Drift Independent Volatility Estimation Based on High, Low, Open, and Close Prices

2000/07/01 by Dennis Yang, Dennis Tao Yang, Qiang Zhang · 455 citations
Economics, Econometrics and Finance · #Econometrics #Economics #Estimation #Financial Risk and Volatility Modeling #Market Dynamics and Volatility #Stochastic processes and financial applications #Volatility (finance)

paper · doi:10.1086/209650

published in The Journal of Business 73(3), 477-492 (University of Chicago Press)

openalex publication_date 2000/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/26

Abstract

We present a new volatility estimator based on multiple periods of high, low, open, and close prices in a historical time series. The new estimator has the following nice properties: it is (a) unbiased in the continuous limit, (b) independent of the drift, (c) consistent in dealing with opening price jumps. Furthermore, it has the smallest variance among all estimators with similar properties. The improvement of accuracy over the classical close-to-close estimator is dramatic for real-life time series. Copyright 2000 by University of Chicago Press.

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