Urban China's high levels of ambient air pollution both lowers quality of life and raises mortality risk. China's wealthy have the purchasing power to purchase private products such as portable room air filters that allows them to offset some of the pollution exposure risk. Using a unique data...

China's rapid economic growth has been fueled by industrialization and urbanization. Given its export focus, this industrialization was spatially concentrated in the coastal eastern cities. Over the last decade, a spatial transformation has taken place leading to a deindustrialization of the...

This paper studies how demand for labor reacts to financial technology (fintech) shocks based on comprehensive databases of fintech patents and firm job postings in the U.S. during the past decade. We first develop a measure of fintech exposure at the occupation level by intersecting the textual...

This paper analyzes how corporate disclosure has been reshaped by machine processors, employed by algorithmic traders, robot investment advisors, and quantitative analysts. Our findings indicate that increasing machine and AI readership, proxied by machine downloads, motivates firms to prepare...

Using a survey of AFA members, we analyze how demographics, time allocation, production mechanisms, and institutional factors affect research production during the pandemic. Consistent with the literature, research productivity falls more for women and faculty with young children. Independently...

This paper studies the long-term effect of hedge fund activism on the productivity of target firms using plant-level information from the U.S. Census Bureau. A typical target firm improves its production efficiency in the three years after an activist intervention, and the improvements are most...

An AI analyst we build to digest corporate financial information, qualitative disclosure and macroeconomic indicators is able to beat the majority of human analysts in stock price forecasts and generate excess returns compared to following human analyst. In the contest of "man vs machine," the...

This study investigates how occupational AI exposure impacts employment at the intensive margin, i.e., the length of workdays and the allocation of time between work and leisure. Drawing on individual-level time diary data from 2004-2023, we find that higher AI exposure--whether stemming from...

China's industrial policies ("Five-Year Plans") displace U.S. production/employment and heighten plant closures in the same industries as those targeted by the policies in China. The impact was not anticipated by the stock market, but U.S. companies in the "treated industries" suffer a valuation...

Lucas and Stokey (1983) motivated future governments to confirm an optimal tax plan by rescheduling government debt appropriately. Debortoli et al. (2021) showed that sometimes that does not work. We show how a Ramsey plan can always be implemented by adding instantaneous debt to Lucas and...