Shareholding networks and centrality: An application to the Italian financial market. (English) Zbl 1154.91590
Naimzada, Ahmad K. (ed.) et al., Networks, topology and dynamics. Theory and applications to economics and social systems. Papers based on the presentations at the NET 2006, Verbania, Italy and Net 2007, Urbino, Italy. Berlin: Springer (ISBN 978-3-540-68407-7/hbk; 978-3-540-68409-1/ebook). Lecture Notes in Economics and Mathematical Systems 613, 215-228 (2009).
Summary: We study the Shareholding Network (SN) embedded in the Italian Stock Market (MIB). We identify the central companies both in the role of transferring information flows and controlling companies. To this end we use betweenness and flow betweenness centrality measures, together with in and out degree. We test 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.
For the entire collection see [Zbl 1155.91009].
For the entire collection see [Zbl 1155.91009].
MSC:
| 91B74 | Economic models of real-world systems (e.g., electricity markets, etc.) |
| 91B28 | Finance etc. (MSC2000) |
| 05C90 | Applications of graph theory |
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