It has been a wild ride for stocks the past several months. However, when all is said and done, the S&P 500 is up 1.4% in 2018 through the end of October to 2,711. Some famous stocks, like Facecbook, have fallen into the correction category. It is down 14% to $153. The worst performing S&P stocks are off much more than that. The following 10 are off more than 40% this year.