Shares of PMI Group (PMI -55.1%) crater after the mortgage insurer says it may have to stop...

|By:, SA News Editor

Shares of PMI Group (PMI -55.1%) crater after the mortgage insurer says it may have to stop selling new coverage policies, and a backup plan has "no assurance" of succeeding. Rival firms MGIC Investment (MTG -16.5%), Radian Group (RDN -16.2%) and Genworth (GNW -6.6%) also suffer in deep sympathy.