Schaeffer's Senior Quantitative Analyst Rocky White compiled a list of the worst 25 stocks to own in October, with data going back 10 years. Right at the top of the list is Chipotle Mexican Grill Inc (CMG), marking a monthly loss in eight of the past 10 Octobers. Averaging a return of -4.7%, a pullback of this magnitude from the equity’s current perch at $41.20 would put the shares at$39.26, back below recent pressure at the $40 level. Worst S&P 500 Stocks in October (10 Years)Schaeffer's Investment Resear ...