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Previous work on real estate portfolio diversification by location began with geographic region diversification and moved to economically defined regions (a combination of economics and geography). This work takes the next step by removing the arbitrary geographic restriction and looking at the local economic drivers of individual metropolitan areas as the key determinant for more efficient diversification. The results show that economic diversification can be a more effective diversification strategy than previously used strategies that have geographic constraints.
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Mueller et al. (1992) studied this question.
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