The nation’s largest public pension fund has filed suit in California state court in connection with $1 billion in losses that it says were caused by “wildly inaccurate” credit ratings from the three leading ratings agencies.
The suit from the California Public Employees Retirement System, or Calpers, a public fund known for its shareholder activism, is the latest sign of renewed scrutiny over the role that credit ratings agencies played in providing positive reports about risky securities issued during the subprime boom that have lost nearly all of their value.
The lawsuit, filed late last week in California Superior Court in San Francisco, is focused on a form of debt called structured investment vehicles, highly complex packages of securities made up of a variety of assets, including subprime mortgages. Calpers bought $1.3 billion of them in 2006; they collapsed in 2007 and 2008.