Loren M. Balsam was named a managing director at real estate investment firm Perseus Realty Partners, confirmed Jill Adams, marketing and investor relations. The position is new. He was senior investment officer in the value-added unit at Fidelity Real Estate Group, a division of Pyramis Global Advisors. Mr. Balsam left Fidelity on March 31 and has not been replaced, said Alexi Maravel, a Pyramis spokesman. Mr. Balsams duties have been assumed by other executives.