The plan committed up to $150 million across three funds in May and June.
The plan committed to two private debt funds at a board meeting last month.
The $50 million investment concludes a search for an additional long/short strategy initiated late last year.
The retirement system launched the searches last quarter due to contract expirations.
The middle market private investment firm has raised more than $3 billion total for its latest private equity and credit funds.
The plan created a 3% target to multi-asset credit earlier this year.
The retirement system finalized a pair of new manager relationships last week.
The newly hired firm will provide private credit, private equity, real estate and infrastructure consulting services.
The pension plan also made credit and infrastructure commitments totaling $130 million last month.
The plan also terminated an international small-cap equity manager for performance reasons.