The trust split its domestic large-cap value equity allocation with an additional manager hire last quarter.
The county is looking to hire one or more fixed-income managers to handle $600 million.
The plan will issue an RFP seeking managers to enhance returns within its fixed-income portfolio.
The commitments include a first-time investment for the plan.
The asset class represents a new one for the plan, which is targeting managers to handle between $3 million and $5 million.
The selected firm will manage two fixed-income portfolios valued at roughly $937 million.
The retirement system is looking to make a first-time investment in the asset class.
The RFP will be launched in the second half of next year.
The retirement system is seeking global large-cap infrastructure funds.