Town of Plymouth (Mass.) Contributory Retirement System is searching for an active large-cap core equity manager to run $15 million. The RFP is available from Carol Tam, a Segal Advisors financial analyst, at [email protected]; proposals are due Oct. 6. The search was prompted by performance concerns about the existing large-cap equity manager, according to Debra Sullivan, director of retirement for the $85 million plan; she would not identify the firm. A selection is expected early next year.