多元化经营对公司绩效的影响研究

本文假设企业规模在多元化经营与企业绩效的影响关系中具有中介作用,提出"多元化程度—公司规模—公司绩效"的变量模型;利用中国制造业上市公司2008～2010年的数据,通过横截面分析和面板数据分析对该模型进行实证检验。横截面分析结果表明,多元化经营对公司会计绩效产生负向影响,并且公司规模在其中具有部分中介作用,但对公司市场价值并不产生显著影响;面板数据分析结果显示,多元化经营对公司会计绩效和市场价值的影响都不显著。     

农业上市公司多元化经营对其绩效影响的实证研究

本文利用2004~2007年我国农业上市公司的数据,运用多元回归分析等方法,就农业上市公司多元化经营对公司绩效的影响进行实证研究。研究表明,农业上市公司的多元化程度与资产收益率和净资产收益率负相关,与收益率标准差系数正相关,即现阶段我国农业上市公司的多元化经营会降低公司绩效,并加大经营风险。     

多元化战略与公司绩效实证研究——基于沪深A股上市公司数据

19世纪80年代以来,多元化战略逐步被中国企业所重视,越来越多的学者开始关注多元化战略。我国上市公司中有着相当数量实施多元化战略的企业。本文以2005年至2007年沪深A股上市公司为样本,对多元化战略与公司绩效进行了实证研究。结果发现:上市公司多元化指标和公司绩效之间没有显著相关性。     

多元化战略与公司绩效实证研究——基于沪深A股上市公司数据

19世纪80年代以来,多元化战略逐步被中国企业所重视,越来越多的学者开始关注多元化战略。我国上市公司中有着相当数量实施多元化战略的企业。本文以2005年至2007年沪深A股上市公司为样本,对多元化战略与公司绩效进行了实证研究。结果发现：上市公司多元化指标和公司绩效之间没有显著相关性。     

公司治理、绩效持续性与融资成本

公司治理对公司(财务)绩效有重要的影响,然而公司治理对绩效持续性的影响研究较少。绩效持续性同公司的融资成本息息相关。理论分析发现良好的公司治理可以有效地促进公司绩效持续性,并且后者减轻了公司的融资成本负担。同时利用2008—2015年我国A股上市公司的数据,实证分析公司治理对绩效持续性的影响,并验证绩效持续性对融资成本的作用。实证分析发现,董事会的独立性、CEO和董事长的角色分离以及股权集中度皆促进了绩效持续性,绩效持续性有效地降低了公司的融资成本。此外,利用稳健性检验进一步验证了此结论的可靠性。     

多元化经营与企业绩效关系的实证研究——以医药生物制品类上市公司为例

多元化经营对企业绩效的影响至今未有定论。许多理论文献认为,多元化经营的成本与收益并存,而实证结果却不完全一致。本文分析了2004年65家医药制造业上市公司多元化经营与企业绩效的关系,发现多元化经营与企业绩效之间虽然负相关性不显著,但多元化经营程度不同的企业组之间绩效差异显著;同时,我们也发现多元化经营程度与资产规模、负债水平以及高管层报酬之间没有显著关系,而负债水平与总资产收益率显著负相关,高管层报酬与总资产收益率、息税前利润率、资产规模、负债水平显著正相关。     

多元化经营、研发投入与公司绩效

本文以2002-2005年披露研发投入信息的上市公司为研究对象,从理论和实证两方面对多元化经营与公司研发投入的关系以及多元化经营和研发投入对公司绩效的影响进行了研究.结果发现,目前我国上市公司披露的R&D支出普遍较低,多元化经营公司较专业化公司投入更少的资金于R&D项目,但多元化经营折价并不是由于多元化公司投入较低的R&D投资引起.     

现代财务理论与战略管理理论的冲突和发展

本文分析了现代财务理论与战略管理理论之间的矛盾,并对目前已存在的关于公司多元化、绩效和风险的实证研究进行了讨论。     

现代财务理论与战略管理理论的冲突和发展

本文分析了现代财务理论与战略管理理论之间的矛盾,并对目前已存在的关于公司多元化、绩效和风险的实证研究进行了讨论.     

集团战略异质性、子公司战略地位与控制方式

本文以2004 ～ 2008年中国隶属于集团的A股上市公司为研究样本,从集团和子公司两个层面分别考察了集团战略异质性和成员公司的战略地位与控制方式的关系及其对成员公司绩效的影响,并进行理论分析和实证检验.研究发现,在集团对成员公司采取完全控制的情况下,集团选择横向和相关多元化战略要比无关多元化战略成员公司绩效好.集团选择完全控制或完全分离的控制方式都不如选择不完全控制带给成员公司的绩效好.随着成员公司战略地位的提升,集团越是采用完全分离或完全控制的方式带给成员公司的影响越负面,绩效越差.     

转轨经济时期我国企业多元化经营的价值分析

学术界对企业多元化的争论一直没有停止过,本文通过对企业多元化经营价值和成本的深入分析,阐述了中国企业多元化动因与我国国有企业的体制相关,认为多元化经营会损害企业价值。为提升企业的价值,集中化经营是最好的选择。     

Firm-diversification effects on performance as measured by tobin's q

The performance effects of firm diversification remain unclear despite a large body of prior research that has yielded mixed results due to differing performance measures, diversification measures, samples and time periods. The objective of this research is to offer further information by using Tobin's q to capture performance effects and Rumelt's related ratio as the diversification measure. The empirical results reveal no significant findings to relate diversification and performance. Given that the sample is composed of very large firms, the implication is that, at least for such large firms whose stock is likely held in well-diversified portfolios, firm-diversification strategies are unlikely to yield superior performance.     

