The asymptotic theories used to estimate the integrated variance using realised variance or multipower variation suggest that returns should be sampled at the highest possible frequency. This leads to a bias problem due to market microstructure effects that can completely invalidate the theory. There is a trade-off between bias and variance when choosing the sample frequency. There is an urgent need for estimators of integrated variance that are unbiased and efficient under these effects. In this paper, multipower variation is studied under this perspective and alternative estimators are defined using the subsampling and averaging method

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The asymptotic theories used to estimate the integrated variance using realised variance or multipower variation suggest that returns should be sampled at the highest possible frequency. This leads to a bias problem due to market microstructure effects that can completely invalidate the theory. There is a trade-off between bias and variance when choosing the sample frequency. There is an urgent need for estimators of integrated variance that are unbiased and efficient under these effects. In this paper, multipower variation is studied under this perspective and alternative estimators are defined using the subsampling and averaging method

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Carla Ysusi

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Paper provided by Banco de México in its series Working Papers with number 2007-13.

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Date of creation: Oct 2007
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Handle: RePEc:bdm:wpaper:2007-13

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Find related papers by JEL classification:
C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: General - - - Estimation
C51 - Mathematical and Quantitative Methods - - Econometric Modeling - - - Model Construction and Estimation
G19 - Financial Economics - - General Financial Markets - - - Other

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