New evidence on the relation between return volatility and trading volume
Thomas Chiang (),
Zhuo Qiao and
Wing-Keung Wong ()
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Zhuo Qiao: Faculty of Business Administration, University of Macau, Macau, Postal: Faculty of Business Administration, University of Macau, Macau
Journal of Forecasting, 2010, vol. 29, issue 5, 502-515
In the empirical literature, it has been shown that there exists both linear and non-linear bi-directional causality between trading volumes and return volatility (measured by the square of daily return). We re-examine this claim by using realized volatility as an estimator of the unobserved volatility, adopting a stationary de-trended trading volume, and applying a more recent data sample with robustness tests over time. Our linear Granger causality test shows that there is no causal linear relation running from volume to volatility, but there exists an ambiguous causality for the reverse direction. In contrast, we find strong bi-directional non-linear Granger causality between these two variables. On the basis of the non-linear forecasting modeling technique, this study provides strong evidence to support the sequential information hypothesis and demonstrates that it is useful to use lagged values of trading volume to predict return volatility. Copyright © 2009 John Wiley & Sons, Ltd.
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