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Testing the efficient market hypothesis in Latin American stock markets

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  • Sánchez-Granero, M.A.
  • Balladares, K.A.
  • Ramos-Requena, J.P.
  • Trinidad-Segovia, J.E.

Abstract

We propose a novel approach to study if Latin America Stock Markets are Efficient. This test is based on a statistical arbitrage technique known as Pairs Trading, which is a relative value trading strategy consisting in taking a position in a pair of stocks that are chosen to have similar characteristics and taking a long position in one stock and a short position in the other stock. We use an approach introduced in Ramos et al. (2007) based on the evolution of the Hurst Exponent of a pair. We will show how in emerging markets this trading strategy is profitable though it is not in developed markets, which is according with the weak form of efficiency.

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  • Sánchez-Granero, M.A. & Balladares, K.A. & Ramos-Requena, J.P. & Trinidad-Segovia, J.E., 2020. "Testing the efficient market hypothesis in Latin American stock markets," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 540(C).
    • Handle: RePEc:eee:phsmap:v:540:y:2020:i:c:s037843711931739x
    DOI: 10.1016/j.physa.2019.123082
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