This paper develops a model of heterogeneous agents on an options market. On Paris Option Market, negotiators have different beliefs about future-at the volatility of the underlying. We assume in advance two groups; fundamentalists who believe in mean reversion and Chartists that incorporate...

This paper examines trading activity in five index options markets before significant price shocks in the underlying asset (S&P100, FTSE100, CAC40, DAX30, AEX). The results indicate abnormal call and put option trading volume before price shocks for a large number of cases, implying that market...

Behavioral theories contend that the human decision-making process tends to both incorporate anchor points and improperly weight low probability events. In this study, we find evidence that equity option market investors anchor to prices and incorporate a probability weighting function similar...

This study investigates the role of gender in financial risk-taking. Specifically, I ask whether female investors tend to fund less risky investment projects than males. To answer this question, I use real-life investment data collected at the largest German market for peer-to-peer lending....

This study investigates the role of gender in financial risk-taking. Specifically, I ask whether female investors tend to fund less risky investment projects than males. To answer this question, I use real-life investment data collected at the largest German market for peer-to-peer lending....

Existing empirical evidence is inconclusive on whether professional investors show sophisticated behavior or not, a question which is at the heart of market efficiency. This ambiguous evidence is mostly based on trading data or laboratory evidence, which each has its limitations. We complement...