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Phase Transition in the S&P Stock Market

We analyze the stock prices of the S&P market from 1987 until 2012 with the covariance matrix of the firm returns determined in time windows of several years. The eigenvector belonging to the leading eigenvalue (market) exhibits in its long term time dependence a phase transition with an order parameter which can be interpreted within an agent-based model. From 1995 to 2005 the market is in an ordered state and after 2005 in a disordered state.
Year of publication:
2013-06
Authors: Raddant, Matthias ; Wagner, Friedrich
Institutions: arXiv.org
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application/pdf
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Type of publication: Book / Working Paper
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Persistent link: https://www.econbiz.de/10010667408
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