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NBER Working Papers and Publications
|November 2001||Long-Term Global Market Correlations|
with William N. Goetzmann, K. Geert Rouwenhorst: w8612
In this paper we examine the correlation structure of the major world equity markets over 150 years. We find that correlations vary considerably through time and are highest during periods of economic and financial integration such as the late 19th and 20th centuries. Our analysis suggests that the diversification benefits to global investing are not constant, and that they are currently low compared to the rest of capital market history. We decompose the diversification benefits into two parts: a component that is due to variation in the average correlation across markets, and a component that is due to the variation in the investment opportunity set. There are periods, like the last two decades, in which the opportunity set expands dramatically, and the benefits to diversification are dr...
Published: William N. Goetzmann & Lingfeng Li & K. Geert Rouwenhorst, 2005. "Long-Term Global Market Correlations," Journal of Business, University of Chicago Press, vol. 78(1), pages 1-38, January. citation courtesy of