In addition to disclosure regulation, the Securities and Exchange Commission (SEC) periodically intervenes in the market making process to facilitate fair, orderly, and efficient capital markets. For example, responding to calls for increased market maker competition on the Nasdaq in the early...

Inadequate sleep is a public health epidemic in the U.S., and poor sleep habits are especially common among professional investors. Neuroscience research finds that sleep disruption inhibits information processing by impairing higher-order cognitive functions. Using Daylight Saving Time (DST)...

The vast majority of U.S. public firms announce earnings in the post-close (between the closing bell and midnight, or PC) or the pre-open (between midnight and the opening bell, or PO). Prior literature generally treats PC and PO announcements as equivalent when measuring the market reaction to...

This study generates out-of-sample predictions from training data to construct investment portfolios that are mean-variance optimized and rebalanced daily to assess gains from incorporating signals based on post-earnings announcement drift (PEAD), the earnings announcement premium (EAP), and...

Prior to investing in a firm, fund managers must evaluate it. This tilts funds’ future portfolio positions toward former portfolio investments, as the past awareness of the firm decreases the cost of evaluating it in the future. We find that firms with many former investors experience...