Bolton Investment currently provides investment consulting services for the plans.
The fund was oversubscribed and raised in less than six months.
The city is conducting the search on behalf of its $17.8 million deferred compensation plans.
The city is seeking plan administrators for its $11.1 million 457 and $2.7 million 401(a) plans.
The pension plan was notified of two commitments totaling $975 million last week.
The plan’s current advisor will see its contract expire on Sept. 30.
The current TPA contract is set to expire on June 30.
The firm will assist the plan with its upcoming executive director recruitment process.
The retirement system selected the firm following finalist presentations held at a board meeting last week.
The plan has rehired its incumbent after issuing an RFP in January.