The real effects of stock prices: learning, disclosure and corporate social responsibility

This paper develops a tractable model to study the impact of corporate social responsibility (CSR) on real decisions (i.e., production and disclosure decisions) of a firm which can learn from the stock price. Firms with high CSR disclose more precise information, improving the stock liquidity and price efficiency, which also benefit liquidity traders and consumers. Interventions by regulators in firms’ disclosure decisions, such as mandatory disclosure, can improve social welfare, but their effectiveness depends on the degree of CSR. We also discuss the implications of learning from the price.