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"国家队"基金持股与机构投资者羊群行为

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自2015年股灾以来,"国家队"基金的交易行为备受投资者关注.本文以2015年第三季度至2021年第四季度A股上市公司股票交易数据为样本,研究"国家队"基金持股对机构投资者羊群行为的影响.采用固定效应模型对数据进行回归分析,结果显示"国家队"基金持股加剧了机构投资者羊群行为.进一步分析表明,机构投资者羊群行为与股价同步性之间呈负相关关系,此羊群行为并非是对"国家队"基金持股行为的盲目跟随,而是机构投资者基于市场共同信息及私有信息共同作用的伪羊群行为.这一效应在牛市、熊市或震荡市期间均显著,但在熊市期间影响有所减弱.本文的研究加深了对"国家队"基金干预效应的理解,为科学管理"国家队"基金提供了重要参考.
"National Team"holdings and herd behavior of institutional investors
Since the 2015 stock market crash,the trading activities of the"National Team"funds have drawn significant attention from investors.This paper uses A-share listed company stock trading data from the third quarter of 2015 to the fourth quarter of 2021 to examine the impact of"National Team"fund holdings on institutional investor herding behavior.Employing a fixed effects model for regression analysis,the findings indicate that"National Team"fund holdings exacerbate institutional investor herding behavior.Further analysis reveals a negative correlation between institutional herd behavior and stock price synchronicity,suggesting that this behavior is not merely blind following of"National Team"fund holdings but rather a pseudo-herd behavior influenced by shared market and private information.This effect is consistent across bull,bear,and volatile market conditions,though it is somewhat reduced during bear markets.The conclusions of this study enhance the understanding of the intervention effects of the"National Team"funds and provide valuable insights for their effective management.

"National Team"fundinstitutional investorherd behavior

周终强、周大庆、熊熊

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贵州财经大学应用经济学院,贵阳 550025

贵州省绿色金融与生态环境保护协同创新中心,贵阳 550025

贵州省教育厅高校人文社科研究基地数字经济研究院,贵阳 550025

天津大学管理与经济学部,天津 300072

天津大学复杂管理系统实验室,天津 300072

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"国家队"基金 机构投资者 羊群行为

2024

系统工程理论与实践
中国系统工程学会

系统工程理论与实践

CSTPCDCSSCI北大核心
影响因子:1.575
ISSN:1000-6788
年,卷(期):2024.44(11)