We examine the stock market returns in an environment in which the dates of the central bank’s information supply through public announcements are not prescheduled. We document that positive excess returns are accumulated as early as 3 days before China’s central bank releases the monthly data of monetary aggregates, which may be announced either early or late in a month. In particular, this pre-announcement premium exists only when an announcement arrives late in an announcement cycle. We provide a theoretical framework in which the degree of information acquisition in the market increases as the date approaches the end of an announcement cycle while investors are still waiting for the arrival of an announcement, a hypothesis that receives strong empirical support. We show that the information acquisition channel highlighted in Ai, Bansal, and Han (2022) explains the uncertainty reduction and the positive risk premium before monetary announcements in China.

ABSTRACT Using the public release of comment letters on EDGAR to capture a regime shift toward regulatory transparency, we examine whether an increase in transparency affects regulators’ effort and work performance. We find that the SEC staff reviews more filings and more documents per filing following the disclosure regime shift. These effects are incrementally stronger for firms with comment letters that are expected to attract greater investor or public monitoring. Furthermore, under the new regime, reviews are more timely. Upon the regime switch, the likelihood of a restatement (receiving a comment letter) decreases (increases) for filings that are reviewed. After receiving a comment letter, a firm with signs of potential fraud is more likely to be investigated, and this effect becomes more pronounced under the new regime. Altogether, our findings suggest that publicly disclosing regulators’ work output can mitigate moral hazard (i.e., increase regulators’ work input), improving their work performance.