 PEMBROKE, Bermuda--BUSINESS WIRE--Arch Capital Group Ltd. NASDAQ: ACGL today announced the completion of the previously disclosed acquisition of Westpac Lenders Mortgage Insurance Limited WLMI, an Australian Prudential Regulation Authority APRA authorized captive lenders mortgage insurance LMI provider to the Westpac Group Westpac. With the transaction complete, Arch will proceed with combining the operations of WLMI with its existing Australian LMI company, Arch LMI Pty Ltd. As par 