Former Schonfeld Securities trader Dmitry Balyasny, founder of Chicago-based Balyasny Asset Management, is not flashy. But when the Jumpstart Our Business Startups Act (JOBS Act) became law in 2013, allowing hedge funds to advertise and promote their businesses, BAM was one of the first to take advantage of it. The hedge fund firm placed an ad showing skiers atop a mountain in Pensions & Investments magazine in early 2014 with the line, “Performing In All Conditions.” It’s difficult to know what effect the marketing had on BAM’s asset growth, but the firm’s capital base has expanded by about $3 billion since then…