Measuring the under-diversification of socially responsible investments

Fabio Pizzutilo

Applied Economics Letters, 2017, vol. 24, issue 14, 1005-1018

Abstract: This article proposes a straightforward measure of the residual unsystematic risk that a selective portfolio investment strategy, such as socially responsible investment, eventually bears. The model is empirically employed in order to analyse whether the MSCI socially responsible indices bear significant levels of volatility that could be diversified by not imposing social screenings to the set of eligible investments. The study finds that a low but not negligible part of the volatility of the returns could be diversified by not restricting the investment to socially responsible companies. Implications for the socially responsible investing industry and socially responsible investors are discussed.

Date: 2017
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DOI: 10.1080/13504851.2016.1248279

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