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Arbitrage and Convergence: Evidence from Mexican ADRs

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  • Samuel Koumkwa
  • Raul Susmel

Abstract

This paper investigates the convergence between the prices of ADRs and Mexican traded shares using a sample of 21 dually listed shares. Since both markets have similar trading hours, standard arbitrage considerations should make persistent deviation from price parity rare. We use a STAR model, where the dynamics of convergence to price parity are influenced by the size of the deviation from price parity. Based on different tests, we select the ESTAR model. Deviations from price parity tend to die out quickly; for 14 out of 21 pairs it takes less than two days for the deviations from price parity to be reduced by half. The average half-life of a shock to price parity is 3.1 business days, while the median half-life is 1.1 business days. By allowing a non-linear adjustment process, the average half-life is reduced by more than 50% when compared to the standard linear arbitrage model. We find that several liquidity indicators are positively correlated to the speed of convergence to price parity.

Suggested Citation

  • Samuel Koumkwa & Raul Susmel, 2008. "Arbitrage and Convergence: Evidence from Mexican ADRs," Journal of Applied Economics, Taylor & Francis Journals, vol. 11(2), pages 399-425, November.
    • Handle: RePEc:taf:recsxx:v:11:y:2008:i:2:p:399-425
    DOI: 10.1080/15140326.2008.12040513
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    Cited by:

    1. Ghadhab, Imen & Hellara, Slaheddine, 2015. "The law of one price, arbitrage opportunities and price convergence: Evidence from cross-listed stocks," Journal of Multinational Financial Management, Elsevier, vol. 31(C), pages 126-145.
    2. Lee, Chien-Chiang & Chang, Chi-Hung & Chen, Mei-Ping, 2015. "Industry co-movements of American depository receipts: Evidences from the copula approaches," Economic Modelling, Elsevier, vol. 46(C), pages 301-314.
    3. Hansi Hu & Terry Walter, 2023. "Dividend imputation taxes and the curious case of a price premium between BHP and Billiton American depositary receipts," Accounting and Finance, Accounting and Finance Association of Australia and New Zealand, vol. 63(1), pages 691-717, March.

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