Posts Tagged ‘Gaussian Ditribution

09
Feb
11

Paper: Dependencia estadistica del S&P

A Copula Approach on the Dynamics of Statistical Dependencies in the US Stock Market

Abstract

We analyze the statistical dependency structure of the S&P 500 constituents in the 4-year period from 2007 to 2010 using intraday data from the New York Stock Exchange’s TAQ database. With a copula-based approach, we find that the statistical dependencies are very strong in the tails of the marginal distributions. This tail dependence is higher than in a bivariate Gaussian distribution,which is implied in the calculation of many correlation coeffcients. We compare the tail dependence to the market’s average correlation level as a commonly used quantity and disclose an neraly linear relation.

Link al Paper




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