Stock market reaction to mandatory sustainability reporting: Does carbon‐intensity and environmental, social, and governance reputation matter?

Abstract

Abstract With a sample of 679 listed firms, integrating the event study method and cross‐sectional analysis, we examine the stock market reaction to mandatory sustainability reporting regulation in India. We find that (1) on average, investors react positively to such announcements; (2) the impact varies across different sectors; (3) affected and unaffected firms do not posit significant differences; (4) carbon‐intensive firms are positively impacted; and (5) high environmental, social, and governance (ESG) performance is negatively associated with the event‐induced cumulative abnormal returns (CAR). One standard deviation change in ESG leads to −0.77%, −0.45%, and −0.61% significant changes in [+1,+5], [−5,+5], and [−7,+7] CAR, respectively. The findings align with the value relevance idea and the reputational risk theory but contradict the reservoir of goodwill hypothesis.

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