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This paper provides empirical evidence on the relationship between trading volumes, volatility and bid-ask spreads in …. I find that in most cases unexpected trading volumes and volatility are positively correlated, suggesting that both are … correlation between trading volumes and volatility is positive during normal periods but turns negative when volatility increases …
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Abnormal trading volumes around scheduled and unscheduled announcements are investigated and Australian stocks are used to establish whether market characteristics affect trading behavior around announcements. In contrast to the results of earlier studies which mainly focus on the U.S. market,...
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