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Long-Term Global Market Correlations

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  • William N.Goetzmann
  • Lingfeng Li
  • K.Geert Rouwenhorst

Abstract

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 driven primarily by the existence of marginal markets. For other periods, such as the two decades following World War II, risk reduction is due to low correlations among the major national markets. From this, we infer that periods of globalization have both benefits and drawbacks for international investors. They expand the opportunity set, but diversification relies increasingly on investment in emerging markets.

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Bibliographic Info

Paper provided by Netherlands Central Bank in its series DNB Staff Reports (discontinued) with number 98.

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Length: 60 pages
Date of creation: 2003
Date of revision:
Handle: RePEc:dnb:staffs:98

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