ESG表现与股价崩盘风险

本文选取2013-2020年沪深A股上市公司数据为样本，研究了环境、社会责任及公司治理（ESG）表现对企业股价崩盘风险的影响。研究表明：良好的ESG表现能够发挥监督效应和声誉效应，即通过提高企业的外部监督和声誉水平，进而抑制其股价崩盘风险。进一步研究发现，企业信息环境越差，ESG表现对企业股价崩盘风险的抑制作用越强；经济政策不确定性越高时，ESG表现对企业股价崩盘风险抑制作用越为明显。研究基于企业ESG表现这一非财务指标，扩展了企业股价崩盘风险的影响因素研究，肯定了良好的ESG表现在微观的企业层面所发挥的积极作用，也对维护资本市场稳定、促进我国经济高质量发展具有一定的现实意义。     

过度投资对企业股价崩盘风险的影响研究——基于货币政策视角

本文从货币政策角度出发探讨过度投资与股价风险之间的关系,采用面板OLS模型进行回归.研究发现:(1)过度投资会累积资产泡沫,在坏消息或者不良预期下加大股价崩盘风险;(2)紧缩的货币政策可以通过改善公司治理抑制过度投资以及非效率投资,通过过度投资起到反向调节效应,降低股价崩盘风险.本文将货币政策与过度投资和股价风险放在一个框架中展开研究,宏微观相结合,可以为金融市场去杠杆化、加强宏观审慎监管、防范金融风险提供参考.     

企业过度投资与股价崩盘风险

实体经济的过热投资是否会导致股市出现“泡沫”进而引发股市的暴跌风险是当前学术界和实务界关注的一个焦点问题。本文以2004-2013年A股上市公司为样本,从微观层面考察企业过度投资对股价崩盘风险的影响,并从“代理理论”和“管理者过度自信”两种视角分析其背后的作用机理。研究结果表明:(1)企业过度投资显著加剧了股价未来的崩盘风险;(2)股东与经理人之间的代理冲突而非管理者过度自信是导致二者正相关的主要原因;(3)进一步的研究发现,企业过度投资对未来股价崩盘风险的影响具有长期性,且其对股价未来的暴涨不具有预测能力。本文的研究结论不仅丰富了股价崩盘风险、过度投资等相关领域的文献,对于如何抑制实体经济投资过热以降低股价崩盘风险、维护金融市场稳定也具有重要的参考价值。     

企业公司治理、金融市场化与股价崩盘风险研究

本文基于我国沪、深两市A股上市公司的数据,从企业内部微观治理和外部宏观环境视角出发,系统研究了终极所有权、金融市场化对股价崩盘风险的影响效应,得出如下研究结论:一是终极控制股东现金流权越高、两权分离度越低,则代理成本与信息不透明度越低,公司股价崩盘风险越小;二是所处地区金融市场化水平越高,公司股价崩盘风险越低;三是金融市场化在终极所有权与股价崩盘风险的影响关系中具有负向调节效应,较高的金融市场化水平能够有效发挥外部治理作用,削弱了两权分离度对公司股价崩盘风险的影响.本文丰富并拓展了对终极所有权、金融市场化与股价崩盘风险影响因素的相关研究,对我国公司治理发展、金融体制改革以及金融风险防范具有重要启示意义.     

官员晋升压力会增加国有企业股价崩盘风险吗？

以2007-2016年我国A股国有上市公司为样本,考察官员晋升压力对国有企业股价崩盘风险的影响。研究发现：官员晋升压力加剧了国有企业的股价崩盘风险,尤其是在政府干预程度较大的地区;进一步作用机制检验显示,官员晋升压力是通过国有企业管理层隐藏负面消息、增加过度投资以及降低环境治理水平而加剧股价崩盘风险的。本文的研究丰富了股价崩盘风险影响因素的理论成果,进一步揭示了官员晋升压力对微观企业的干预作用,并为地方官员晋升考核机制的完善提供了政策启示。     

投资者情绪异质性能影响股价崩盘风险吗?

