Correlation structure and dynamics in volatile markets

Aste, Tomaso and Shaw, W. and Di Matteo, T. (2010) Correlation structure and dynamics in volatile markets. New Journal of Physics, 12 (8). 085009. ISSN 1367-2630. (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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The statistical signatures of the 'credit crunch' financial crisis that unfolded between 2008 and 2009 are investigated by combining tools from statistical physics and network theory. We devise measures for the collective behavior of stock prices based on the construction of topologically constrained graphs from cross-correlation matrices. We test the stability, statistical significance and economic meaningfulness of these graphs. The results show an intriguing trend that highlights a consistently decreasing centrality of the financial sector over the last 10 years.

Item Type: Article
Subjects: Q Science
Q Science > QC Physics
Q Science > QC Physics > QC20 Mathematical Physics
Divisions: Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group
Depositing User: Tomaso Aste
Date Deposited: 20 Mar 2012 16:24
Last Modified: 11 Jun 2014 13:05
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