Liberty Mutual Holding Co., the second-largest U.S. property-casualty insurer, posted its worst loss in at least a decade.

Only slight deviations were found in a fraction of the 800,000 cars involved in the CO2 investigation.

Greenlight Capital Re Ltd., the reinsurer whose chairman is hedge-fund manager David Einhorn, erased gains from its 2007 initial public offering price after losses from investments and underwriting.

Consumer awareness has become one of the biggest drivers of E&O claims.