Session 4: Economics: Economics for Valuation Reading 19: Foreign Exchange Parity Relations
LOS i: Define and discuss the international Fisher relation.
George Canyon, CFA, an international trader and analyst with Canyon Trading, wants to use the international Fisher relation to determine his trading strategies. In analyzing expected inflation rates, he wants to correlate the expected rates to nominal interest rates. In doing so, he discovers that the international Fisher relation could approximate nominal interest rates by:
A) |
multiplying real interest rates by expected inflation rates. | |
B) |
subtracting real interest rates from expected inflation rates. | |
C) |
adding real interest rates to expected inflation rates. | |
The nominal interest rate, r, is the compounded sum of the real interest rate, real r, and the expected rate of inflation, E(i), over an estimation horizon. The domestic version of the Fisher relation is stated as:
Exact methodology: (1 + r) = (1 + real r) × (1 + E(i))
Where: r = nominal interest rate real r = real interest rate E(i) = expected inflation
Note that for the exact methodology, 1 must be added to each rate before they are multiplied. The relationship can also be approximated by adding real interest rates to expected inflation rates: linear approximation: r = real r + E(i)
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