A No-Arbitrage Approach to Range-Based Estimation of Return Covariances and Correlations
We extend range-based volatility estimation to the multivariate case. In particular, we propose a range-based covariance estimator motivated by a key financial economic consideration, the absence of arbitrage, in addition to statistical considerations. We show that this estimator is highly efficient yet robust to market microstructure noise arising from bid-ask bounce and asynchronous trading.
Michael W. Brandt & Francis X. Diebold, 2006. "A No-Arbitrage Approach to Range-Based Estimation of Return Covariances and Correlations," Journal of Business, University of Chicago Press, vol. 79(1), pages 61-74, January. citation courtesy of