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共享的力量:共同机构投资者与股价同步性

The power of sharing:Common institutional ownership and stock price syn-chronicity

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基于机构投资者在行业内的多样化投资行为,本研究从股价同步性视角出发,探究共同机构投资者对资本市场定价效率的影响.研究发现,在投资组合价值最大化目标的驱使下,共同机构投资者能够发挥"协同效应",显著降低投资组合公司的股价同步性,且该结果主要由"信息效率"驱动,排除了"噪音交易"假说.机制分析表明,共同机构投资者能够通过"用手投票"与"用脚投票"的方式改善投资组合公司的信息披露质量,且"用脚投票"的治理效果优于"用手投票".异质性检验发现,在经济政策不确定性较低、行业竞争激烈以及非国有企业的情形下,共同机构投资者对投资组合公司股价同步性的抑制作用更明显.此外,不同类型的共同机构投资者会对投资组合公司股价同步性产生异质性影响.本研究不仅丰富了股价同步性影响因素的研究,而且发现了一种公司治理的新机制,为监管部门规范机构投资者在行业内的多样化投资行为,提升资本市场定价效率提供了理论依据.
Based on the diversified investment of institutional investors in the industry,this paper explores the influence of common institutional ownership on the pricing efficiency of the capital market from the perspective of stock price synchronicity.It is found that common institutional ownership can generate a"synergy effect"and reduce firms'stock price synchronicity to maximize the portfolio value.This result is mainly driven by an"information efficiency effect",excluding the"noise trading"hypothesis.The mechanism analysis shows that common institutional ownership can improve the information disclosure quality by"voting with hands"and"voting with feet",with the impact of"voting with feet"being stronger than"voting with hands".The hetero-geneity test finds that under conditions of low economic policy uncertainty,intense industry competition,and non-SOEs,common institutional ownership had a more significant inhibitory effect on stock price synchronici-ty.In addition,different types of common institutional ownership have heterogeneous effects on firms'stock price synchronicity.This paper not only enriches the study of the factors influencing stock price synchronicity but also discovers a new mechanism of corporate governance.The findings provide a theoretical basis for regu-lating institutional investors'diversified investment behaviors in the industry and improving the pricing effi-ciency of the capital market.

common institutional ownershipinformation efficiencystock price synchronicity

李玉敏、吴晓晖、秦利宾、朱磊、柯艳蓉

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南京理工大学经济管理学院,南京 210094

厦门大学管理学院,厦门 361005

中南财经政法大学会计学院,武汉 430073

闽南师范大学商学院,漳州 363000

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共同机构投资者 信息效率 股价同步性

2024

管理科学学报
天津大学 国家自然科学基金委员会管理科学部

管理科学学报

CSTPCDCSSCICHSSCD北大核心
影响因子:2.573
ISSN:1007-9807
年,卷(期):2024.27(11)