本文选取1999—2016年沪深A股市场交易数据以及与投资者情绪相关的数据,从市场层面研究了股价崩盘风险与投资者情绪之间的关系。实证研究发现,投资者情绪是股价崩盘风险的单向格兰杰原因,且股价崩盘风险往往要滞后于投资者情绪3期左右。进一步研究表明,投资者情绪对股价崩盘风险具有非对称性影响,即乐观情绪对崩盘风险具有显著影响,而悲观情绪对崩盘风险影响不显著。     

企业ESG表现、机构持股意愿与股价崩盘风险

随着ESG理念逐渐影响我国资本市场，机构投资者已将企业ESG表现作为投资决策的重要依据之一，企业ESG表现和机构投资者的行为将对股价崩盘风险产生重要影响。本文选取2011—2021年我国沪深A股上市公司的ESG评级、财务信息和股价风险的面板数据，实证分析了企业ESG表现、机构持股意愿以及股价崩盘风险之间的影响逻辑和作用机制。研究结果显示：企业ESG表现越好，其股价崩盘风险越小；机构持股意愿越强对公司股价崩盘风险具有抑制作用；机构投资者对ESG表现好的企业存在一定的偏好，将其纳入投资组合，进一步降低股价崩盘风险。进一步地，通过异质性分析发现ESG对股价崩盘风险的抑制作用在国有企业、中西部地区和非制造业中表现更强，这一研究结果对企业和机构投资者践行ESG可持续发展理念和维护股票市场稳定具有重要参考价值。     

企业CEO权力强度会加剧股价崩盘风险吗?

本文探讨了企业CEO权力强度与股价崩盘风险之间的内在关系,并考察企业的监督机制能否缓解CEO权力对股价崩盘风险的影响,研究发现:CEO权力强度对企业股价崩盘风险有显著的正向影响;相比非国有企业,国有企业CEO权力对股价崩盘风险的影响更大;企业的监事会规模会加剧CEO权力和股价崩盘之间的正相关关系,而独立董事对两者关系有着负向影响,但统计上并不显著.     

并购商誉减值对股价崩盘风险的影响研究

本文以2009年至2018年中国上市公司为样本,对商誉减值如何影响股价崩盘风险进行研究。结果显示:商誉减值与股价崩盘风险在0.01水平上显著正相关,说明商誉减值促进了股价崩盘风险。进一步研究结论显示:当公司内部治理水平越差时,商誉减值对公司股价崩盘风险的正向影响越明显;当公司机构投资者持股比例越低时,商誉减值对公司股价崩盘风险的正向影响越明显。本文结论丰富了股价崩盘风险的影响因素、商誉减值的经济后果等相关文献,为公司缓解股价崩盘风险提供了科学依据。     

ESG评级、机构投资者持股比例与股价崩盘风险

本文使用2012-2021年沪深A股上市公司的数据,研究分析上市公司ESG信息披露对股价崩盘风险的影响。研究结果表明:(1)上市公司ESG信息披露水平与股票市场价格崩盘风险呈显著的负相关。(2)机制检验表明,上市公司ESG信息披露能够促进机构投资者增加持股比例,作为资本市场的信息中介,机构投资者将会释放更多积极的股价信息,对资本市场产生积极效应,并促进投资者进行合理的投资决策,进而降低股价崩盘风险。(3)异质性分析发现,对于非国有企业、非重污染企业、大规模上市公司,其ESG信息披露抑制股价崩盘风险的作用更强。     

Making honest men of them: Institutional investors,financial reporting,and the appointment of female directors to all-male boards

In this paper, we theorize that dedicated institutional investors are more likely than transient institutional investors to appoint female directors to investee firms with all-male boards, particularly those with high opacity. We conjecture that dedicated investors appoint female directors as a governance mechanism to improve the financial reporting quality of these investee firms. Specifically, we find that through the appointment of female directors, dedicated institutional investors trigger the release of stockpiled negative accounting information, thereby increasing the likelihood of a stock price crash risk. We also show that dedicated investors, through the appointment of female directors, improve investee firms' corporate disclosure environment by decreasing earnings management. Finally, we find that through continued service on investee firms' boards, female directors reduce the future likelihood of a stock price crash.     

Stock price crash risk and CEO power: Firm-level analysis

This study examines the impact of stock price crash risk on future CEO power. Using a large panel sample with 17,816 firm-year observations, we posit and find a significant negative impact of stock price crash risk on CEO power, suggesting that CEO power becomes smaller after stock price crashes. We also find that our results are stronger for firms with female CEOs and are largely driven by firms with shorter-tenure CEOs. In addition, we find that the significant negative impact of stock price crash risk on CEO power is diminished for firms with strong corporate governance. Our study responds to the call in Habib, Hasan, and Jiang (2018) by providing more empirical evidence on the consequences of stock price crash risk.     

Multi-dimensional corporate social responsibilities and stock price crash risk: Evidence from China

Worldwide, there has been an ongoing debate about whether corporate social responsibility (CSR) can lead to better financial market performance, or whether corporations can do well by doing good. Working with a sample of all listed companies in China from 2010 to 2017, this study examines the impacts of three dimensions of CSR on stock price crash risk. We find that CSR, especially firms' responsibility to the environment and stakeholders, significantly reduces stock price crash risk, while social contributions such as charitable donations have no significant effect on stock crash risk. Attracting long-term institutional investors is the primary mechanism through which CSR can curb crash risk. Mitigating earnings management is also a channel through which overall CSR and stakeholder responsibility contribute to a lower stock crash risk. Finally, we find that stakeholder responsibility and environmental responsibility can help improve stock market performance.     

