This paper builds a model of high-frequency equity returns by separately modeling the dynamics of trade-time returns and trade arrivals. Our main contributions are threefold. First, we characterize the distributional behavior of high-frequency asset returns both in ordinary clock time and in...

We establish the importance of relative minimum price increments for price discovery in the context of a single asset trading at diverse venues. Our model relates relative spreads to directed information flows and begets a set of testable implications. Although conventional wisdom dictates that...

We measure the individual and collective viewpoints of US Congress members on various economic policies by scraping their Twitter accounts. Tweets that criticize (support) a particular company are associated with a significant negative (positive) stock price reaction in a narrow time window...

We examine the asset pricing implications of a production economy whose long-term growth prospects are endogenously determined by innovation and R&D. In equilibrium, Rh&D endogenously drives a small, persistent component in productivity which generates long-run uncertainty about economic growth....

At low frequencies, we document that size and value premia exhibit strong positive co-movement, but are both negatively related to the equity premium. These patterns are explained in an investment-based asset pricing model featuring persistent micro and macro uncertainty. Micro uncertainty...

We measure the individual and collective viewpoints of US Congress members on various economic policies by scraping their Twitter accounts. Tweets that criticize (support) a particular company are associated with a significant negative (positive) stock price reaction in a narrow time window...