Leadership can make all the difference, as Starbucks (NASDAQ: SBUX) stock has shown with its largest one-day gain in history, which amounted to 24.5% after the company appointed former Chipotle (NYSE: CMG) CEO Brian Niccol as its new boss.Niccol became Chipotle’s CEO in 2018, and since then, CMG stock has surged 773%, being outperformed by only nine companies from the S&P 500 during this period.His effect on SBUX stock was immediately felt, as the 24.5% daily gain on the stock market replicated an increase ...