关于人民币远期定价权问题的研究

本文通过静态及动态的两类模型对人民币远期定价权问题进行了研究。结果表明，我国人民币远期市场尚未摆脱境外NDF市场的影响，NDF市场仍是影响人民币远期定价的主要因素。而2005年8月以来我国外汇市场推出的各项改革措施，使得基于利率平价的定价机制开始在人民币利率的决定中发生作用；我国人民币远期市场定价机制尚未实现从基于预期的定价机制向利率平价的转变，我国银行间人民币远期市场尚未掌握人民币远期定价的主导权，但基于利率平价的人民币远期定价机制在人民币远期定价中所起的作用越来越显著。在此基础上，本文提出了相应的政策建议。     

经理股票期权与会计信息失真

本文分析了经理股票期权的激励原理,对它的理论假设提出了质疑,从而揭示了这一激励机制产生偏差的根本原因,并从本源上探寻了经理股票期权与会计信息失真的联系。     

GAME THEORETIC MODELS OF MIXED OLIGOPOLY

Abstract. In this paper we review various models that have been proposed for the study of mixed oligopoly, that is markets in which private and public firm compete on equal basis using only market instruments.     

关于期权薪酬会计计量方法的思考

股票期权薪酬计量方法的选用一直以来都存在争议,采用不同的计量方法会直接影响到股票期权会计信息的真实性和透明度。本文通过对分别运用内在价值法、最小价值法和公允价值法中的B-S模型和二叉树模型对期权薪酬价值的计算分析,来说明何种计量方法能最有效地实现期权薪酬核算的目的。     

基于期权定价理论的所有者与债权人代理问题分析

所有者和债权人之间的代理关系是现代公司治理的重要要素,如何理解和处理二者之间的关系成为社会关注的核心。本文从期权角度对所有者与债权人之间的代理关系进行新的理解,并分别介绍了无风险套期保值、B-S期权定价理论模型的具体运用以及保护债权人利益的具体措施。     

用期权定价模型评估企业并购的价值

针对传统企业并购价值评估模型的局限性,本文从期权的角度阐述了企业并购的期权特性,指出企业并购实质上相当于取得了一个看涨期权;并以连续支付红利的美式期权定价理论为基础,建立了企业并购价值评估的期权定价模型。最后,通过实例论述了如何应用该模型来评估企业并购价值,对实践中企业并购价值的合理确定具有重要的指导意义。     

试论实物期权及其在会计实证研究中的运用

实物期权是以实物资产为标的物的未来选择权。实物期权的思想目前已被西方的学者广泛地用于会计的 实证研究当中,然而国内却鲜有学者涉足这一领域。因此本文试就此做出简要的介绍,以期起到抛砖引玉的作用。     

Tax Effects in a Model of Product Differentiation: A Note

We investigate how unit (or specific) tax and ad valorem tax affect equilibrium location choice in a model of product differentiation, which includes Hotelling (linear-city) and Vickrey-Salop (circular-city) spatial models as special cases. We find that neither tax affects equilibrium location patterns as long as each firm has the same production cost. Two taxes can yield different location patterns under cost heterogeneity among firms.     

Giffen goods and market making

Summary. This paper shows that information effects per se are not responsible for the Giffen goods anomaly affecting traders demands in multi asset noisy, rational expectations equilibrium markets. The role that information plays in traders strategies also matters. In a market with risk averse, uninformed traders, informed agents have a dual trading motive: speculation and market making. The former entails using prices to assess the effect of error terms; the latter requires employing them to disentangle noise traders demands within aggregate orders. In a correlated environment this complicates the signal extraction problem and may generate upward sloping demand curves. Assuming (i) that competitive, risk neutral market makers price the assets or that (ii) uninformed traders risk tolerance coefficient grows unboundedly, removes the market making component from informed traders demands rendering them well behaved in prices.Received: 30 April 2002, Revised: 3 December 2003, JEL Classification Numbers: G100, G120, G140.Support from the Barcelona Economics Program of CREA and the Ente per gli Studi Monetari e Finanziari Luigi Einaudi, are gratefully acknowledged. I thank Anat Admati, Jordi Caballé, Giacinta Cestone, and Xavier Vives for useful suggestions. The comments provided by the Associate Editor and an anonymous referee greatly improved the papers exposition.     

Market clearing and derivative pricing

Summary. We develop a method of assigning unique prices to derivative securities, including options, in the continuous-time finance model developed in Raimondo (2001). In contrast with the martingale method of valuing options, which cannot distinguish among infinitely many possible option pricing processes for a given underlying securities price process when markets are dynamically incomplete, our option prices are uniquely determined in equilibrium in closed form as a function of the underlying economic data.Received: 14 April 2003, Revised: 7 January 2004, JEL Classification Numbers: G13, D52.This paper is dedicated to Birgit Grodal, whose strength and character we greatly admire. We are very grateful to Darrell Duffie, Steve Evans, Botond Koszegi, Roger Purves, Jacob Sagi, Chris Shannon, Bill Zame and an anonymous refereee for very helpful discussions and comments. The work of both authors was supported by Grant SES-9710424, and Andersons work was supported by Grant SES-0214164, from the National Science Foundation.