ABM Industries Inc. has filed notice with the Pennsylvania Department of Labor and Industries indicating it lost its contract with Vanguard Group, affecting an undisclosed number of employees it has in Philadelphia and the suburbs. When contacted by the Business Journal, a Vanguard spokeswoman confirmed that the company has changed facilities management vendors from ABM to Cushman & Wakefield. In a March letter to the state, ABM referenced the termination of the Vanguard contract and that the company would cease to provide services to the mutual fund company in 31 office locations throughout Malvern, Wayne and Philadelphia. Some of those sites included Vanguard's main campus at 100-1000 Vanguard Blvd. and its properties along Moorehall Road in Malvern as well as Devon Park Drive in Wayne and 2300 Chestnut St. in Philadelphia.