Down 15%+ In 15 Days By: TalkMarkets October 22, 2018 at 14:18 PM EDT October is still only a little more than 15 trading days old, but there are already 31 stocks in the S&P 500 that are down over 15% on the month. Read More >> Related Stocks: Activision Blizzard Adv Micro Devices American Airlines Gp Fluor Corp Marriott International Newell Rubbermaid W.W Grainger