Perhaps this is because investors are not the perfectly informed paragons found in efficient-market theory.

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Something similar, though perhaps not as dramatic, would happen if the coverage mandate is found unconstitutional but the rest of the law stands.

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Sinclair observes that through this process, Barrick has forged new relationships within the community, found renewed trust among local stakeholders, and perhaps not surprisingly, feels more confident about the state of its social license to operate as a result.

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