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Asset correlation and network fragility: How should we intervene?

Presented by: 
T Kobayashi Kobe University
Date: 
Wednesday 3rd September 2014 - 11:00 to 12:00
Venue: 
INI Seminar Room 2
Abstract: 

The question of how to stabilize financial systems has attracted considerable attention since the global financial crisis of 2007-2009. Recently, Beale et al. (2011) demonstrated that higher portfolio diversity among banks would reduce systemic risk by decreasing the risk of simultaneous defaults at the expense of a higher likelihood of individual defaults. In practice, however, a bank default has an externality in that it undermines other banks' balance sheets. In this presentation, I focus on the interplay between the interbank network and asset correlation structure. I argue that regulator's intervention should be designed in a way that takes into account the mesoscopic features of financial markets.

Presentation Material: 
University of Cambridge Research Councils UK
    Clay Mathematics Institute The Leverhulme Trust London Mathematical Society Microsoft Research NM Rothschild and Sons