股权集中,投资决策与代理成本

通过建立实物期权模型,我们分析了集中股权结构下,股东异质性所导致的控股股东代理冲突对企业投资决策和负债融资代理成本的影响。研究发现,集中股权结构下的控股股东价值最大化动机会导致过度投资的产生,并显著提高负债融资的代理成本,即控股股东的价值侵占行为不仅影响到大小股东间的代理冲突,而且会加重股东与债权人之间的代理冲突。控股股东的持股比例会产生公司治理的正向激励效应,持股比例的增加会降低过度投资程度、增加企业价值和降低负债融资代理成本。而控制权和现金流权的分离则会产生公司治理的负向侵占效应,分离程度的增加会导致更严重的过度投资、更低的企业价值和更高的负债融资代理成本。     

Corporate boards, audit committees and voluntary disclosure: evidence from Italian Listed Companies

This paper investigates the interplay between governance and disclosure in an agency setting, featured by concentrated ownership and high insider shareholders representation in the board. In this context, agency conflicts happen between large controlling shareholders and minority outside investors, with risks of private benefits exploitation. We regressed a voluntary disclosure index on seven governance variables related either to the board structure and functioning. The empirical evidence is provided by the Italian stock market. Our results suggest the presence of a complementary relationship between governance and disclosure. Diligent monitoring activity is associated with greater transparency to the outside. The findings are consistent with the view that internal and external control tend to be present at the same time, since the presence of one of them reduces the incentive for the controlling shareholders to limit the other. The empirical evidence also show that larger boards are not detrimental to outside shareholders, with regard to voluntary disclosure. The study can contribute to the understanding of the relationship between governance and disclosure in a particular agency setting. They might be of interest to practitioners and regulators, insofar as they are consistent with calls for more disclosure requirements in this agency setting.     

大股东治理及股东之间的代理问题研究综述

大股东在公司治理中扮演着重要的角色。大股东的出现可以解决股东分散带来的搭便车问题,减少股东与管理者之间的代理成本,但同时,大股东的出现又带来了另一个代理问题:大股东与小股东之间的代理问题。从股权集中的现状、大股东出现的原因、大股东对公司的影响、大股东与小股东之间的利益冲突等方面,对近年来有关大股东治理和大股东与小股东之间代理问题的研究文献进行了综述,并对这一领域内基于我国上市公司的相关研究成果进行了回顾。     

股利政策的股东财富效应:来自中国股市的经验证据

国内现有文献关于上市公司股利政策的研究,主要集中在股利政策的信号传递理论、代理成本理论和影响因素三个方面,对上市公司通过股利分配实现股东高回报率的股东财富效应研究较少,而国外从税收政策变化和税负差异的角度研究股利政策财富效应并不适合中国的情况。为此,本文基于我国上市公司股权分置的特殊治理结构,以2003-2004年所有分配股利的上市公司为样本,实证检验了我国上市公司股利政策的股东财富效应。研究表明,分配现金股利使非流通股股东实现高回报率,流通股股东获得股票股利的较高短期收益率。     

共同所有权与控制权配置制度环境和治理效率

本文在分解的两权概念下,在兼顾股东与管理者、大股东与小股东之间代理问题的框架中,运用博弈论来分析不同制度环境下,这些利益主体的行为选择导致的治理问题,并对代表不同制度环境和不同所有权与控制权配置--英美模式、日德模式及东亚家族模式进行比较分析.我们得到的重要启示是风险制造人与风险承担人应该对应;决策控制权与决策管理权应该分离;应通过强化各类市场竞争、完善控制权机制来构建高效的公司治理自适应体系.     

机构投资者、代理成本与公司价值——基于随机前沿模型及门槛回归的实证分析

本文运用随机前沿模型,从代理成本的视角出发,实证检验了以证券投资基金为代表的机构投资者对公司价值的影响。研究结果表明,机构投资者持股对公司价值具有显著正面影响,但同时也表现出明显的“倒L”型特征。基于这一发现,进一步采用Hansen（1999）提出的面板门槛模型,测算了机构投资者对公司价值的影响发生显著结构性变化时的门槛水平,结果表明,当机构持股比例超过大约12%时,机构投资者对公司价值的提升作用会大幅减弱。同时,本文还发现,开放式基金相较于封闭式基金对公司价值的提升具有更加积极的作用。     

控股股东机会主义与非效率投资

控股股东对小股东的侵占已经成为公司治理研究中的主要问题,但控股股东与债权人的冲突还较少受到关注。通过建立模型,分析了控股股东的机会主义行为对中小股东与债权人的影响。研究结果表明:在无负债情况下,控股股东与小股东之间的信息不对称造成了企业过早及高风险的投资;在负债融资的情况下,由于收益函数性质的差别,股东与债权人之间的信息不对称是资产替代发生的根源。此外,为了获得控制权私利,控股股东大化自身价值的行为使得企业投资更早,投资的风险性更大,损害了中小股东与债权人的利益。     

