Sector Price Co-Movements and Portfolio Risk Assessment in the Saudi Market: A Wavelet Coherency Analysis

Abstract:

This paper investigates the short and the long dependencies between Saudi stock market sectors and assesses their systematic risk over the period 2007-2012. We implement the wavelet coherency approach which simultaneously involves three dimensions; frequency, time and wavelet squared coherency power. The empirical results reveal higher dependencies over time in the long term in sector returns.
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