We present evidence of investors underreacting to the absence of events in financial markets. Routine-based insiders strategically choose to be silent when they possess private information not yet reflected in stock prices. Consistent with our hypothesis, insider silence following a routine sell (buy) predicts positive (negative) future returns, as well as fundamentals. The return predictability of insider silence is stronger among firms with a poor information environment and facing higher arbitrage costs, and a large fraction of abnormal returns concentrates on future earnings announcements. A long–short strategy that exploits insiders’ strategic silence behavior generates abnormal returns of 6% to 10% annually.

This article examines the pricing of a firm’s carbon risk in the corporate bond market. Contrary to the “carbon risk premium” hypothesis, bonds of more carbon-intensive firms earn significantly lower returns. This effect cannot be explained by a comprehensive list of bond characteristics and exposure to known risk factors. Investigating sources of the low carbon alpha, we find the underperformance of bonds issued by carbon-intensive firms cannot be fully explained by divestment from institutional investors. Instead, our evidence is most consistent with investor underreaction to the predictability of carbon intensity for firm cash-flow news, creditworthiness, and environmental incidents.