Auto stock General Motors Co (NYSE:GM) was last seen up 1.4% at $48.40. It's seen some choppy price action lately, but the 50-day moving average has moved in as close support. Furthermore, a pullback to this trendline has preceded gains in the past. Per Schaeffer's Senior Quantitative Analyst Rocky White, the stock is within 0.75 of the 50-day moving average's 20-day average true range (ATR) after spending at least 80% of the last 10 days and 80% of the last two months above it. Within these parameters, 12 ...