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Finite sample properties of a QML estimator of stochastic volatility models with long memory

  • Perez, Ana
  • Ruiz, Esther

In this paper, we analyse the finite sample properties of a Quasi-Maximum Likelihood (QML) estimator of Long Memory Stochastic Volatility models based on the Whittle approximation of the Gaussian likelihood in the frequency domain. We extend previous studies by including in our Monte Carlo design all the parameters in the model and some more realistic cases. We show that for the parameter values usually encountered in practice, the properties of this estimator are such that inference is not reliable unless the sample size is extremely large. We also discuss a problem of nonidentification in the AutoRegressive Long Memory Stochastic Volatility Model when the volatility has a unit root and we show up its effect on the small sample properties of the QML estimators. The paper finishes with the empirical analysis of daily observations of the IBEX35 index of the Madrid Stock Exchange as an illustration of the problems faced when using this estimator with real time series.

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Article provided by Elsevier in its journal Economics Letters.

Volume (Year): 70 (2001)
Issue (Month): 2 (February)
Pages: 157-164

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Handle: RePEc:eee:ecolet:v:70:y:2001:i:2:p:157-164
Contact details of provider: Web page: http://www.elsevier.com/locate/ecolet

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  1. Torben Andersen & Tim Bollerslev & Francis X. Diebold & Paul Labys, 1999. "The Distribution of Exchange Rate Volatility," NBER Working Papers 6961, National Bureau of Economic Research, Inc.
  2. Andrew Harvey & Esther Ruiz & Neil Shephard, 1994. "Multivariate Stochastic Variance Models," Review of Economic Studies, Oxford University Press, vol. 61(2), pages 247-264.
  3. Ghysels, E. & Harvey, A. & Renault, E., 1996. "Stochastic Volatility," Cahiers de recherche 9613, Centre interuniversitaire de recherche en économie quantitative, CIREQ.
  4. Bollerslev, Tim & Ole Mikkelsen, Hans, 1996. "Modeling and pricing long memory in stock market volatility," Journal of Econometrics, Elsevier, vol. 73(1), pages 151-184, July.
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  7. Tony Smith & Fallaw Sowell & Stanley Zin, . "Fractional integration with Drift: Estimation in Small Samples," GSIA Working Papers 22, Carnegie Mellon University, Tepper School of Business.
  8. Lobato, I.N. & Savin, N.E., 1996. "Real and Spurious Long Memory Properties of Stock Market Data," Working Papers 96-07, University of Iowa, Department of Economics.
  9. Breidt, F. Jay & Crato, Nuno & de Lima, Pedro, 1998. "The detection and estimation of long memory in stochastic volatility," Journal of Econometrics, Elsevier, vol. 83(1-2), pages 325-348.
  10. Crato, Nuno & de Lima, Pedro J. F., 1994. "Long-range dependence in the conditional variance of stock returns," Economics Letters, Elsevier, vol. 45(3), pages 281-285.
  11. Terence Tai-Leung, Chong & Gilbert Chiu-Sing, Lui, 1998. "Estimating the Fractionally Integrated Process in the Presence of Measurement Errors," Departmental Working Papers _090, Chinese University of Hong Kong, Department of Economics.
  12. Ding, Zhuanxin & Granger, Clive W. J. & Engle, Robert F., 1993. "A long memory property of stock market returns and a new model," Journal of Empirical Finance, Elsevier, vol. 1(1), pages 83-106, June.
  13. Lobato, Ignacio N., 1999. "A semiparametric two-step estimator in a multivariate long memory model," Journal of Econometrics, Elsevier, vol. 90(1), pages 129-153, May.
  14. Richard Payne & Marc Henry, 1997. "An Investigation of Long Range Dependence in Intra-Day Foreign Exchange Rate Volatility," FMG Discussion Papers dp264, Financial Markets Group.
  15. Fabienne Comte & Eric Renault, 1998. "Long memory in continuous-time stochastic volatility models," Mathematical Finance, Wiley Blackwell, vol. 8(4), pages 291-323.
  16. Lobato, Ignacio N & Savin, N E, 1998. "Real and Spurious Long-Memory Properties of Stock-Market Data: Reply," Journal of Business & Economic Statistics, American Statistical Association, vol. 16(3), pages 280-83, July.
  17. Wright, Jonathan H., 1999. "A new estimator of the fractionally integrated stochastic volatility model," Economics Letters, Elsevier, vol. 63(3), pages 295-303, June.
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