股权分置改革后控股股东代理行为实证分析

本文借助所构建的控股股东代理行为指数,对股权分置改革后的控股股东代理行为进行了实证研究,研究结果表明:控股股东通过控制上市公司董事会影响上市公司的独立性,间接侵害上市公司和中小股东利益的行为比较普遍;大股东间的股权制衡对控股股东代理行为有抑制作用;增加独立董事比例、保障中小股东的投票权,减少隶属于控股股东单位的公司董事数量,建立适度规模的董事会有利于抑制控股股东代理行为。     

完善公司治理确实能抑制大股东的控制私利吗

本文采用流行的终极所有权方法对我国上市公司大股东控制私利进行了量化,并在此基础上采用2004和2005年1099家上市公司的样本数据检验了公司治理状况对于大股东控制私利的约束效果.我们的研究表明,公司治理整体上与大股东控制私利呈现倒U型的曲线关系,这种公司治理的总体效果是监事会治理和经理层治理两种治理机制对于大股东控制私利作用的叠加,除此之外的四种治理机制并没有起到约束大股东控制私利的显著作用.此外我们还发现,不同的公司特征也在不同程度上影响着大股东控制私利.     

控股股东代理的激励与侵占效应分析

控股股东与中小股东、债权人的代理冲突已经成为公司治理中代理问题的核心,而且也有相关文献实证分析了控股股东对企业绩效和企业价值的影响,但精确的定量理论分析仍较为缺乏.本文通过建立实物期权模型,理论研究了控股股东代理对企业投资政策选择和企业价值的影响.研究结果表明,随着控股股东现金流权的增加,企业价值增加,证明了控股股东存在正向的激励效应;随着控殷股东控制权和现金流权分离程度的加大.企业价值迅速降低,投资提前,该结论证明了控股股东具有负的侵占效应.     

政府行为、股权安排与公司治理的有效性——基于盈余质量视角的研究

本文以我国2000至2005年期间A股上市公司为研究对象,探讨在政府控制的特殊经济环境下,股权安排对会计盈余质量的影响,试图从会计契约角度对公司治理有效性做出新的诠析。本研究发现,控股股东对盈余质量的影响是非线性的,而第二大股东则对控股股东的壕沟防御效应起到有效的遏制作用。研究还发现,在政府行政干预力度加大和内部人利益侵害行为加剧的双重推动下,国有上市公司财务报告质量将进一步被降低。     

Effect of the board of directors and the audit committee on firm performance: a panel data analysis

This research examines the relationship between independent directors, the audit committee (AC), and firm performance, taking into account the impact of the chief executive officer’s powers and block shareholders. We use the maximum likelihood estimator, based on agency theory assumptions and cylindered panel data, to examine three models of firm performance. The results show that the independence of the board is reflected clearly by increased economic and equity performance of the firm. However, an AC that is fully independent or meets frequently is associated with lower firm performance. Unlike pension funds, institutional shareholders can be considered an effective control mechanism in the context of France. Our results development includes advanced explanations for market liquidity and shareholders’ portfolios. The study period ends before the European regulation on ACs came into effect in 2008. This allows for an appreciation of soft law in French corporate governance. It also lets us compare the data with the way firms operate their boards one decade later. The evidence provides useful guidelines on the supremacy of soft law in corporate governance and suggests that the composition and functioning of the board of directors should be moderated based on the firms’ context. The specificity of the cylindered panel data helps to better examine the impact of the board and AC’s independence and functioning in French corporate governance structure.     

管理者代理行为、公司过度投资与公司治理——基于企业生命周期视角的实证研究

通过建立企业生命周期新的划分指标,从企业发展的动态层面研究管理者代理行为与公司过度投资之间关系随企业生命周期的演变,并检验公司治理机制随企业生命周期的治理效果。结果表明,我国上市公司管理者代理行为随企业生命周期动态变化,其对公司过度投资的影响随企业生命周期发展不断减弱。不同公司治理机制的治理效果随企业生命周期也发生变化,其中董事长总经理兼任在成长阶段能够有效抑制公司过度投资,而独立董事在成熟阶段及大股东在衰退阶段均显著没有发挥应有的监督作用。成长阶段中的公司监事会能够对代理行为引致的过度投资起到显著的监督作用,而董事长总经理兼任则显著加剧代理行为引致的过度投资,成长阶段中管理层持股、成熟阶段中独立董事与外部机构持股以及衰退阶段中大股东均显著没有起到应有的治理作用。     

最终控制人性质、两权分离度与机构投资者持股——兼论不同类型机构投资者的差异

上市公司所有权与控制权的严重分离会影响其公司价值,进而会影响投资者的投资决策.本文以2004-2007年我国A股上市公司为研究样本,考察了上市公司两权分离状况对机构投资者总体和各类机构投资者持股决策的影响.研究发现,最终控制人所有权比例越高,两权分离度越小时,机构投资者(主要是证券投资基金)持股比例越高;而且两权分离度指标对机构投资者持股决策的影响在最终控制人为非国有性质的企业中表现更为明显.本文的研究结论表明.我国机构投资者总体上能够做到自我利益保护,在投资者保护方面发挥积极的作用,但是这种作用的发挥在各个类型机构投资者中存在显著差异.     

