According to the uncovered interest rate parity, in 12 months, the JPY/USD exchange rate would most likely be:
Did someone found it weird that the solution seems to use the covered interest rate parity instead of the uncovered formula? I still didn’t get exactly the difference between these two…
There is no formula for _ covered interest rate parity_, nor a formula for _ uncovered interest rate parity_.
There is a formula for _ interest rate parity _. No adjective.
The only difference between covered interest rate parity and uncovered interest rate parity is that the former has a security (a forward or futures contract) that ensures that that formula will hold, while the latter does not. But the formula doesn’t depend on having that security or not; the formula’s the formula.
It’s confusing, because Schweser material seems to differentiate between these two…
According to pg 264 (2017 edition), it shows for each one a formula:
Covered interest arbitrage: F = ((1 + Ra * (days/360)) / (1 + Rb * (days/360))) * So
Uncovered interest rate parity: E(%dS) = Ra - Rb
The application of both in the question above gives us slightly different results - not enough to deviate from the other two alternatives, but still, it is not the same number…
It really doesn’t make sense this exercise, I mean, also the way they explain the solution…
The same for question 15: covered interest parity, from the theory (even Schweser notes): E(%DeltaS) A/B = Ra -Rb
I would solve it by looking at the difference in interest rates and then this is the chance in the spot rate. They solve it like: Spot x (1+Ra)/(1+Rb)
And what makes me laugh is that in the solution they make a reference on the page of the book where they solved the exercise with the first formula, not the one they used (and leads to different results!)