School Employees Retirement System of Ohio, Columbus, hired Aronson + Partners to manage a $100 million large-cap value portfolio. Aronson, which replaced Brandywine, was a "better fit in the portfolio, said Doug Sisson, director-investments for the $8 billion system. Representatives from Brandywine didnt return calls for comment by press time. Trustees will select a target asset allocation at the boards July 29 and 30 meetings. Consultant Frank Russell gave trustees three options: lowering the overall equity allocation; slightly increasing the equity allocation; and sticking with the current mix. Mr. Sisson said trustees seem to be leaning toward an increase. The current mix is 61% international and domestic equities and venture capital, 28% domestic bonds, 10% real estate and 1% cash.