Munich Personal RePEc Archive

Analysis of dependencies in low frequency financial data sets

Ardia, David (2003): Analysis of dependencies in low frequency financial data sets.

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Abstract

This empirical study proposes a dependency analysis of monthly financial time series. We use the overlapping technique and non-parametric correlation in order to increase both accuracy and consistency. Copulas are used to test extreme co-movements between financial securities. Our results indicate that even in a low-frequency framework, the common practice of assuming independence over time should be taken with caution due to the presence of GARCH effects. In addition, extreme co-movements are observed across securities, especially for interest rates.

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