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中国管理科学 ›› 2010, Vol. 18 ›› Issue (4): 21-27.

• 论文 • 上一篇    下一篇

抵押贷款证券的效用无差别定价

叶文忠1, 杨招军2, 郑毅3   

  1. 1. 湖南科技大学商学院, 湖南湘潭411201;
    2. 湖南大学金融与统计学院, 湖南长沙410079;
    3. 桂林电子科技大学软科学研究院, 广西桂林541004
  • 收稿日期:2009-08-11 修回日期:2010-07-04 出版日期:2010-08-30 发布日期:2010-08-30
  • 作者简介:叶文忠(1969- ),男(汉族),四川广安人,湖南科技大学商学院教授,博士,研究方向:技术创新、金融工程.
  • 基金资助:

    国家自然科学基金资助项目(70971037)

Utility Indifference Pricing of Mortgage-Backed Securities

YE Wen-zhong1, YANG Zhao-jun2, ZHENG Yi3   

  1. 1. Business School, Hunan University of Science and Technology, Xiangtan 411201, China;
    2. School of Finance and Statistics, Hunan University, Changsha 410079, China;
    3. Academy of Soft Science, Guilin University of Electronic Technology, Guilin 541004, China
  • Received:2009-08-11 Revised:2010-07-04 Online:2010-08-30 Published:2010-08-30

摘要: 当前抵押贷款证券化产品定价方法主要是现金流贴现取平均的方式,其本质是一种风险中性定价,忽视了不同投资者的风险态度在资产定价中的决定作用。本文运用Hodges and Neuberger(1989)提出的效用无差别定价原理,提出抵押贷款证券化衍生产品定价的一种新的方法。假设投资者具有对数消费效用,本文得到了易于实现的抵押贷款证券化产品定价计算公式,给出了Monte Carlo数值计算方法和应用举例,并进行了比较静态分析。

关键词: MBS定价, 随机利率模型, 最优停时, 效用无差别定价, Monte Carlo模似

Abstract: The mainstream methods take the mean of disco unted cash flows as the valuation of mortgage-backed securities(M BS),which is actually a risk-neutral price and neglects the significant effect of investors risk at titude in asset pricing.This paper develops a new approach to the valuation of mort gage-backed securities by way of utility indif ferent prices developed by Hodges and Neuberger(1989).Assuming investors have logarithm consumption utility,the paper obtains a formula to value MBS,which is easy to implement.The paper presents both Monte Carlonumeric algorithm and example.Some static analyses are shown in the end.

Key words: MBS pricing, stochastic rate model, optimal stopping time, utility indifference prices, Monte Carlo simulation

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