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Controlling Externalities: Ownership Structure And Cross-Firm Externalities, Dhammika Dharmapala, Vikramaditya S. Khanna

Law & Economics Working Papers

In recent years, debates over the social purpose of corporations have taken center stage amidst rising concern about externalities (such as those associated with climate change and harmful speech) generated by firms. A key motivation is the claim that government regulation and liability regimes appear not to be functioning sufficiently well to force firms to internalize these externalities. There is thus rising interest in exploring alternative mechanisms. In particular, a rapidly growing body of scholarship argues that index funds increasingly approximate diversified “universal owners” with incentives to maximize portfolio value (and thus to internalize cross-firm externalities). However, much of this …