ESG Attribution Framework Using Risk-Parity Approach

This paper presents a technical report detailing a framework for assessing the impact of active ESG investment strategies that integrate ESG analysis or asset owner constraints. The framework contrasts with passive approaches that depend on external ESG indices. It emphasizes the need for tailored risk-return evaluations in active strategies, particularly through a risk-parity approach that redistributes excluded assets to maintain balanced risk contributions across the portfolio. The report outlines three key benefits of this method: equal incremental risk contribution, preservation of the benchmark’s risk structure, and isolation of ESG effects. The framework is applicable to any active management mandate that excludes specific sectors or asset classes. The paper further discusses the implications of implementing such a framework, including the necessity for robust data management and the potential challenges faced by asset managers in aligning their strategies with custom ESG criteria. It concludes by illustrating the methodology and its application in constructing an ESG strategy index.