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Asymptotics of Realized Volatility with Non-Gaussian ARCH(∞) Microstructure Noise

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  • Hiroyuki Taniai
  • Takashi Usami
  • Nobuyuki Suto
  • Masanobu Taniguchi

Abstract

In order to estimate the conditional variance of some specific day, the sum of squared intraday returns, as known as "realized volatility" (RV) or "realized variance," is often used. Although this estimator does not converge to the true volatility when the observed price involves market microstructure noise, some subsample-based estimator is known to resolve this problem. In this paper, we will study the asymptotics of this estimator, assuming that market microstructure noise follows a non-Gaussian autoregressive conditional heteroskedastic model of order ∞ (ARCH(∞)). There we elucidate the asymptotics of RV and subsample estimator, which are influenced by the non-Gaussianity and dependent structure of the noise. Some numerical studies are given, and they illuminate interesting features of the asymptotics. Copyright The Author, 2012. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org, Oxford University Press.

Suggested Citation

  • Hiroyuki Taniai & Takashi Usami & Nobuyuki Suto & Masanobu Taniguchi, 2012. "Asymptotics of Realized Volatility with Non-Gaussian ARCH(∞) Microstructure Noise," Journal of Financial Econometrics, Oxford University Press, vol. 10(4), pages 617-636, September.
    • Handle: RePEc:oup:jfinec:v:10:y:2012:i:4:p:617-636
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