Amihud's (2002) stock (il)liquidity measure averages daily ratios of absolute close-to-close return to dollar volume, including overnight returns, while trading volumes come from regular hours. Our modified measure addresses this mismatch by using open-to-close returns. It is more strongly...

We document new intraday trading patterns indicative of the key roles of endogenous trading responses of investors to variations in imperfectly-competitive liquidity provision. When measured in trade times of fixed dollar values, price impacts and volatility fall sharply from open to close, and...

We identify Industry-Neutral Self-Financed Informed Trading (INSFIT) by long only fund managers who possess a positive short-lived private signal and self finance informed stock purchases by selling an equivalent dollar amount of stock in the same industry. INSFIT, which constitutes less than 1%...

We show that wholesalers internalize unbalanced amounts of retail order flow to provide liquidity to institutional investors. The Tick Size Pilot highlights how wholesaler incentives affect the magnitude and composition of internalized retail trade imbalances (Mroib, Boehmer et al.\ 2021). Large...

We develop measures of stock-specific trading activity based on durations of sequences of consecutive trades with fixed cumulative values. Trade sizes and signed-trade imbalances rise with activity, while price impacts generally fall, but not always, due to endogenous variation in liquidity...