Carvana Co (NYSE:CVNA) is trading 2.3% higher at $324.67 this afternoon, attempting to extend a rebound off the$280 level, a site that captured its June pullback as well. Just last month we suspected the 126-day moving average to be a level of support for the shares given its historic significance, while this time CVNA is nearing a new bullish trendline. Following last month's signal, the stock popped as high as $372 -- just three days later.Per Schaeffer's Senior Quantitative Analyst Rocky White, the stoc ...