Constellation Software-backed Perseus Group, an operating group, completed the acquisition of Winklevoss Technologies, a provider of defined benefit pension plan valuation and administration software. Financial terms were not disclosed. “We are excited to be joining the Perseus Group, which marks a significant milestone in WinTech’s story. We look forward to continuing to develop market leading benefits software for our customers and appreciate that the Perseus Group gives us a permanent, nurturing home to help us build upon our strong foundation,” Mark Tillman, WinTech General Manager.