Estimates of maximum obtainable Sharpe ratios associated with prominent multifactor models are difficult to reconcile with risk-based economic models. We provide evidence that this arises due to optimistic bias driven by a combination of data snooping and publication-induced learning about...

We analyze the characteristics of transactions in a comprehensive set of mergers and acquisitions based on SDC data from 1992 through 2009. We do not impose restrictions found in previous empirical work such as excluding private bidders, small targets or those deals with no target value...

We analyze the characteristics of transactions in a comprehensive set of mergers and acquisitions based on SDC data from 1992 through 2009. We do not impose restrictions found in previous empirical work such as excluding private bidders, small targets or those deals with no target value...

We characterize jump dynamics in stock market returns using a novel series of intraday prices covering over 80 years. Jump dynamics vary substantially over time. Trends in jump activity relate to secular shifts in the nature of news. Unscheduled news often involving major wars drives jump...