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Limit Theorems for Power Variations of Pure-Jump Processes with Application to Activity Estimation

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  • Viktor Todorov
  • George Tauchen

Abstract

This paper derives the asymptotic behavior of realized power variation of pure-jump It^o semimartingales as the sampling frequency within a fixed interval increases to infinity. We prove convergence in probability and an associated central limit theorem for the realized power variation as a function of its power. We apply the limit theorems to propose an e±cient adaptive estimator for the activity of discretely-sampled It^o semimartingale over a fixed interval.

Suggested Citation

  • Viktor Todorov & George Tauchen, 2010. "Limit Theorems for Power Variations of Pure-Jump Processes with Application to Activity Estimation," Working Papers 10-74, Duke University, Department of Economics.
  • Handle: RePEc:duk:dukeec:10-74
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    Cited by:

    1. Jing, Bing-Yi & Kong, Xin-Bing & Liu, Zhi & Mykland, Per, 2012. "On the jump activity index for semimartingales," Journal of Econometrics, Elsevier, vol. 166(2), pages 213-223.

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