This financial product is designed to track the returns of the Market Vectors Global Mortgage REITs Index. This underlying index measures the aggregate performance of publicly listed mortgage Real Estate Investment Trusts (REITs) that generate at least 50% of their revenue from activities related to mortgages. These instruments are senior unsecured debt obligations, issued by UBS AG. Investors in these securities receive two times (2x) magnified long exposure to the index's performance, compounded monthly, after the deduction of any accrued fees.