Stephen Maresca  Morgan Stanley The buy side says: “Stephen provides access to the broadest range of industry observers and participants.”

Stephen Maresca “does great work on the midstream sector and in finding value in restructuring opportunities,” one buy-­sider attests. The 36-year-old Morgan ­Stanley analyst, who climbs the final rung to make his debut at No. 1, highlighted his overweight rating on Tulsa, ­Oklahoma–based ­Williams Partners in September 2010. Maresca was convinced that the market didn’t appreciate the company’s organic growth profile and exposure to increasing demand for ­natural-gas liquids. The stock bolted 33.6 percent, from $40.54 to $54.18, and surged past the Standard & Poor’s MLP index by 26 percentage points, through August. ­Maresca joined ­Morgan Stanley in 2008 from UBS, where he covered energy companies; he earned a bachelor’s degree in accounting from Rhode Island’s Providence ­College in 1997.