Tweet-level data from a social media platform reveals low average accuracy and high dispersion in the quality of advice by financial influencers, or “finfluencers”: 28% of finfluencers are skilled, generating 2.6% monthly abnormal returns, 16% are unskilled, and 56% have negative skill...

Many tests of asset pricing models address only the pricing predictions - but these pricing predictions rest on portfolio choice predictions which seem obviously wrong. This paper suggests a new approach to asset pricing and portfolio choices, based on unobserved heterogeneity. This approach...

We analyze a controlled price formation experiment in the laboratory that shows evidence for bubbles. We calibrate two models that demonstrate with high statistical significance that these laboratory bubbles have a tendency to grow faster than exponential due to positive feedback. We show that...

We develop a method that allows one to compute incomplete-market equilibria routinely for Markovian equilibria (when they exist). The main difficulty to be overcome arises from the set of state variables. There are, of course, exogenous state variables driving the economy but, in an incomplete...

In the context of a continuous-time pure-exchange economy model, the paper develops a novel methodology, based on measure-valued stochastic processes, for analyzing the evolution of heterogeneity in a tractable manner and studying its impact on asset prices. The agents in the economy differ with...

We show that financial risk-taking originates in preindustrial ancestral population diversity. We use data on immigrants residing in the United States and show that controlling for all known determinants of portfolio decisions, diversity positively affects stock market participation and asset...

Donald Trump's election and his nomination of Scott Pruitt, a climate skeptic, to lead the Environmental Protection Agency drastically downshifted expectations on US climate-change policy. We study firms' stock-price reactions and institutional investors' portfolio adjustments after these...

Mergers and acquisitions are often motivated by the intention of creating value from intangible assets. We develop a novel word list of intangibles and apply it to takeover announcements. Deals presented with more “intangibles talk” complete more quickly. However, the value of these deals to...

We study the impact of global financial sanctions on the Russian banks and economy. Financial sanctions were consecutively imposed between 2014 and 2019, allowing potentially-targeted (but not yet sanctioned) banks to adjust their international and domestic exposures. Compared to similar other...

Many mergers destroy shareholder value because managers intentionally waste corporate resources to pursue private benefits. Using textual analysis, we link industry conditions as reflected in acquirer peers' 10-K statements to acquirer announcement abnormal returns. We find that more negative...