Cambridge (Mass.) Contributory Retirement System is searching for a manager to run $45 million in active domestic large-cap value equities. RFPs are available from Kevin Leonard at consultant Segal Advisors. Proposals are due by 3 p.m. EDT April 5. Freedom Capital ran the portfolio, said Anne Leduc, spokeswoman for the $411 million retirement system. She said it was "time for a change in the asset class, but that Freedom still manages $36 million in fixed income for the fund.