Abstract
This paper examines the relationship among daily information flow, return volatility, and bid‐ask spreads based on the framework of the mixture of distribution hypothesis (MDH). The MDH model is modified to permit separate effects of informed and liquidity trading volume on return volatility. The results show that the positive relationship between volatility and volume is primarily driven by the informed component of trading. When we control for the information flow, volatility is negatively related to trading volume. Furthermore, bid‐ask spreads are positively related to the intensity of information flow.
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