From Tea with Dave (free sign-up here):

The obvious question is: how can the bull market possibly be over considering that we enjoyed that amazing 405-point rally on the Dow just three days ago (Monday, May 10)? Wasn’t that an exclamation mark that the bull is alive and well?

Far from it. There have been no fewer than 16 such rallies of 400 points or more in the past, and 12 of them occurred during the brutal burst of the credit bubble and the other four took place around the tech wreck a decade ago. See Chart 2 below.