In this paper we studied the Shareholding Network (SN) embedded in the Italian Stock Market (MIB). We identified the central companies both in the role of transferring information flows and controlling companies. To this end we used betweenness and flow betweenness centrality measures, together with in and out degree. We tested the scale-free property on in and out degree, betweenness and flow betweenness centrality. The effect of external shocks to SN and the different extent on which companies react to them are measured relating asset volatility and betweenness.
D'Errico, M., Grassi, R., Stefani, S., Torriero, A. (2009). Shareholding networks and centrality: An application to the Italian financial market. In A. Naimzada, S. Stefani, A. Torriero (a cura di), Networks, Topology and Dynamics. Theory and Applications to Economics and Social Systems (pp. 215-228). Heidelberg : Springer.
Shareholding networks and centrality: An application to the Italian financial market
GRASSI, ROSANNA;STEFANI, SILVANA;
2009
Abstract
In this paper we studied the Shareholding Network (SN) embedded in the Italian Stock Market (MIB). We identified the central companies both in the role of transferring information flows and controlling companies. To this end we used betweenness and flow betweenness centrality measures, together with in and out degree. We tested the scale-free property on in and out degree, betweenness and flow betweenness centrality. The effect of external shocks to SN and the different extent on which companies react to them are measured relating asset volatility and betweenness.
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