股权结构、动态内生性与公司代理成本

本文以716家上市公司为样本,在动态内生性的框架下,运用动态面板的系统GMM估计方法,同时考虑了三种内生性,以动态性的视角,不仅研究了当期股权结构对当期代理成本的影响,还研究了股权结构与代理成本间的跨时期相互作用。通过研究,我们发现：（1）不仅当期股权结构对当期代理成本有影响,而且前期股权结构也对当期代理成本有影响,股权结构对代理成本的影响有持续期;（2）前期代理成本对当期股权结构有反馈效应;（3）股权结构与代理成本间存在动态内生性。     

两类代理成本、债务治理及其可观测绩效的研究——来自我国中小上市公司的经验证据

在改进国内学者对债务治理效应实证研究不足的基础之上,我们对深圳证券交易所中小企业板上市的102家公司2004—2006年三年数据共306个观测值进行实证分析发现:(1)我国中小上市公司债务对显性代理成本具有显著抑制作用(表明债务客观上存在一定的治理效应),而对隐性代理成本却无抑制作用或者抑制作用不显著,因此,无法形成债务治理可观测的债务治理财务绩效;(2)短期负债主要抑制显性代理成本,而长期负债主要抑制隐性代理成本。我国中小上市公司债务期限结构极其不平衡是债务治理整体效应不显著的一个重要原因;(3)虽然我国中小上市公司债务治理效应难以形成其可观测的财务绩效,但由于财务杠杆效应的原因,存在可观测的债务综合财务绩效。     

Optimal Refunding Strategies, Transaction Costs, and the Market Value of Corporate Debt

The primary purpose of this paper is to consider both qualitatively and quantitatively the effects of refunding transaction costs and interest rate uncertainty on optimal refunding strategies and the market value of corporate debt. A dynamic model of corporate bond refunding with transaction costs is developed that simultaneously solves for the optimal refunding strategy, the value of the refunding call option, the value of the bond liability to the firm, and the market (investor) value of the fixed-rate contract. We provide examples in which the price of the callable bond does exceed the call price, and we examine whether or not typical levels of refunding costs are sufficient to explain the magnitude and duration of frequently observed premiums on callable corporate bonds.     

融资约束、代理成本对企业R&D投资的影响——基于我国上市公司的经验证据

本文以2009-2012年中国上市公司年报数据为研究样本,基于欧拉方程投资模型,采用Kumbhakar and Parmeter(2009)提出的双边随机边界法实证检验融资约束和代理成本对企业R&D投资的影响。结果发现:融资约束与R&D投资显著负相关,代理成本与R&D投资显著正相关。即融资约束导致R&D投资不足,代理成本导致R&D投资过度。进一步分析发现:融资约束使上市公司R&D投资的绝对值(相对值)整体上较最优水平低42.41%(43.27%),代理成本使上市公司R&D投资的绝对值(相对值)整体上较最优水平高22.48%(21.73%),二者抵消后最终表现为净低于最优水平的19.93%(21.54%)。这种差异在不同地区、行业、公司性质及年度里略有不同。由此可见,我国上市公司尚未陷入R&D投资的"加速化陷阱",仍有必要加大R&D投资。论文最后针对研究中发现的问题提出了相应的对策和建议。     

The Choice of Call Provision Terms: Evidence of the Existence of Agency Costs of Debt

An examination of the provisions of bond issues reveals that most bonds prohibit firms from calling the issue during the initial years, after which time the bond can be called at the option of the firm. A substantial number of firms, however, also reserve the right to call the issue during this initial period for purposes other than refinancing at a lower coupon rate. The additional flexibility which accompanies the option of early redemption can be used to reduce the agency costs of debt associated with future investment opportunities, informational asymmetry, and the risk incentive problem. Using a sample of newly issued bonds, statistical tests are performed to show that there are, in fact, differences between firms which do and do not reserve the right of early redemption. This paper shows that these differences provide empirical evidence which is consistent with the hypothesis that firms use the option of early redemption to reduce agency costs.     

Agency Costs and Ownership Structure

We provide measures of absolute and relative equity agency costs for corporations under different ownership and management structures. Our base case is Jensen and Meckling's (1976) zero agency-cost firm, where the manager is the firm's sole shareholder. We utilize a sample of 1,708 small corporations from the FRB/NSSBF database and find that agency costs (i) are significantly higher when an outsider rather than an insider manages the firm; (ii) are inversely related to the manager's ownership share; (iii) increase with the number of nonmanager shareholders, and (iv) to a lesser extent, are lower with greater monitoring by banks.     

