Houston Municipal Employees Pension System committed up to $25 million to ONCAP IV, said spokesman Peter Koops in an e-mail.
The middle-market buyout fund managed by Onex Corp. targets small and midsize North American companies.
As of Sept. 30, 2015, the $2.3 billion pension fund had an 18.4% allocation to private equity, according to Pensions & Investments’ data, the most recent available.