Illinois Municipal Retirement Fund, Oak Brook, plans to conduct an asset/liability study between April and June, followed by an asset allocation study, said Louis W. Kosiba., executive diEnnis Knupphe $24.2 billion fund. Ennis Knupp, the funds investment consultant, will do the asset/liability study with Gabriel Roeder Smith, the fundEnnis Knuppl consultant, he said. Ennis Knupp will also do the asset allocation study, which Mr. Kosiba said could be completed in the third quarter when recommendations would be presented to the fundÂs board. He said itÂs too early to consider any new asset classes in the allocation study, he said. The last asset/liability study was in 2005, Mr. Kosiba said. The fundÂs current allocation is 39.3% domestic equity, 34.8% fixed income, 18.7% international equity, 3.9% alternatives, 2.7% real estate and 0.6% cash.