We develop a novel methodology for studying the causal impact of announcement timing. Our methodology uses firms' earnings announcements and leverages quasi-exogenous variation attributable to the specific day-of-week on which a calendar month begins. We refer to the resulting variation in...

We employ the implied volatility spread (IVS) and the short lending fee as measures of privateinformation conveyed by their respective markets. Using credit rating announcements as aninformational event, we find that both IVS and the short fee have significantly higher predictivepower for...

From 2010--2015, a group of traders illegally accessed earnings information hours before their public release by hacking several major newswire services. We use their informed trading as a natural experiment to investigate how efficiently markets incorporate private information in trades. 15\%...

Various macroeconomic announcements are known to influence asset price volatility. While contemplating the impact of a variety of macro news surprises, we highlight the importance of Treasury auctions – a news event that has ramifications for interest rates across the economy and which are...

This paper examines how the sentiment of firm-specific news affects CDS spreads conditional on the degree of information asymmetry. Using a large set of news releases, we document a strong negative relationship between the sentiment of firm-specific news and CDS spreads. More importantly,...

We propose a tone-based event study to reveal the aggregate abnormal tone dynamics in media articles around earnings announcements. We test whether they convey incremental information that is useful for price discovery for non financial S&P 500 firms. The positive relationship found between the...

Stock prices following earnings announcements have become more efficient. Prices on announcement dates incorporate more quickly earnings surprises, leading to the disappearance of post-announcement price drifts. Evidence suggests that trading frictions commonly associated with market...

Most corporate news occurs in the after-hours market, a very illiquid trading environment. We examine the relationship between liquidity and price discovery around after-hours earnings announcements. Prices reflect earnings surprises through changes in quotes rather than through trades....

This study finds that firm life stage affects investor behavior around earnings announcements. Introduction and decline stage companies exhibit significantly less positive cumulative abnormal returns (CARs) around positive earnings surprises and more negative CARs around negative earnings...

This study examines the effects of dark and lit market fragmentation around both earnings announcements and earnings surprises. I find that both dark and lit market fragmentation increase around earnings announcements. I further test whether dark and lit fragmentation hinders the level of price...