Market conditions and the effect of diversification on mutual fund performance: should funds be more concentrative under crisis?

This paper investigates the non-monotonic and non-linear effect of diversification on mutual fund performance. We apply a frontier-based efficiency measure, the stochastic frontier approach, to estimate fund efficiency and the benefit of diversification. The empirical results indicate that concentration strategy may not be appropriate for fund managers, and the benefit of diversification disappears or negatively affects performance when a fund holds too large a number of different stocks. Moreover, this paper examines whether market conditions moderate the relation between diversification and fund performance. The result shows that the benefit of diversification increases within low market return, high market volatility, and financial crisis, implying that the number of stocks needed to achieve a well-diversified portfolio increases under such market conditions.     

“多元化折价”还是“多元化溢价”——研究方法与现有结论

在国外有关企业多元化的研究中,验证多元化对企业经营绩效影响的文献占有非常重要的地位。文章建立了一种更为开阔的视野,旨在对这部分文献进行全面系统的回顾和评述,以期对中国企业经营战略选择以及国内有关企业多元化的研究提供借鉴。首先总结了多元化和企业经营绩效的主要度量方法,然后按照时间顺序将有关多元化对企业经营绩效影响的文献分为三个阶段,并分别对每个阶段的基本研究方法和主要结论进行了分析和评论。     

Geographic and Industrial Diversification of Developing Country Firms*

ABSTRACT This paper examines the impact of the industrial and geographical diversification activities of developing country firms on their performance, and draws attention to the unique attributes of these firms and of the circumstances under which their diversification activities take place. The empirical analysis is based on data from 345 developing country firms. The findings suggest significant and positive association between industrial and geographic diversification and performance, and considerable variation of these relationships across developing regions and diversification strategies.     

商业银行多元化经营对绩效和风险的影响研究--基于53家银行的面板分析

本文运用2003-2013年间我国53家商业银行的面板数据,通过建立多元化风险模型,对商业银行收入结构多元化、经营绩效以及风险的关系进行了系统分析。得出结论：规模较大的银行在专业型多元化经营业务成熟的基础上,转而发展综合型多元化经营业务,有利于银行绩效提升,但必须注重对风险的把控;而规模较小的商业银行因受地域、规模等因素的限制并不适合开展综合型多元化经营业务,应在主营业务发展充分的基础上,以发展专业型多元化经营业务为主。最后,根据实证结果提出相关的对策建议。     

Is there a diversification “cost” of Shari’ah compliance? Empirical evidence from Malaysian equities

Islamic equity portfolios work with a smaller investment universe given the filtering of non-Shari’ah compliant stocks. It has been theoretically argued that this culminates in suboptimal portfolio diversification, which in turn adversely affects risk-adjusted returns. We offer empirical evidence that such a conceived portfolio diversification “penalty” is far from a foregone conclusion, at least empirically. Our results tend to indicate that Islamic portfolios are not invariably handicapped in terms of portfolio diversification. We also explored dimensions that may account for differences in the relative investment performance between Islamic and conventional portfolios, such as portfolio constraints, short selling and market conditions. We believe this paper is among the first to apply substantial empirical analysis specifically with respect to the portfolio diversification perspective on Islamic equity investments.     

Diversification strategy,CEO management style and firm performance: an application of Heckman’s two-stage method

This paper aims to explore whether CEOs’ management style as agents or as stewards, which depends on their psychological and situational characteristics, moderates the effect of the diversification strategy on firm performance. After applying Heckman’s two-stage method to control econometrically for endogeneity bias in empirical work, results demonstrate that the relationship between diversification and profitability varies significantly depending on the management style of the diversifying CEO.     

The mode of corporate diversification: Internal ventures versus acquisitions

This study investigates empirically the underlying motives for selecting the mode of corporate diversification and attempts to match the form of capital investments with a corresponding theoretical rationale for diversification. The empirical results seem to support both the transaction-costs rationale for diversification and the motive that arises from a firm's prior experience with each form of capital investment. However, the empirical findings are inconsistent with the explanation that is based on the owner-manager conflict of interest.     

Causes and effects of multimarket activity from theory to empirical analysis

In this paper some of the results emerged in the empirical literature on diversification are put into perspective against the background of a simple integrative model of multiproduct firms. By letting diversification strategies depend on the simultaneous play of four factors (demand relationships and technological links between goods, collusion within a market and across markets), the latter provides an illustrative framework which is useful to discuss how effectively the issue of ambiguous findings has been tackled in applied works. In some cases scholars have devoted substantial effort in order to build tests which can successfully discriminate among the different views on the causes and effects of diversification, while in other circumstances empirical investigations have been conducted with much less care. Other then criticising some of the methods used in the past, the paper provides a number of suggestions that can help guiding future empirical work on corporate diversification. Copyright © 2004 John Wiley & Sons, Ltd.