%0 Journal Article
%@ 1539-3755
%A Bonanno, Giovanni
%A Caldarelli, Guido
%A Lillo, Fabrizio
%A Mantegna, Rosario Nunzio
%D 2003
%F eprints:1134
%I American Physical Society
%J Physical Review E
%K PACS: 89.75.Fb, 89.75.Hc, 89.65.Gh  
%N 4
%T Topology of correlation-based minimal spanning trees in real and model markets
%U http://eprints.imtlucca.it/1134/
%V 68
%X We compare the topological properties of the minimal spanning tree obtained from a large group of stocks traded at the New York Stock Exchange during a 12-year trading period with the one obtained from surrogated data simulated by using simple market models. We find that the empirical tree has features of a complex network that cannot be reproduced, even as a first approximation, by a random market model and by the widespread one-factor model.