The effect of coworkers on the learning and the productivity of an individual is measured combining theory and data. The theory is a frictional equilibrium model of the labor market in which production and the accumulation of human capital of an individual are allowed to depend on the human...

We track firms at birth and compare the growth pattern of IPO firms and their birth-matched counterparts. Firms that are larger at birth with faster initial growth are more likely to attain a larger size later in life and go public. Firms in the top percentile of predicted propensity to go...

We study how risk management through hedging impacts firms and competition among firms in the life insurance industry - an industry with over 7 Trillion in assets and over 1,000 private and public firms. We show that firms that are likely to face costly external finance increase hedging after...

We study the effects of going public using a unique panel of firms in 16 European countries for which we observe financial data before and after firms' initial-public-offering (IPO) attempts. We compare firms that complete their IPO with firms that withdraw their IPO. We instrument the going...

The Cultural Revolution deprived Chinese students of the opportunity to receive higher education for 10 years when colleges and universities were closed from 1966-1976. We examine the human capital cost of this loss of education on subsequent innovation by firms, and ask if it impacted firms...

Using new measures of expanded Internet access in China and internet-based search, we examine how competitive shocks from China impact U.S. innovation through the markets for innovation and existing products. We identify shocks to innovation competition using the geography of Chinese internet...

We examine the impact of outside purchase contracts on firm risk and firm capital structure. We find that firms with more outside purchase contracts have less risky cash flows. Despite these less risky cash flows, firms with these contracts also have less financial leverage especially when they...

We study how firms differ from their competitors using new time-varying measures of product differentiation based on text-based analysis of product descriptions from 50,673 firm 10-K statements filed yearly with the Securities and Exchange Commission. This year-by-year set of product...

We examine how product differentiation influences mergers and acquisitions and the ability of firms to exploit product market synergies. Using novel text-based analysis of firm 10K product descriptions, we find three key results. (1) Firms are more likely to enter restructuring transactions when...

We show that unemployed individuals maintain significant access to credit. Following job loss, the unconstrained borrow, while the constrained default and delever. Both defaulters and borrowers are using credit to smooth consumption. We quantitatively show that long-term credit relationships and...