Berlin 2008 – scientific programme

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AKSOE: Arbeitskreis Physik sozio-ökonomischer Systeme

AKSOE 11: Social-, Information-, and Production Networks I

AKSOE 11.1: Talk

Wednesday, February 27, 2008, 13:00–13:30, EW 203

The Backbone of Control in G8 Countries — •James Glattfelder, Stefano Battiston, and Frank Schweitzer — Chair of Systems Design, ETH Zurich, Switzerland

Starting from a network of shareholding relationships of quoted companies in G8 countries, the question of the distribution of control is addressed. The special nature of such complex networks --- the orientation and weights of links --- is taken into account by introducing new statistical measures which allow the identification of shareholders cumulatively controlling a substantial fraction of the market. The backbone of control, this clique of powerholders and their portfolios, is further analyzed using appropriate metrics unveiling distinct characteristics of the nature of the core of the G8 markets.