Washington State Investment Board, Olympia, will invest up to $200 million in GTCR Fund IX, managed by GTCR Golder Rauner. The board also approved a recommendation to extend its contract with Pathway Capital Management by one year, said Liz Mendizabal, spokeswoman for the $66.9 billion system. The fund's original five-year contract with Pathway, to invest as opportunities are found, was set to expire June 30, but the contract stipulated that it could be extended up to five times for one-year terms. The board also increased its allocation to Pathway by up to $300 million. The system began investing with Pathway in 1996 and has committed $775 million since then.