电子科技大学学报(社会科学版)
電子科技大學學報(社會科學版)
전자과기대학학보(사회과학판)
JOURNAL OF UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA(SOCIAL SCIENCES EDITION)
2014年
2期
34-38
,共5页
修正久期%凸性%零息债券%债券组合
脩正久期%凸性%零息債券%債券組閤
수정구기%철성%령식채권%채권조합
modified duration%convexity%zero-coupon bond%bond portfolio
通过分析比较债券的麦考利久期和修正久期在概念和计算方法上的差异,指出修正久期才是债券和债券组合风险管理的核心工具,当利率变化幅度较大的情况下,债券的凸性应该被纳入以改善修正久期的业绩。由于附息债券或债券组合均可被分解为一系列零息债券的组合,根据“组合收益率是组合中各成份证券收益率的加权平均”的基本原理,给出了一种基于零息债券修正久期和凸性的附息债券以及债券组合修正久期和凸性的计算方法,并通过实例阐述了债券修正久期和凸性的计算及应用。
通過分析比較債券的麥攷利久期和脩正久期在概唸和計算方法上的差異,指齣脩正久期纔是債券和債券組閤風險管理的覈心工具,噹利率變化幅度較大的情況下,債券的凸性應該被納入以改善脩正久期的業績。由于附息債券或債券組閤均可被分解為一繫列零息債券的組閤,根據“組閤收益率是組閤中各成份證券收益率的加權平均”的基本原理,給齣瞭一種基于零息債券脩正久期和凸性的附息債券以及債券組閤脩正久期和凸性的計算方法,併通過實例闡述瞭債券脩正久期和凸性的計算及應用。
통과분석비교채권적맥고리구기화수정구기재개념화계산방법상적차이,지출수정구기재시채권화채권조합풍험관리적핵심공구,당리솔변화폭도교대적정황하,채권적철성응해피납입이개선수정구기적업적。유우부식채권혹채권조합균가피분해위일계렬령식채권적조합,근거“조합수익솔시조합중각성빈증권수익솔적가권평균”적기본원리,급출료일충기우령식채권수정구기화철성적부식채권이급채권조합수정구기화철성적계산방법,병통과실례천술료채권수정구기화철성적계산급응용。
By analyzing and comparing the difference on concept and calculation between macaulay duration and modified duration of bond, this paper points out that it is modified duration that plays an important role in bond or bond portfolio risk management, for large yield changes convexity should be added to improve the performance of the modified duration. Because coupon bond or bond portfolio can be decomposed into a series of zero-coupon bond, we propose a methodology to calculate the modified duration and convexity of coupon bond or bond portfolio based on the principle of that portfolio return is the weighted average return of various components in that portfolio. An example is also involved for illustration of calculating process of modified duration and convexity and their application.