Divestment and Engagement: The Effect of Green Investors on Corporate Carbon Emissions

Matthew Kahn, John Matsusaka and Chong Shu

No 31791, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: This paper investigates whether green investors can influence corporate greenhouse gas emissions through capital markets, and if so, whether the effect is larger from divesting polluters’ stock in order to limit their access to capital, or acquiring polluters’ stock and engaging with management as owners. We focus on public pension funds, classifying them as green or nongreen based on which political party controlled the fund. To isolate the causal effects of green ownership, we use exogenous variation caused by state-level politics that shifted control of the funds, and portfolio rebalancing in response to returns from non-equity investment. Our main finding is that companies reduced their greenhouse gas emissions when stock ownership by green funds increased and did not alter or increased their emissions when ownership by nongreen funds increased. Other evidence based on proxy voting, shareholder proposals, and activist pension funds suggests that ownership mattered because of active engagement by green investors, and through attempts to persuade more than voting pressure. We do not find that companies with green investors were more likely to sell off their high-emission facilities (greenwashing). Overall, our findings suggest that (a) corporate managers respond to the environmental preferences of their investors; (b) divestment of polluting companies may lead to greater emissions; and (c) private markets may be able to partially address environmental challenges independent of government regulation.

JEL-codes: G11 G12 Q54 (search for similar items in EconPapers)
Date: 2023-10
New Economics Papers: this item is included in nep-cfn, nep-ene, nep-env and nep-res
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Working Paper: Divestment and Engagement: The Effect of Green Investors on Corporate Carbon Emissions (2023)
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