派自己人监督:上级股东与公司的代理成本

本文在细分出公司中与终极控制人关系最为密切的三类股东并将其界定为上级股东的基础上,集中考察了上级股东在降低第一类代理问题方面的治理功能。研究发现,更高的代理冲突下,公司对上级股东的参与有着更高的需求,而上级股东的介入也能够降低公司的代理成本。进一步的研究还表明,上级股东的上述监督行为符合收益最大化的理性行为框架。并且,如果按传统股权制衡研究的范式将所有非第一大股东视为一个整体,并不能观测到上述结果。     

Pre‐Going Private Ownership Around the World

Going private transactions are often highly leveraged, and give rise to potential agency conflicts among existing shareholders. But who exactly are those shareholders, and under what legal conditions are these transactions more likely to occur? We examine ownership structure prior to going private transactions in 33 countries around the world from 2002 to 2014. The data indicate strong and consistent evidence that pre‐going private ownership is characterized by higher institutional and corporate ownership. Family ownership lowers the probability of a public to private transaction. Stronger creditor rights increase the probability of going private, particularly for whole company and institutional buyouts.     

Shareholders ad Corprate Elections

Concern about the need to address the problem of conflicts of interest between management and shareholders has led to calls on shareholders to exercise their voting rights at the annual general meetings. It is argued here that the distribution of shareholding in the UK companies creates a complex pattern of incentives and disincentives for the holders of even larger blocks of shares to participate in the voting process. Whether the effort to participate is rewarded depends in an unpredictable manner on the distribution of large block shareholdings, and also on the percentage of the holders of small parcels who exercise their right to vote. A clear choice set is needed to arrive at a rational decision concerning the exercise of franchise, but that is not available.     

The governance role of multiple large shareholders: evidence from the valuation of cash holdings

This paper investigates the governance role of multiple large shareholders (MLS, henceforth), as evidenced by their impact on the valuation of cash holdings. For a sample of 2,723 firms from 22 countries, we find that the presence of MLS enhances the valuation of firms’ cash holdings. In particular, we show that the valuation of cash is positively associated with an even distribution of blockholders’ voting rights and with higher contestability of the largest shareholder’s control. We also show that the impact of MLS on the valuation of cash holdings is more pronounced for family-controlled firms, consistent with investors perceiving family owners as associated with greater expropriation risk. Overall, our results contribute to the literature on corporate governance by showing that MLS improve internal monitoring and moderate the agency costs of firms’ cash holdings.     

Corporate governance and stakeholder conflict

The stakeholder management literature is dominated by the ‘shareholder value’ and ‘inclusive stakeholder’ views of the corporation. Each views the governance problem in terms of inter-functional conflicts between stakeholder groups, such as between investors and managers or managers and employees, and rests on the assumption of an idealized corporate structure characterized by the separation of ownership from management. Our review of corporate governance and stakeholder conflict shows that such functional-based characterization is too simplistic and fails to account for important intra-functional conflict. Through a comparative review that considers managerial, stakeholder and family systems of governance, we demonstrate that, while the modality of conflict varies by system, substantial intra-functional conflict is endemic to each. We integrate the findings of the agency and comparative stakeholder theories of corporate governance to offer an authority-based framework with three different governance structures that offers complementary insights into stakeholder conflicts. Thus, our study highlights the important, but often neglected, intra-stakeholder type of conflict in various organizations and provides a basis for understanding their various manifestations and consequences under the different systems of governance.     

大股东控制下的资本投资与利益攫取研究

基于资本投资形成控制权收益的理论阐释,结合我国上市公司大股东攫取控制权收益的自利动机和市场风险分析,本文以2001-2005年沪深两市A股市场发生了非流通股交易的公司作为考察对象,从固定资产投资和股权投资两个方面对大股东的控制权收益攫取进行了实证研究,并进行了稳健性检验.研究发现,大股东不仅通过资本投资形成了控制权收益,而且资本投资规模越高,增加等量资本投资所攫取的控制权收益越低;尽管通过股权投资攫取控制权收益的隐秘性较高、成本较低,但由于增加了控制链的代理层级,控制性股东的收益占有程度也较低;大股东的自利性资本投资行为不仅挤占了中小投资者的共享利益,而且形成了从增加资本投资、形成更高控制权收益到损害企业价值的传导机制.根据经验结论,本文提出了相应的政策建议.