What type of markets do 4% up days happen in?

I will give you a hint: it's not bull markets.

Huge up days are most likely reactions within bear markets. We had a shitload of them in P1.

So as a bull, days like today (despite a nice bounce to kick the bears in the crotch for a few hours) are *not* what you want to see. Besides, the bears got wise and started wearing a cup.

Addition - very nice chart