The Ohio Public Employees Retirement System, Columbus, will rebalance its $15 billion international equity portfolio to fund a $300 million to $700 million allocation to international enhanced core equities. Richard Baker, spokesman, said the $64.5 billion fund is searching for one or two managers to handle the enhanced core portfolio. It has not been determined whether the system would reduce the portfolios of any of the fund's existing active international managers - Acadian Asset Management, AllianceBernstein Institutional Investment Management, TT International and Lazard Asset Management. No existing manager would be terminated, Mr. Baker said. The system's portfolio also includes an internally managed passive EAFE fund. The system could select new managers by the end of the year.