When Morten Middelfart went searching for seed investors for Social Quant, his Twitter analytics company in Tampa, Fla., his banker suggested pitching Atlantic Merchant Capital Advisors, a local family office. One informal meeting with the private investment firm, which manages the wealth of individuals and their families, was all it took to land Middelfart’s venture a high-figure investment early this year, along with ongoing advice, customer introductions and part-time office space.
