首页|机构投资者能有效识别管理层语调信息吗?——基于管理层讨论与分析的文本语调

机构投资者能有效识别管理层语调信息吗?——基于管理层讨论与分析的文本语调

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基于我国 2010-2020 年沪深A股上市公司数据,围绕语调信息的有效性和机构投资者的有效识别展开研究.研究发现:(1)管理层语调信息整体上是有效的.越积极的净语调预示着公司未来业绩越好,股标超额回报越高.(2)机构投资者整体上能有效识别管理层语调信息,其当期持股比例及其变动与管理层语调正相关,显示出超前于市场的投资决策能力.(3)进一步,当管理层语调与公司业绩的变动方向相反时,语调信息的有效性下降,对公司未来业绩预测和股票超额回报均有所降低.而且机构投资者在当期显著降低其投资动机,这进一步验证其对管理层语调操纵问题的有效识别和应对.研究支持机构投资者对管理层语调信息的有效识别,建议进一步完善MD&A信息披露制度,遏制管理层机会主义,提高市场的有效性.
Can institutional investors effectively identify management sentiment?A study based on textual sentiment of management discussion and analysis
Management discussion and analysis(MD&A)is a crucial reference for investment decision-making because it provides investors with forward-looking information about a company's future operations and potential risks.However,there is controversy over information effects and opportunism in practice.This study,based on data from listed companies on the Shanghai and Shenzhen stock exchanges between 2010 and 2020,focuses on the effectiveness of sentiment information and institutional investors'ability to identify it.The study finds that:(1)Overall,management sentiment information is effective.More positive net sentiment forecasts better future company performance and excess stock returns.(2)Institutional investors can generally identify management sentiment information effectively,with their current shareholding proportion and its changes being positively correlated with management sentiment.This demonstrates their capacity for advance investment decision-making compared to the market.(3)When management sentiment goes contrary to the direction of company performance,the effectiveness of sentiment information diminishes,leading to reduced forecasts of future company performance and excess stock returns.Moreover,institutional investors are able to significantly reduce their investment incentives in the current period,which further validates their effective identification and response to management sentiment manipulation issues.The study supports the effective identification of management sentiment information by institutional investors.It also emphasizes the need to incorporate MD&A text information into regulation to curb management opportunism and enhance market efficiency.

沈红波、石若瑜、陈鹏翔

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复旦大学 经济学院,上海 200433

管理层语调 机构投资者 信息效应假说 机会主义假说

国家社会科学基金重大项目

20&ZD102

2024

东南大学学报(哲学社会科学版)
东南大学

东南大学学报(哲学社会科学版)

CSTPCDCSSCICHSSCD北大核心
影响因子:0.848
ISSN:1671-511X
年,卷(期):2024.26(4)
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