About Founded 2014 Headquarters San Francisco Affiliate Since 2020 About Founded in 2014, Jackson Square is an independent, majority employee-owned investment manager specializing in long-only, growth-oriented equity investing. Their approach has been honed by a team who has worked together for more than two decades, resulting in a unifying investment philosophy of concentrated, long-term investing focused on intrinsic business value growth. AMG Products from this firm JSPJX Jackson Square Large-Cap Growth Fund View Fund Details DCGTX Jackson Square SMID-Cap Growth Fund View Fund Details