Using a sample of stocks experiencing large price changes in 40 countries over 20 years, we investigate the association between investors' traits that vary by national culture – overconfidence, conservatism, and risk tolerance – and proposed theoretical explanations for short-term equity...

We derive and test empirically a robust one-factor asset pricing model consistent with the multiple-priors approach of the ambiguity literature. The robust CAPM can explain the cross-section of expected U.S. stock returns without the need for additional risk factors. Further, observed anomalies...

We present evidence that share repurchases reduce investment inefficiencies related to short-term investors. Using U.S. data from 1988 to 2018, we first document that stock buybacks are associated with lower long-term investments. However, contrary to popular perception that buybacks sacrifice...