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(Left to right) Aynsley Stevenson, Dan Kiefer, Sam Barnett, Matt Aven and Dan Marqulies, members of the SBB Research Group team, chat during a meeting in their Northbrook office. All but Kiefer are Highland Park High School grads. Alan Henry/22nd Century Media
Alan P. Henry, Freelance Reporter
9:19 am CDT June 19, 2014

Twenty-four-year-old Sam Barnett said playing competitive tennis in high school helped him learn about teamwork, commitment and other life lessons that have been integral to the success of his investment management and research firm, SBB Research Group, 450 Skokie Blvd., in Northbrook.
Barnett played for Highland Park High School from 2005-2008, winning the state doubles championship his senior year.