Abstract
This paper considers the relationship between traded volume and volatility allowing for the impact of short sales. The evidence supports a nonlinear, bidirectional relationship between volume and volatility. Short selling is found to have a significant impact on this relationship, and our results suggest (i) that the Hong Kong market displays greater volatility following a period of short selling and (ii) that asymmetric responses to positive and negative innovations to returns appear to be exacerbated by short selling.
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