Over the last decade, local currency emerging market (EM) debt has been developing to become an attractive and complementary investment category as many EM countries have been successful to reduce currency mismatches and maturity problems by implementing sound fiscal and monetary policies. Analyzing the period from 2002 to July 2009, we show that the local currency EM debt investments provide significant additional alpha and diversification to traditional bond portfolios. In particular, first, EM local currency bond returns are less correlated to the US stock market, treasury and high-yield bond markets, and global risk premia compared to the a case of EM equity and US dollar-denominated bond markets. Second, yields and excess returns on local currency debt depend largely on expected depreciation of the exchange rate against US dollar, while excess returns on dollar-denominated EM debt are for the most part compensation for bearing the global risk. Third, EM sovereign local currency bond returns beat other emerging and mature market asset classes by providing higher risk adjusted excess returns and diversification. In light of our findings, we suggest that the development of local currency bond markets in EM countries could contribute to global financial stability by reducing currency mismatches and reliance on foreign currency debt, which in turn is linked to growth and poverty reduction.