Some Pitfalls in Global Investing

Since the 1990s, a large part of world savings have gone to institutional investors that manage those funds by investing around the world. Given this accumulation of resources in professional and sophisticated asset managers, one might expect to see significant international diversification accompanying this process. Yet, to date, little evidence exists on how institutional investors allocate their portfolios globally, and what effect their investment practices have on investors, firms, and policymakers.

In a new paper and VoxEU column, we argue that global funds (those that invest anywhere in the world) are not very well diversified, hold a very limited number of stocks (around 100), and seem to leave behind significant unexploited gains from international diversification. Thus, global funds might not constitute the optimal portfolio for individual investors. Moreover, there are significant challenges to the prospects for broad international diversification. To the extent that global funds continue expanding relative to the more specialized funds (those that invest in specific asset classes and regions), the forgone diversification gains could be significant, and the cost to investors, firms, and countries might be large as well, posing significant challenges to policymakers.

Read the VoxEU piece by Tatiana Didier, Roberto Rigobon, and myself here. Also see the NBER Working Paper 16629, the World Bank Policy Research Working Paper 5524, or the forthcoming paper at the Review of Economics and Statistics.

Source: http://blogs.worldbank.org/developmenttalk/node/828

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