AutoZone, Inc. (NYSE:AZO) shares were little changed Wednesday as investors digested a fresh bullish call from JP Morgan.Analyst Christopher Horvers stuck with an Overweight rating and higher estimates, citing resilient demand and improving long-term earnings power.Horvers reiterated the rating, with a price forecast of $4,850.Also Read: AutoZone’s Domestic ‘Do It For Me’ Business Driving Market Share GainsHorvers said he raised near-term estimates after stronger comparable performance, though lower gross m ...