FINNOV

We introduce an order driver market model with heterogeneous traders that imitate each other on a dynamic network structure. The communication structure evolves endogenously via a fitness mechanism based on agents performance. We assess under which assumptions imitation, among noise traders, can give rise to the emergence of gurus and their rise and fall in popularity over time. We study the wealth distribution of gurus, followers and non followers and show that traders have an incentive to imitate and a desire to be imitated since herding turns out to be profitable. The model is then used to study the effect that dierent competitive strategies (i.e chartist & fundamentalist) have on agents performance. Our findings show that positive intelligence agents can not invade a market populated by noise traders when herding is high.

Keywords: dynamic network, herding, guru, order driver market