Both are new positions.
Mr. Reynolds, based in Atlanta, was previously with Mercer. Bruce Lee, Mercer spokesman, wrote in an e-mail that Mr. Reynolds left in November and his responsibilities have been assumed by other Mercer employees. He would not provide further information.
Mr. Pietrzak, based in Cleveland, was previously an investment manager at PNC Institutional Investments. PNC spokesman Fred Solomon did not return a phone call seeking further information by press time.