Araujo, Tanya; Louçã, Francisco - ISEG - School of Economics and Management, Department … - 2007
This paper investigates the dynamics of stocks in the S&P500 for the last 33 years, considering the population of all companies present in the index for the whole period. Using a stochastic geometry tech- nique and defining a robust index of the dynamics of the market struc- ture, which is able...