Pricing technology that allows firms to rapidly adjust prices has two potential benefits. Prices can respond more rapidly to demand shocks, leading to higher revenues. On the other hand, time-varying prices can be used to smooth out demand across periods, reducing costs in markets with capacity...

We use restaurant food delivery sales tick data to investigate how prices reflect demand, allocate resources and impact profitability. We find that real-time demand can be used to accurately predict future demand over a short time frame, and that dynamic prices based on it reduce demand...

An investment portfolio's return variance is the sum of variance generated by passive systematic risk factor exposure, active security selection and active systematic risk factor timing. We show that the components of active risk can be estimated without knowledge of portfolio holdings. In a...

This paper investigates the relation between shareholders' portfolio concentration and firm performance. Using data on more than 1.3 million unique shareholders, we create an index that measures how concentrated shareholder portfolios are in each firm. We posit that portfolio concentration will...

We develop a new method for detecting portfolio manager activity. Our method relies exclusively on portfolio returns and, consequently, avoids the pitfalls associated with disclosed portfolio holdings. We investigate the interrelation between activity and performance of actively managed U.S....

A vast literature documents negative skewness in stock index return distributions on several markets. We approach the issue of negative skewness from a different angle than in previous studies by combining the Trueman (1997) model of management disclosure practices with symmetric market...

We develop a new method for detecting portfolio manager activity. Our method relies exclusively on portfolio returns and, consequently, avoids the pitfalls associated with disclosed portfolio holdings. We investigate the link between activity and performance of actively managed U.S. equity funds...