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标题: BDY to HPY calculation [打印本页]

作者: wonderfuldream 时间: 2011-7-13 14:47 标题: BDY to HPY calculation

I"m having trouble figuring out converting BDY to HPY

The schweser book states that you can convert BDY to HPY by
RBD(days/360) / 1 - RBD (days/360)

So for an example
Tbill priced at 98,500
Face Value: 100,000
120 Days until maturity

RBD is calculated as 1500 / 100,000 * 360 / 120 = 4.5%

Now the HPY calculation from this 100,000 / 98,500 = 1.5228%

but when I try to convert BDY to HPY as stated in the book
RBD(days/360) / 1 - RBD (days/360), I get 4.713%

Am i missing something from this calculation?

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