Shares of discount retailer Dollar Tree Inc (NASDAQ:DLTR) are 4% higher in premarket trading, looking to open just below $70 after it announced CEO Rick Dreiling will step down after two years in the position. Chief operating officer Michael Creedon Jr. was tapped to serve as interim CEO, and the company also reiterated its guidance for the third quarter and commitment to reviewing its Family Dollar segment's strategic options.Analysts are weighing in following the news. Telsey Advisory Group downgraded DLT ...