We study the effect of algorithmic trading (AT) on market quality between 2001 and 2011 in 42 equity markets around the world. We use exchange co-location service that increases AT as an exogenous instrument to draw causal inferences of AT on market quality. On average, AT improves liquidity and...

We examine a general class of volatility over volume liquidity proxies as computed from low frequency (daily) data. We start from the Kyle and Obizhaeva (2016) hypothesis of transaction cost invariance to identify a new volatility over volume liquidity proxy “VoV(%Spread)” for percent spread...

The COVID-19 pandemic has triggered an unprecedented crisis in the tourism industry. We study the impact of COVID-19 on global Airbnb booking activity regarding three factors: the initial Wuhan lockdown, local COVID-19 cases, and local lockdowns. Using reviews and cancellations as proxies for...

We propose a portfolio holdings-based method for evaluating global equity funds that decomposes excess returns versus benchmark indices into contributions from six equity and three currency ‘style factors', and alpha. The method is used to characterize sources of performance for institutional...

We examine the informativeness of quarterly disclosed portfolio holdings across four institutional investor types: hedge funds, mutual funds, pension funds, and private banking firms. Overweight positions outperform underweight positions only for hedge funds. By decomposing holdings and stock...