机构交易的正面效应:波动率和市场效率的视角

被引:21
作者
林忠国
韩立岩
机构
[1] 北京航空航天大学经济管理学院
基金
国家自然科学基金重点项目;
关键词
机构交易; 波动率; 特质波动率; 信息交易概率;
D O I
暂无
中图分类号
F224 [经济数学方法]; F830.91 [证券市场];
学科分类号
0701 ; 070104 ;
摘要
机构投资者能否稳定市场和改善市场效率尚无定论.通过检验不同类型机构投资者的交易行为对波动率和信息效率的影响,基于非平衡面板数据两阶段最小二乘回归模型提供了新的证据.除保险公司以外的机构投资者的交易行为有助于公司私有信息融入股价,使股价更加贴近基本价值,进而提高信息效率和降低波动率.股价信息含量的稳健性检验进一步证实了机构投资者全体和基金的交易行为使股价反映更多的当期和未来盈余信息.整体而言,机构投资者确实起到了稳定市场和改善市场效率的作用,但保险公司在降低波动率和提高信息效率方面没有显著作用.
引用
收藏
页码:606 / 616
页数:11
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