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上海股市日内流动性——深度变化实证研究 被引量:34

An Empirical Analysis of Intraday Depth Behavior on Shanghai Stock Exchange
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摘要 本文实证研究了上海股票市场日内和日际流动性———深度的变化和决定因素。上交所属于纯委托单驱动型市场 ,没有指定的做市商。市场流动性是由投资者个人和机构投资者提交的限价委托单提供的。利用从 2 0 0 0年 1月 1 0日到 2 0 0 0年 6月 3 0日之间在上交所上市的 3 3 1只股票的日内数据 ,研究发现沪市存在显著的周内和日内流动性图形。总体上看 ,日内深度图形呈倒S形。在选择了反映深度决定因素的变量如交易量、平均交易大小、方差、价格、流通市值等变量以后 ,深度的周内和日内图形仍然成立。深度和价差成负相关关系的一个重要隐含意义就是深度和价差的共同作用能够加大对流动性的影响 ,这意味着限价委托单的投资者通过调整价差和深度来提供流动性。另外 ,开盘时较小的深度和收盘时较大的深度的现象不能单独用信息不对称理论来解释 ,还应该归因于其他因素 ,诸如用周期性的需求增加理论和存在隐性的垄断做市商理论来解释。 This study investigates interday and intraday depth behavior of companies listed on Shanghai Stock Exchange (SHSE), which is an order-driven market without designated market makers. Based on 331 listed companies' intraday data from January 10, 2000 to June 30,2000, it is found that there exist significant intraweek and intraday liquidity patterns. The empirical results indicate that the intraday depth follow a reverse S-shaped pattern. The negative association between spread and depth on SHSE implies that limit order traders actively manage both price and quantity dimensions of liquidity by adjusting the spread and depth. Further, the narrower depth in the market open and the larger depth around the market close may be attribute to factors such as asymmetric information, periodic increase of demand and existence of monopolistic implicit market makers.
机构地区 清华大学
出处 《金融研究》 CSSCI 北大核心 2003年第6期25-37,共13页 Journal of Financial Research
基金 国家自然科学基金 (项目编号 :70 1 0 3 0 0 2 ) 加拿大和中国大学产业合作伙伴项目 国家自然科学基金(CCUIP -NSFC 项目编号 :70 1 42 0 0 3 ) 清华大学经济管理学院基础研究基金的资助
关键词 流动性 深度 委托单驱动型市场 上交所 liquidity, depth, order-driven market, Shanghai Stock Exchange
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参考文献15

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