Kentucky Deferred Compensation System, Frankfort, rehired Mercer Investment Consulting as investment consultant to the system's $370 million stable-value fund, said Robert Brown, executive director. The selection committee chose Mercer after reviewing proposals to an RFP issued in the first quarter. Mercer's new contract is for three years, with the potential for two individual option years. INVESCO Institutional is the discretionary manager for the $1.1 billion system's stable-value fund. The system comprises two plans which mirror each other and offer 32 investment options each.