The California Public Employees' Retirement System announced today that Greg Ruiz will join the pension fund as its new managing investment director for private equity. Ruiz has extensive experience in private equity investing, having worked across multiple sectors including consumer, retail, healthcare, technology, financial services, and education. He comes to CalPERS from Palo Alto-based Altamont Capital Partners, where he serves as a principal. "Greg has a keen understanding of what successful private equity investing demands," said Ben Meng, CalPERS' chief investment officer.