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FRM Part I · FRM Exam Part I · Interest Rates

Continuously compounded spot rates are 4% for 1 year and 5% for 3 years. What is the implied continuously compounded forward rate between year 1 and year 3?

The forward rate is 5.5%. With continuous compounding, the forward rate is the difference in total accumulated returns (15% − 4% = 11%) divided by the two-year forward period, which gives 5.5%. Averaging the spot rates or dividing by three years would be incorrect.

  1. A5.5%Correct
  2. B5.0%
  3. C4.5%
  4. D3.67%

Explanation

The forward rate is (5%×3 − 4%×1)/(3 − 1) = 11%/2 = 5.5%. Averaging the two spot rates gives 4.5%, which ignores the different time weights. Dividing 11% by 3 gives 3.67%, which uses the wrong time interval.

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