We study the role of firm ambiguity on stock price reaction to earnings announcements. By using the firm's variance risk premium (VRP) prior to earnings news arrivals as a proxy for firm-level information ambiguity, we provide evidence that this “micro” form of ambiguity has a significant...

We develop a measure of how information events impact investors' perceptions of risk that is broadly applicable and simple to implement. We derive this measure from an option-pricing model where investors anticipate an announcement that simultaneously conveys information on the announcer's...

Can an earnings announcement decrease disagreement about fundamentals while simultaneously increasing disagreement about price? Recent theory suggests the presence of short-horizon investors can lead to a polarization of higher-order beliefs about price (i.e., beliefs regarding the opinions of...

Prior studies show that investor learning about earnings-based return predictors from academic research erodes return predictability. However, the signaling power of “bottom-line” earnings has declined over time, which complicates assessments of investor learning about profitability signals...

We investigate whether mandatory earnings announcement date forecasts are informative to investors and the informational tradeoffs between mandatory and voluntary forecasts. We find: (i) The percentages of the quarter's earnings news conveyed by mandatory China and voluntary US forecasts are...

Post-earnings announcement drift is stronger in firms that release earnings on days when market returns are higher in magnitude. This drift remains robust after controlling for previously documented factors such as Friday releases, the number of simultaneous releases, and price delay measure....

Do insiders trade on private information about earnings? We address this question exploiting the discontinuity in the term structure of option prices around the announcement date, to obtain a daily and forward-looking measure of the informativeness of the next earnings announcement. This measure...

Management frequently attributes earnings news to various economic events. Using textual analysis, we identify the economic factors underlying earnings news from press releases. We document a wide range of industry-wide shocks and firm-specific actions to which the earnings news in management...

We study information production and diffusion resulting from dynamic interactions between different types of informed investors in financial markets. Using a theoretical framework that exploits the setting of the Q&A section of earnings conference calls, we predict that information production...