Estimating High-Frequency Based (Co-) Variances: A Unified Approach
82 Pages Posted: 26 Jul 2007 Last revised: 12 Jun 2008
Date Written: November 19, 2007
Abstract
We propose a unified framework for estimating integrated variances and covariances based on simple OLS regressions, allowing for a general market microstructure noise specification. We show that our estimators can outperform, in terms of the root mean squared error criterion, the most recent and commonly applied estimators, such as the realized kernels of Barndorff-Nielsen, Hansen, Lunde & Shephard (2006), the two-scales realized variance of Zhang, Mykland & Aït-Sahalia (2005), the Hayashi & Yoshida (2005) covariance estimator, and the realized variance and covariance with the optimal sampling frequency derived in Bandi & Russell (2005a) and Bandi & Russell (2005b). For a realistic trading scenario, the efficiency gains resulting from our approach are in the range of 35% to 50%.
Keywords: High frequency data, Realized volatility and covariance, Market microstructure
JEL Classification: G10, F31,C32
Suggested Citation: Suggested Citation
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