Animal Behavior in Capital Markets : Herding Formation Dynamics, Collective Interest, and the Role of a Predator

This paper provides new evidence on herding behavior. We use a five-year period and daily data for 336 listed firms from the US capital market putting under the microscope three important elements of financial herding behavior. First, trading volume, representing market interest, as a significant variable in capital markets apart from stock prices. Second, herding dynamics since herding formation is a dynamic process. Third, the reaction of possible financial herding to exogenous events-threats, as we use the pandemic event in order to investigate a market under stress. Even though the benchmark herding model used does not provide evidence of herding behavior, our results verify the significance of the above herding elements. We also find that trading volume and positive changes in trading volume result in increased cross-sectional absolute deviation (CSAD). Most importantly, we find that herding behavior is evident during the pandemic confirming that investors tend to herd during major crisis periods