This paper examines whether political events create, or resolve uncertainty in financial markets. In the few days following the surprise outcomes of the Brexit referendum and the 2016 U.S. presidential election, bid-ask spreads increase, quoted depth decreases, and volatility increases. We fail...

This study investigates the impact of COVID-19 pandemic on the microstructure of US equity markets. In particular, we explain the liquidity and volatility dynamics via indexes that capture multiple dimensions of the pandemic. Our results suggest that increases in confirmed cases and deaths due...

We evaluate the information structure of US markets after the implementation of the SEC tick pilot program. We find significant changes in the information structure of the market conditioned on the market fee structure. Maker-taker market volume flow increases in informational efficiency while...

We examine the effects of an order cancellation fee on limit order flow and execution quality in the PHLX options market. The cancellation fee on professional order flow is effective in reducing the rate at which limit orders are canceled. While the cancellation fee discourages the submission of...