No News Is Not Good News: Evidence from the Intraday Return Volatility - Volume Relationship in Shanghai Stock Exchange
Journal of the Asia Pacific Economy, Vol 18 (1), 149-167, 2012
32 Pages Posted: 20 Jan 2014 Last revised: 10 Sep 2014
Date Written: January 31, 2012
Abstract
Through this research, we find that the asymmetric volatility phenomenon is reversed in the Shanghai Stock Exchange during bull markets. That is, volatility increases more with good news than with bad news. This evidence is inconsistent with the US markets. Further examination of this phenomenon reveals that the positive impact of good news on volatility is driven by return chasing behaviour of investors during bull markets. We also find that volatility increases after stock price declines in bear markets. After controlling for liquidity shifts, we observe similar patterns in volatility in both bull and bear markets. We posit that institutional and behavioural factors are the major driving forces of observed volatility patterns in Chinese stock market.
Keywords: MDH, trading volume, return volatility, asymmetric effect, EGARCH-GED, Chinese stock market
JEL Classification: G12, G14, G15
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