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Constructing stock portfolios by sorting on ESG ratings : Does the rating provider matter?
Horn, Matthias; Oehler, Andreas (2025): Constructing stock portfolios by sorting on ESG ratings : Does the rating provider matter?, in: Bamberg: Otto-Friedrich-Universität, S. 1–30.
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Year of publication:
2025
Pages:
Source/Other editions:
International review of financial analysis, Amsterdam [u.a.]: Elsevier, 2024, Jg. 96, Nr. A, 103568, S. 1–30, ISSN: 1057-5219
Year of first publication:
2024
Language:
English
Abstract:
An interesting and well documented observation is that the same company receives heterogeneous ESG ratings from different rating providers. Consequently, an important question is whether sorting stocks on ESG ratings of different rating providers results in portfolios that are similar or substantially different regarding their constituents, performance, and risk. We employ the ratings of five rating providers on stocks listed in North America, Europe, Asia-Pacific (excluding Japan), and Japan for the period from 2014 until the end of 2019 and analyze whether the corresponding quintile stock portfolios actually have similar or different portfolio constituents as well as Sharpe ratios, alphas, and idiosyncratic risk. Our analysis indicates that the portfolios considerably differ regarding their constituents. In contrast, and most importantly, Sharpe ratios, alphas, and idiosyncratic risk of corresponding portfolios are not significantly different.
Keywords: ; ; ; ; ;
ESG rating
Rating dispersion
Portfolio performance
Idiosyncratic risk
Sustainability
Best-in-class
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Type:
Article
Activation date:
May 8, 2025
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https://fis.uni-bamberg.de/handle/uniba/107076