Corporate Diversification and the Cost of Debt

The Journal of Real Estate Finance and Economics - This paper investigates whether corporate diversification by property type and by geography reduces the costs of debt capital. It employs...     

Agency Costs of Overvalued Equity

I define and analyze the agency costs of overvalued equity. They explain the dramatic increase in corporate scandals and value destruction in the last five years; costs that have totaled hundreds of billions of dollars. When a firm's equity becomes substantially overvalued it sets in motion a set of organizational forces that are extremely difficult to manage—forces that almost inevitably lead to destruction of part or all of the core value of the firm. WorldCom, Enron, Nortel, and eToys are only a few examples of what can happen when these forces go unmanaged. Because we currently have no simple solutions to the agency costs of overvalued equity this is a promising area for future research.     

Corporate Capital Structure,Agency Costs,and Ownership Control: The Case of All-Equity Firms

This paper provides evidence that all-equity firms exhibit greater levels of managerial stockholdings, more extensive family relationships among top management, and higher liquidity positions than a matched sample of levered firms. Further, top managers of all-equity firms with family involvement in corporate operations have greater control of corporate voting rights than managers of all-equity firms without family involvement. These findings are consistent with the interpretation that managerial control of voting rights and family relationships among senior managers are important factors in the decision to eliminate leverage.     

Bank Debt and Corporate Governance

In this paper, we investigate the disciplining role of banksand bank debt in the market for corporate control. We find thatrelationship bank lending intensity and bank client networkhave positive effects on the probability of a borrowing firmbecoming a target. This effect is enhanced in cases where thetarget and acquirer have a relationship with the same bank.Moreover, we utilize an experiment to show that the effectsof relationship bank lending intensity on takeover probabilityare not driven by endogeneity. Finally, we also investigatereasons motivating a bank's informational role in the marketfor corporate control.     

Corporate Governance and Agency Conflicts

I investigate whether corporate governance is associated with the level of agency conflicts in firms. I employ exploratory principal components analysis on 22 individual governance variables to obtain seven factors that represent the different dimensions of governance for a firm. I measure the level of agency conflicts in firms based on seven proxies for agency conflicts used in the literature. I find that firms with greater agency conflicts have better governance mechanisms in place, particularly those related to the board, audit committee, and auditor. I also find that the composition and functioning of the board, the independence of the auditor, and the equity‐based compensation of directors are significantly associated with firm performance, but primarily for firms with high agency conflicts. Overall, the results support the theory that the existence and role of various governance mechanisms in a firm are a function of the level of agency conflicts in the firm.     

Corporate Debt Structure and the Financial Crisis

We present a DSGE model where firms optimally choose among alternative instruments of external finance. The model is used to explain the evolving composition of corporate debt during the financial crisis of 2008–09, namely, the observed shift from bank finance to bond finance, at a time when the cost of market debt rose above the cost of bank loans. We show that the flexibility offered by banks on the terms of their loans and firms' ability to substitute among alternative instruments of debt finance are important to shield the economy from adverse real effects of a financial crisis.     

Board Ties and the Cost of Corporate Debt

We examine the impact of firms’ board ties on bond yield spreads. Prior literature associates board connectedness with improved access to resources due to visibility and reputation arising from greater board capital. Consistent with the board capital hypothesis, we find that better connected firms are associated with greater media coverage and more ties to financial firms. Additionally, greater connectedness is linked with statistically and economically significant lower bond yield spreads, especially for firms with high information asymmetry. Our main result appears robust and includes significant negative (positive) changes in yield spreads to announcements of additions (departures) of highly connected directors.     

Executive Compensation and the Maturity Structure of Corporate Debt

Executive compensation influences managerial risk preferences through executives' portfolio sensitivities to changes in stock prices (delta) and stock return volatility (vega). Large deltas discourage managerial risk‐taking, while large vegas encourage risk‐taking. Theory suggests that short‐maturity debt mitigates agency costs of debt by constraining managerial risk preferences. We posit and find evidence of a negative (positive) relation between CEO portfolio deltas (vegas) and short‐maturity debt. We also find that short‐maturity debt mitigates the influence of vega‐ and delta‐related incentives on bond yields. Overall, our empirical evidence shows that short‐term debt mitigates agency costs of debt arising from compensation risk.