Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/80747 
Authors: 
Year of Publication: 
2013
Series/Report no.: 
Bank of Canada Working Paper No. 2013-29
Publisher: 
Bank of Canada, Ottawa
Abstract: 
Observed high-frequency prices are contaminated with liquidity costs or market microstructure noise. Using such data, we derive a new asset return variance estimator inspired by the market microstructure literature to explicitly model the noise and remove it from observed returns before estimating their variance. The returns adjusted for the estimated liquidity costs are either totally or partially free from noise. If the liquidity costs are fully removed, the sum of squared high-frequency returns - which would be inconsistent for return variance when based on observed returns - becomes a consistent variance estimator when based on adjusted returns. This novel estimator achieves the maximum possible rate of convergence. However, if the liquidity costs are only partially removed, the residual noise is smaller and closer to an exogenous white noise than the original noise. Therefore, any volatility estimator that is robust to noise relies on weaker noise assumptions if it is based on adjusted returns than if it is based on observed returns.
Subjects: 
Econometric and statistical methods
Financial markets
Market structure and pricing
JEL: 
G20
C14
C51
C58
Persistent Identifier of the first edition: 
Document Type: 
Working Paper

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