This paper investigates the effect of house money on the risk-taking behavior of individual investors. When gains are more substantial, individuals tend to take greater risk. The house money effect seems to decline over time, because the propensity for risk taking following gains is diminished...

Using a unique data set of complete trade records, we find that large individual investors are successful at picking stocks. Large individual investors' correlated trades not only can move synchronous stock prices but also can positively predict future returns. More importantly, large individual...