Mandatum Asset Management, a private equity firm, agreed to acquire Trevian Funds AIFM, the fund business of Trevian, a property investment group. Financial terms were not disclosed. “We know Trevian well as a company, as we have several years of collaboration behind us. Trevian’s excellent knowledge of real estate made it a natural acquisition for us,” Lauri Vaittinen, Mandatum Asset Management CEO.