STP Investment Services, a U.S.-based, end-to-end investment operations service provider with >USD340bn AuA, has acquired Tower Fund Services, a U.S.-based fund administrator providing an outsourced solution for alternative investment managers and family offices. Tower offers fund administration to private equity funds, cryptocurrency funds, hedge funds, venture capital, fund of funds, real estate, and direct lending funds. Tower has USD1bn AuA. Tower co-founders Vincent Sarullo and Kinjal Amin will help guide integration of the business with STP.