Stock market anomalies representing the predictability of cross-sectional stock returns are one of most controversial topics in financial economic research. This chapter reviews several well-documented and pervasive anomalies in the literature, including investment-related anomalies, value...

Asset allocation models have evolved in complexity with the development of modern portfolio theory, but they continue to operate under the assumption of investor rationality and other assumptions that do not hold in the real world. For this reason, academics and industry professionals make...

This chapter examines the phenomenon of frequent stock trading. Specifically, it covers the ample research demonstrating the negative effects of frequent trading on investor returns, as well as several possible underlying causes for this irrational behavior. Possible causes of frequent trading...

The portfolio separating distribution is sufficient and necessary for a preference-free optimal choice only if the solution is assumed to be constant a priori. The portfolio separating condition is generalized. The new distribution class allowing for correlation uncertainty is defined as...

“Investor Behavior: An Overview” is the introduction chapter for the book Investor Behavior: The Psychology of Financial Planning and Investing edited by H. Kent Baker and Victor Ricciardi that presents a historical perspective of investor psychology and theory. The field of investor...

Both stochastic dominance and Omega ratio can be used to examine whether market is efficient, whether there is any arbitrage opportunity in the market, and whether there is any anomaly in the market. In this paper, we first study relationship between stochastic dominance and Omega ratio. We find...

The main purpose of this study is to empirically examine the relationship between uncertainty and idiosyncratic volatility of Nikkei 225 stocks. We conclude that there is a positive relationship between economic policy uncertainty and idiosyncratic volatility. Employing additional uncertainty...

This note is based on a recent confidence index introduced in the context of compensating probability factors for deviations of subjective probability measures from equivalent martingale measures. The index is adjusted for loss gain probability spreads, and it explains momentum in confidence. We...

This paper sets up an experimental asset market in the laboratory to investigate the effects of ambiguity on price formation and trading behavior in financial markets. The obtained trading data is used to analyze the effect of ambiguity on various market outcomes (the price level, volatility,...