Shares of the coffee chain soared on news of a new CEO.Shares of Starbucks (SBUX 1.04%) were skyrocketing this week after the coffee giant stunned investors by dumping CEO Laxman Narasimhan just 17 months into his tenure and naming Chipotle (CMG 4.49%) CEO Brian Niccol as its next leader.Niccol is highly regarded for arriving at Chipotle when the business was still crushed by the E. coli crisis and leading a successful turnaround. The stock has been up roughly 800% since then.Starbucks investors are clearly ...