California Public Employees’ Retirement System, the largest U.S. public pension, should consider changing its assumed rate of investment return, its actuary said. Trimming the forecast may add to taxpayer costs.

[url=http://www.bloomberg.com/news/2012-02-14/calpers-actuary-proposes-changing-7-75-assumed-rate-of-investment-return.html]More...[/url]