How volatile is the U.S. stock market.

Via visualizing economics,

                       This interesting chart shows,how volatile U.S. stock market is during October.According to CATHERINE MULBRANDON   " 8 out of the 22 worst days occurred in October (including the infamous 20% drop in 1987). Fear not! October has 5 out of the 15 best days. After all what comes down, must go up."