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14#
发表于 2011-7-13 15:03
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Currency:
You just value each bond in its respective currency then translate into the main currency.
Let's say you want to do a $ for Yen swap with notional principal of $1,0000,000 for 2 years and semiannual payments. Current exchange rate is Y120 to $1. Let's say $ is paying fixed at 6.0% and Y is paying floating, and at initiation, 180 day rate in Japan is 5.5%.
90 days into it, the current interest rate structure is this:
USA
90 day - 4.5%
270 day - 5.5%
450 day - 6.5%
630 day - 7.0%
Japan
90 day - 4.0%
270 day - 5.0%
450 day - 6.0%
630 day - 6.5%
And the current exchange rate is Y110 to $1. What is the value to the receive Yen?
Ok first let's value receive $. This equivalent to buying a fixed rate bond in the USA and issuing a floating rate bond in Japan.
So semiannual payments at 6.0% on $1,000,000 means $30,000 semi annual payments with the $1,000,000 notional principal returning at the final payment. So here is the timeline of when you receive payments:
In 90 days $30,000
In 270 days $30,000
in 450 days $30,000
in 630 days $1,030,000
You discount the above payments in the respective $$$ rates above. So at 90 days, you take 4.5%*90/360 = 1.125% and at 270 days, you take 5.5%*(270/360) = 4.125% and so on.
When you discount the above payments add all that up, you should get $1,003,781
Now the receive Yen bond. First let's figure out the notional principal in Yen. The original exchange rate was Y120 to $1 on $1,000,000 notional principal so that equals Y$120,000,000. The Yen is floating with the first 180 day rate at 5.5% so you value this same way you value floating rate bond in my first example.
The first interest payment = 5.5%*(180/360) = 2.75%*$120,000,000 = Y3,300,000
But you also receive the notional principal back at this point so here is the timeline of cashflows
In 90 days receive Y123,300,000
The 90 day rate is currently 4.0% in Japan. You need to multiply by 90/360 though which equals 1.0%
Value of floating rate Yen bond = 123,300,000/1.01 = 122,079,208
Now convert back at the current exchange rate of Y110 to $1.
Y122,079,208/110 = $1,109,811
Now subtract the two
$1,109,811 - $1,003,781 = $106,030 |
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