Risk Characterization of Firms with ESG Attributes Using a Supervised Machine Learning Method

Prodosh Eugene Simlai ()
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Prodosh Eugene Simlai: Nistler College of Business and Public Administration, University of North Dakota, 3025 University Avenue, Grand Forks, ND 58202, USA

JRFM, 2024, vol. 17, issue 5, 1-9

Abstract: We examine the risk–return tradeoff of a portfolio of firms that have tangible environmental, social, and governance (ESG) attributes. We introduce a new type of penalized regression using the Mahalanobis distance-based method and show its usefulness using our sample of ESG firms. Our results show that ESG companies are exposed to financial state variables that capture the changes in investment opportunities. However, we find that there is no economically significant difference between the risk-adjusted returns of various ESG-rating-based portfolios and that the risk associated with a poor ESG rating portfolio is not significantly different than that of a good ESG rating portfolio. Although investors require return compensation for holding ESG stocks, the fact that the risk of a poor ESG rating portfolio is comparable to that of a good ESG rating portfolio suggests risk dimensions that go beyond ESG attributes. We further show that the new covariance-adjusted penalized regression improves the out-of-sample cross-sectional predictions of the ESG portfolio’s expected returns. Overall, our approach is pragmatic and based on the ease of an empirical appeal.

Keywords: greens stocks; large datasets; mahalanobis distance; penalized regressions; risk characterization; prediction (search for similar items in EconPapers)
JEL-codes: C E F2 F3 G (search for similar items in EconPapers)
Date: 2024
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