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The Spread of the Credit Crisis: View from a Stock Correlation Network

Smith, Reginald (2008): The Spread of the Credit Crisis: View from a Stock Correlation Network. Forthcoming in: Journal of the Korean Physical Society , Vol. 54, No. 6 (15 June 2009)

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The credit crisis roiling the world's financial markets will likely take years and entire careers to fully understand and analyze. A short empirical investigation of the current trends, however, demonstrates that the losses in certain markets, in this case the US equity markets, follow a cascade or epidemic flow like model along the correlations of various stocks. A few images and explanation here will suffice to show the phenomenon. Also, whether the idea of "epidemic" or a "cascade" is a metaphor or model for this crisis will be discussed.

Animations of the spread of the crisis are available at http://reggiesmithsci.googlepages.com/creditcrisis

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