NEW YORK--(BUSINESS WIRE)--Western Asset Mortgage Defined Opportunity Fund Inc. (NYSE: DMO) today announced the financial position of the Fund as of March 31, 2015.           Current Q Previous Q Prior Yr Q March 31, 2015 December 31, 2014 March 31, 2014 Total Assets (a) $ 380,992,340 $ 407,855,309 $ 392,027,405 Total Net Assets (a) $ 259,420,425 $ 257,621,190 $ 257,210,958 NAV Per Share of Common Stock (b) $ 24.91 $ 24.75 $ 24.71 Market Price Per Share $ 24.02 $ 23.84 $ 23.09 Premium / (Discou