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# Covered Interest Arbitrage

Quotes for the US dollar (US\$) and Thai Baht (Bt) are as follow:

Spot contract midpoint S0Bt/US\$=Bt 24.96/US\$
1-year forward midpoint F0Bt/US\$=Bt25.64?US\$
1-year Eurodollar interest rate I\$=6.125%per year

a) Your newspaper does not quote 1-year Eurocurrency interest rates on thai baht. Make your own estimate of iBt.

b) Suppose that you can trade at the prices for S0Bt/US\$ , F0Bt/US\$ and I\$ just given and that you can also either borrow or lend at a Eurocurrency interest rate of iBt = 10% per cent. Based on a \$1 million initial amount, how much profit can you generate through covered interest arbitrage ?

c) Outline and explain how the markets are likely to respond to the transactions you propose.

#### Solution Preview

Please see the attached file for details:

Quotes for the us dollar(US\$)and Thai Baht(Bt) are as follow:

Spot contract midpoint S0Bt/US\$=Bt 24.96/US\$
1-year forward midpoint F0Bt/US\$=Bt25.64/US\$
1-year Eurodollar interest rate I\$=6.125%per year

a)     Your newspaper does not quote 1-year Eurocurrency interest rates on thai baht. Make your own estimate of iBt.

Using the interest rate parity condition (no covered interest arbitrage)
Forward rate / Spot rate = (1+ Thai baht eurocurrency interest rate) / (1+ Euro dollar interest rate)
or 25.64 / 24.96 = (1+ Thai baht eurocurrency interest rate) / (1+ 6.125%)
or Thai baht ...

#### Solution Summary

Answers questions on covered interest arbitrage etc.

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