We estimate a generic agent-based model in which agents have heterogeneous beliefs about the future price to see to what extent behaviour differs across assets, and what this implies for market stability. We find evidence for behavioural heterogeneity for all asset classes, except for equities....

We study intentional herding in investment styles by mutual funds, and its consequences. We find that style herding is significant and persistent, especially for active funds. Herding tends to increase after periods of high market volatility and decrease with sentiment, consistent with the...

This paper documents a strong violation of the law of one price surrounding a large rights issue. If prices are right, the relation between the prices of shares and rights follows the outcome of a simple calculation. In the case of Royal Imtech N.V. in 2014, prices deviated sharply and...

We study intentional herding in investment styles by mutual funds, and its consequences. We find that style herding is significant and persistent, especially for active funds. Herding tends to increase after periods of high market volatility and decrease with sentiment, consistent with the...

We find that periods of elevated EPU are associated with higher analyst disagreement, a decrease in forecast accuracy, and a higher degree of conservatism. We show that the decrease in forecast accuracy can be partially attributed to limited attention. A higher level of EPU attracts analysts’...

In this paper, we study the effect of gamma positioning of dynamic hedgers on market quality through simulations. We find that increases in the net gamma positioning of dynamic hedgers reduces volatility and increases market stability, whereas a negative gamma positioning increases volatility...

In this paper, we study the effect of gamma positioning of dynamic hedgers on market quality through simulations. We find that increases in the net gamma positioning of dynamic hedgers reduces volatility and increases market stability, whereas a negative gamma positioning increases volatility...

We develop an Artificial Stock Market - an agent-based simulation model of the stock market with many risky assets. The ASM has three layers of heterogeneous and interacting agents, and generates prices for 150 stocks. We present the current state of the model and demonstrate its ability to...

In this paper, we study the effect of gamma positioning of dynamic hedgers on market quality through simulations. We find that increases in the net gamma positioning of dynamic hedgers reduces volatility and increases market stability, whereas a negative gamma positioning increases volatility...