Ascent Venture Management and a private equity fund run by Landmark Partners have purchased the investments run by the Pioneer Groups domestic venture capital business for $35 million, said Walter Dick, managing director at Ascent. In connection with the purchase, the entire former four-person management team and six-person support staff from Pioneer Capital, a subsidiary of Pioneer Group, spun off into a new venture management company, Ascent, to manage the investments, which total around $100 million. Investors in the funds include the pension funds of the Massachusetts cities of Worcester, Cambridge, Brockton and Lowell; Worcester County, Worcester, Mass.; Middlesex County, East Cambridge, Mass.; Massachusetts Bay Transportation Authority, Boston; and Massachusetts Housing Finance Agency, Boston. The funds focus on early-stage investments, recapitalizations and buyouts in technology companies.