Order Reprints Text size Drugstore chain Walgreens has seen shares slump over the last two years. But Guggenheim analyst Glen Santangelo upgraded the stock to Buy and set a $55 price target. Joe Raedle/Getty Images Walgreens Boots Alliance stock is rising early Monday, following two upgrades by and Baird Guggenheim, which argue that the worst may be over for the longtime laggard. At Guggenheim, analyst Glen Santangelo raised his rating on Walgreens (ticker: WBA) to Buy from Neutral, and established a $55 price target. He writes that the drugstore chain, while still facing plenty of headwinds, is “shifting from value trap to value opportunity.”