The deferred compensation plan replaced its domestic small-cap growth and international large-cap value equity managers last month.
The fund anticipates awarding five contracts in the search.
The retirement system approved issuing the RFPs last month due to standard state procurement laws.
The retirement plan will seek board approval to add two domestic equity managers on watch next week.
The plan first hired the firm in 2018.
The plan is seeking a fund-of-one structure to manage an initial 3% of its long-term 7% target to the asset class.
The fund had previously received a recommendation from its investment consultant to seek a domestic small-cap value manager.
The retirement plan concluded its U.S. small-cap value equity manager search after interviewing two finalists.
The $50 million investment concludes a search for an additional long/short strategy initiated late last year.
The retirement system also hired new domestic small- to mid-cap equity managers in June.