We test the effects of uncertainty on market liquidity using Hurricane Sandy as a natural experiment. Given the unprecedented strength, scale and nature of the storm, the potential damages of a landfall near the Greater New York area were unpredictable and therefore uncertain. Using a...

The speed of trading is an important factor in modern security markets. We still know relatively little about the e ffect of speed on liquidity and price discovery, two important aspects of market quality. On April 23rd, 2007, Deutsche Boerse made the most important upgrade to their trading...

We find evidence consistent with the notion that the broad non-exclusionary disclosure requirement of Reg-FD inhibits the adoption of new disclosure technologies. Our analyses exploit unanticipated SEC guidance (“Reg-SocMedia”) that outlined how social media channels could be used in...

Using a unique data set with 18.1 million transactions in bank-issued warrants from the European Warrant Exchange, we compute a retail investor sentiment index. We show that retail investors are contrarian, that retail investor sentiment is an important part of the equity pricing process and...

This paper investigates the scarcity effects of quantitative easing (QE) policies, drawing on intra-day transaction-level data for German government bonds, purchased under the Public Sector Purchase Program (PSPP) of the ECB/Eurosystem. This paper is the first to match high-frequency QE purchase...

Predatory trading discourages informed investors from gathering information and trading on it. However, using 11 years of equity trading data, we do not find evidence that informed investors are being discouraged. They have roughly constant volumes and profits through the sample. They are...

This paper investigates the scarcity effects of quantitative easing (QE) policies, drawing on intra-day transaction-level data for German government bonds, purchased under the Public Sector Purchase Program (PSPP) of the ECB/Eurosystem. This paper is the first to match high-frequency QE purchase...