Industry rival Radian Group Inc (NYSE: RDN ) has been able to boost its underwriting volumes lately in light of the recovery in housing, and with prices moving upward, risks of having to pay out on newly written insurance are declining for both Radian Group Inc (NYSE:RDN) and MBIA Inc. (NYSE:MBI). But most of MBIA's attention has focused squarely on its lawsuit with Bank of America Corp (NYSE: BAC ). In early March, a New York judge rejected banks' arguments that MBIA's 2009 restructuring to separate its municipal-bond and mortgage-backed securities divisions amounted to a wrongful asset transfer.