Boston Advisors acquired the assets of Babson-United Investment Advisors. Terms of the deal were not disclosed. Babson-United manages $1.2 billion in assets for institutions and high-net-worth individuals. The combined firm will operate under the Boston Advisors name and will manage $3.5 billion. Babson-Uniteds portfolio managers and research staff, including Peter Meenan, president and CEO, will join Boston Advisors. The transaction is expected to close in May.