We provide causal evidence of the effects of patent scope and review times on startups and externalities on their rivals. We leverage the quasi-random assignment of patent applications to examiners and unique data on all first-time applications filed at the U.S. Patent and Trademark Office since...

We provide plausibly identified evidence for the role of investor disagreement in asset pricing. Our natural experiment exploits the staggered implementation of EDGAR, which induces a reduction in investor disagreement with no accompanying changes in company fundamentals, disclosure quality, or...

Using 113 staggered changes in corporate income tax rates across U.S. states, we provide evidence on how taxes affect corporate risk-taking decisions. Higher taxes reduce expected profits more for risky projects than for safe ones, as the government shares in a firm's upside but not in its...

We evaluate differences in investment behavior between stock market listed and privately held firms in the U.S. using a rich new data source on private firms. Listed firms invest less and are less responsive to changes in investment opportunities compared to observably similar, matched private...

We provide evidence on the value of patents to startups by leveraging the quasi-random assignment of applications to examiners with different propensities to grant patents. Using unique data on all first-time applications filed at the U.S. Patent Office since 2001, we find that startups that win...

We structurally estimate a set of firm- and time-varying measures of the magnitude of external financial constraints. By considering the entire capital structure—equity and debt of various maturities—we identify on which external financing margin(s) a firm is constrained at a given point in...

We combine novel micro data with quasi-random timing of patent decisions over the business cycle to estimate the effects of the Great Recession on innovative startups. After purging ubiquitous selection biases and sorting effects, we find that recession startups experience better long-term...

We show that private firms that go public in the U.S. create positive information externalities for their already-listed peers: their IPO filings improve their peers’ trading liquidity directly, by reducing information asymmetry, and indirectly, by crowding in both voluntary disclosure and...

We study the efficiency of capital allocations at state-controlled and privately owned business groups in China. Using highly granular data on within-group capital transfers, we document stark differences: while private groups allocate more capital to units with better investment opportunities,...

Do corporate tax increases destroy jobs? And do corporate tax cuts boost employment? Answering these questions has proved empirically challenging. We propose an identification strategy that exploits variation in corporate income tax rates across U.S. states. Comparing contiguous counties...