The Western Asset Mortgage Opportunity Fund Inc. (DMO) functions as a closed-end mutual fund, primarily concentrating on fixed-income investments. Its principal management is overseen by Legg Mason Partners Fund Advisor, LLC, with co-management responsibilities shared by Western Asset Management Company and Western Asset Management Company Limited. The fund strategically allocates its capital within the U.S. fixed-income markets, placing a significant emphasis on mortgage-backed securities. Portfolio construction is informed by comprehensive, proprietary research. For performance evaluation, the fund measures itself against the BofA Merrill Lynch U.S. Floating Rate Home Equity Loan Asset Backed Securities Index. This fund was founded in the United States on December 11, 2009, where it remains domiciled.