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La hipótesis de martingala en el mercado bursátil mexicano

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  • Nadiezhda de la Uz

    (Tecnológico de Monterrey, Campus Ciudad de México)

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    Abstract

    We examine the martingale hypothesis for the Mexican stock market during the period 1993 - 2000. This research includes 97% of all securities with medium and high trading frequency. The proposed tests are robust when dealing with non normal and heteroskedastic data. The tests use the fact that the variances from continuously compounded returns are lineal in time. The hypothesis is not rejected for the main Mexican stock indexes (the IPC and the INMEX). For individual stocks we find that in 70% of the examined cases, the hypothesis is not rejected. Finally, we include proofs of long- range independence, which are required for the derivation of the relevant statistics

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    Bibliographic Info

    Article provided by El Colegio de México, Centro de Estudios Económicos in its journal Estudios Económicos.

    Volume (Year): 17 (2002)
    Issue (Month): 1 ()
    Pages: 91-127

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    Handle: RePEc:emx:esteco:v:17:y:2002:i:1:p:91-127

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    Web page: http://www.colmex.mx/centros/cee/
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    1. LeRoy, Stephen F, 1989. "Efficient Capital Markets and Martingales," Journal of Economic Literature, American Economic Association, vol. 27(4), pages 1583-1621, December.
    2. White, Halbert & Domowitz, Ian, 1984. "Nonlinear Regression with Dependent Observations," Econometrica, Econometric Society, vol. 52(1), pages 143-61, January.
    3. Ojah, Kalu & Karemera, David, 1999. "Random Walks and Market Efficiency Tests of Latin American Emerging Equity Markets: A Revisit," The Financial Review, Eastern Finance Association, vol. 34(2), pages 57-72, May.
    4. Peter C.B. Phillips & Pierre Perron, 1986. "Testing for a Unit Root in Time Series Regression," Cowles Foundation Discussion Papers 795R, Cowles Foundation for Research in Economics, Yale University, revised Sep 1987.
    5. Grieb, Terrance & Reyes, Mario G, 1999. "Random Walk Tests for Latin American Equity Indexes and Individual Firms," Journal of Financial Research, Southern Finance Association & Southwestern Finance Association, vol. 22(4), pages 371-83, Winter.
    6. Longstaff, Francis A, 1995. "Option Pricing and the Martingale Restriction," Review of Financial Studies, Society for Financial Studies, vol. 8(4), pages 1091-1124.
    7. Urrutia, Jorge L, 1995. "Tests of Random Walk and Market Efficiency for Latin American Emerging Equity Markets," Journal of Financial Research, Southern Finance Association & Southwestern Finance Association, vol. 18(3), pages 299-309, Fall.
    8. Lo, Andrew W. (Andrew Wen-Chuan), 1989. "Long-term memory in stock market prices," Working papers 3014-89., Massachusetts Institute of Technology (MIT), Sloan School of Management.
    9. B. Mandelbrot, 1972. "Statistical Methodology For Nonperiodic Cycles: From The Covariance To Rs Analysis," NBER Chapters, in: Annals of Economic and Social Measurement, Volume 1, number 3, pages 259-290 National Bureau of Economic Research, Inc.
    10. James M. Poterba & Lawrence H. Summers, 1987. "Mean Reversion in Stock Prices: Evidence and Implications," NBER Working Papers 2343, National Bureau of Economic Research, Inc.
    11. Greene, Myron T. & Fielitz, Bruce D., 1977. "Long-term dependence in common stock returns," Journal of Financial Economics, Elsevier, vol. 4(3), pages 339-349, May.
    12. Black, Fischer & Scholes, Myron S, 1973. "The Pricing of Options and Corporate Liabilities," Journal of Political Economy, University of Chicago Press, vol. 81(3), pages 637-54, May-June.
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