We study the interrelation between the size and winner-loser effects in U.S. stock re-turns, including their response to extreme returns. We find that size effect and winner-loser effect are present in data up to 2017. These are related but separate effects. How-ever these effects are due to...

Everyday financial decisions are the product of diverse factors, including instinct, habit, emotion, reason, and social interaction. Psychologists have long aspired to unravel the determinants of intuitive judgment and choice. Slowly but surely, they have identified various psychological...

We study the interrelation between the size and winner-loser effects in U.S. stock returns. We use data for the period 1926-2006. The two effects are robust --- also in data gathered after 1980. Small-firm loser portfolios perform particularly well in January but poorly during the 4th quarter of...

In its attempt to model financial markets and the behavior of firms, modern finance theory starts from a set of normatively appealing axioms about individual behavior. Specifically, people are said to be risk-averse expected utility maximizers and unbiased Bayesian forecasters, i.e., agents make...