John Glass  Morgan Stanley The buy side says: “He has the golden touch on stocks.”

According to one buy-side advocate, two words best describe Boston-­based John Glass: “thoughtful and thorough.” The 47-year-old Morgan ­Stanley analyst, who is No. 1 for a second straight year — and for the third time in four years — upgraded Starbucks Corp. from equal weight to overweight in March, at $33.36. After conducting a survey of 1,500 coffee drinkers, Glass concluded that a significant portion of Green Mountain Coffee Roasters’ customers and users of the single-cup brewers made by its Keurig subsidiary would switch to Starbucks-­brand brew if the Seattle-­based company were to offer a similar product. Three days after the upgrade, ­Starbucks and Waterbury, ­Vermont–based Green Mountain announced that they would join forces to sell Starbucks coffee for Keurig machines. Starbucks’ stock had percolated to $38.62 by late August, for a 15.8 percent gain that led the sector by 9.3 percentage points.