别为2.6%、2.7%、2.8%和3.1%,并且上一个利息交换日观察到的3个月期LIBOR利率(连续复利)为2.8%,请分别用债券组合的方法及FRA的方法计算该互换多头的价值。债券组合法:147103.2%−×2.6%3.2%−×2.7%3.2%−×2.8%3.2%−×3.1%Ve=++++12e12e12(1)e12fix4444=1.006075(亿)1−×2.6%=+2.8%×0.25−12Vefl(11)e=1.004845(亿)=−=−因此IRS多头的价值为VVflVfix0.00123亿FRA分解法:3.2%首先将互换利率转化为连续复利的形式:r=+4ln(1)=3.187%k48Copyright©2011Chen,Rong&Zheng,Zhenlong《固定收益证券》参考答案陈蓉郑振龙北京大学出版社412.7%×−2.6%×1212r×==2.733%140.25742.8%×−2.7%×1212求远期利率:r×==2.933%470.251073.1%×−2.8%×1212r×==3.8%7100.251−×2.6%=×82.8%××0.25−3.187%0.2512=−求FRA价值:1个月后VFRA10()eee97265.84−×2.7%=×82.733%0.25××−3.187%0.2512=−4个月后VeeeFRA10()113318.67−×2.8%=×82.933%0.25××−3.187%0.2512=−7个月后VeeeFRA10()6295110−×3.1%=×83.8%0.25×−3.187%×0.2512=10个月后VeFRA10()ee150651.8≈−故互换总价值为V互换=-122883.6()美元0.00123亿因此两种方法计算出的IRS价值是相同的。9Copyright©2011Chen,Rong&Zheng,Zhenlong