Information interaction among institutional investors and stock price crash risk based on multiplex networks

Using a large sample of A-share listed companies on the Chinese stock market, we investigate the impact of information interaction among institutional investors (IIAII) on stock price crash risk. IIAII is measured using a multiplex network constructed from data on the multiple social relations of institutional investors. We find a positive and significant relationship between IIAII and crash risk. The results of the influencing mechanism analysis show that IIAII influences crash risk through the herd effect rather than the monitoring effect. Overall, our findings elucidate the important role of institutional investors in corporate governance and promote the application of multiplex network theory to the financial field.     

Board diversity and stock price crash risk

We show how board diversity influences stock price crash risk. By classifying board diversity into relation-oriented diversity (gender and age) and task-oriented diversity (tenure and education), we find that greater diversity on board can lower the risk of future stock crash. Additional analyses show that the effect of board diversity on future crash risk is stronger for firms with high information opacity and low institutional ownership. Overall, our findings provide new insights and suggest for more diverse boards to improve corporate governance practices.     

Short-sale constraints and stock price crash risk: Causal evidence from a natural experiment

We examine the relation between short-sale constraints and stock price crash risk. To establish causality, we take advantage of a regulatory change from the Securities and Exchange Commission (SEC)’s Regulation SHO pilot program, which temporarily lifted short-sale constraints for randomly designated stocks. Using Regulation SHO as a natural experiment setting in which to apply a difference-in-differences research design, we find that the lifting of short-sale constraints leads to a significant decrease in stock price crash risk. We further investigate the possible underlying mechanisms through which short-sale constraints affect stock price crash risk. We provide evidence suggesting that lifting of short-sale constraints reduces crash risk by constraining managerial bad news hoarding and improving corporate investment efficiency. The results of our study shed new light on the cause of stock price crash risk as well as the roles that short sellers play in monitoring managerial disclosure strategies and real investment decisions.     

Institutional Investors and Firm Efficiency of Real Estate Investment Trusts

This study investigates the effect of institutional ownership on improving firm efficiency of equity Real Estate Investment Trusts (REITs), using a stochastic frontier approach. Firm inefficiency is estimated by comparing a benchmark Tobin??s Q of a hypothetical value-maximizing firm to the firm??s actual Q. We find that the average inefficiency of equity REITs is around 45.5%, and that institutional ownership can improve the firm??s corporate governance, and hence reduce firm inefficiency. Moreover, we highlight the importance of heterogeneity in institutional investors??certain types of institutional investors such as long-term, active, and top-five institutional investors, and investment advisors are more effective institutional investors in reducing firm inefficiency; whereas hedge funds and pension funds seem to aggravate the problem. In sub-sample analysis, we find that these effective institutional investors can reduce inefficiency more effectively for distressed REITs, and for REITs with high information asymmetry, and with longer term lease contracts. Lastly, we find that the negative impact of institutional ownership (except for long-term institutional investors) on firm inefficiency reduces over time, possibly due to strengthened corporate governance and regulatory environment in the REIT industry.     

投资者关注与股价崩盘风险:抑制还是加剧?

本文以2010—2017年中国A股上市公司为样本,考察了投资者关注影响股价崩盘风险的客观表现和传导路径。研究发现,投资者关注度的提高会显著加剧下一期的股价崩盘风险,存在“关注度的崩盘效应”;分组检验发现,关注度的崩盘效应仅在机构持股比例低的公司和市场处于牛市状态下存在;路径检验发现,投资者关注不存在信息路径,没有改善公司信息透明度,但存在部分的情绪路径,提高了股价同步性和投资者情绪,从而加剧了股价崩盘风险。建议监管部门重视投资者关注对股价带来的冲击,通过进一步提高机构者持股比例,缓解情绪过热导致的定价错误程度,降低股价崩盘风险。     

Institutional cross-ownership and stock price crash risk

Using manually collected data of Chinese listed firms during the period 2007–2018, we provide strong and robust evidence that institutional cross-ownership is negatively associated with firm-specific stock price crash risk. Building on China’s institutional settings, we document that the negative relation is more pronounced for firms located in provinces with higher political uncertainty, or state-owned enterprises. This paper also conducts several mechanisms analyses and has confirmed three potential influencing mechanisms, such as information advantage, governance improvement and anticompetitive incentives, in explaining the effect of institutional cross-ownership on stock price crash risk. Overall, this paper develops a new perspective to investigate the ways to alleviate stock price crash risk in emerging markets.