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Trade-size clustering and price efficiency

机译:贸易大小聚类和价格效率

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Using a sample of 26 markets, this paper investigates if trade-size clustering affects price efficiency. Our results suggest that more clustering trades are associated with greater resemblance of a random walk, less pricing errors, and shorter price delays. Moreover, we examine three underlying mechanisms to explain how clustering improves efficiency. First, we show that clustering trades are informative, consistent with the idea that stealth traders leverage such tactics to convey private information to prices. Second, we discover that clustering trades are positively related to investor attention (stock liquidity), implying that informed clustering trades happen at the presence of enormous uninformed investors. High attention and liquid markets help reduce the trading friction, thereby prompting quick price adjustments to private information released by the stealth trading.
机译:使用26个市场的样本,本文调查了贸易大小集群是否影响价格效率。我们的研究结果表明,更多的聚类交易与随机散步的更大类似,较少的定价错误和更短的价格延误相关。此外,我们研究了三种潜在的机制来解释聚类如何提高效率。首先,我们表明聚类交易是信息性的,与隐形交易商利用此类策略将私人信息传达给价格的想法一致。其次,我们发现聚类交易与投资者关注(股票流动性)积极地相关,这意味着在巨大的不知情投资者的存在下发生了通知的聚类交易。高度关注和液体市场有助于减少交易摩擦力,从而促使您的隐形交易发布的私人信息进行快速价格调整。

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