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In summarizing the findings of their recent study, the authors report findings that suggest that not all socially responsible corporate policies are likely to have the same effect on a company's ownership and value. Using environmental policy as their proxy for CSR activities, the authors classify corporate environmental practices into two categories: (1) actions that reduce the likelihood of harmful outcomes by reducing the corporate exposure to environmental risk; and (2) actions that enhance companies' perceived ‘greenness’ through investments that go beyond both legal requirements and any conceivable risk management rationale. Although both groups of environmental practices are likely to be viewed as socially beneficial, corporate expenditures that reduce a firm's environmental risk exposure are more likely to benefit shareholders by limiting the risk of losses arising from environmental accidents, lawsuits, and fines—and possibly thereby reducing the firm's cost of capital. By contrast, corporate expenditures that enhance the firm's perceived greenness by going beyond legal requirements and risk management rationales could actually reduce shareholder value. Consistent with this hypothesis, the authors find that institutional investors tend to own smaller than average percentages of both companies the authors identify as ‘toxic’ and make limited efforts to manage their environmental risk, and companies they label ‘green’ with low environmental risk exposure but relatively high CSR spending on the environment. At the same time, such investors hold larger‐than‐average positions in ‘neutral’ companies with relatively low, or effectively managed, environmental risk exposures and limited investment in ‘greenness’ programs. The authors also find that both toxic and green companies have lower (Tobin's Q) valuations than neutral companies, and that otherwise toxic companies that effectively manage their environmental risk exposures have higher valuations.