hours later:
Oh damn, the price is low again, i must sell before it goes up.
As long as they're doing it with their own money, it's fine. Doesn't affect us in the long run.