Massachusetts Housing Finance Agency Retirement System, Boston, is searching for an active domestic small-cap equity manager to run $3 million to $5 million in a core-to-value portfolio, said John Doherty, executive secretary. Officials of the $50 million fund will accept proposals for either a commingled strategy or a separate account. Funding will come from terminating a State Street Global Advisors Russell 3000 index fund; Mr. Doherty said plan officials think this portfolio will benefit from active management. Fund officials will select two or three finalists to make presentations in May. Meketa Investment Group is assisting.