Par bond
A bond priced at 100 because its coupon rate equals its yield to maturity. Rate trees are calibrated to reprice par bonds, and a swap's fixed leg is priced like one.
Where you will meet it
Par bond appears in 3 learning outcomes on the CFA syllabus. A few of them:
- Explain how bootstrapping extracts zero-coupon (spot) rates from the par curve
“For two years, a par bond priced at 100 pays its coupon at year one and coupon plus principal at year two; subtract the year-one coupon discounted at the known one-year spot rate, and the remainder must be the present value of the final payment, which gives the two-year spot rate.”
- Explain the pricing of interest rate swaps, and work out their no-arbitrage value and say what it means
“A swap's fixed leg is priced like a par bond: the swap rate is (1 − final discount factor) ÷ sum of discount factors for the payment dates.”
- Explain how a binomial interest rate tree is calibrated so that it fits a given term structure
“Calibrating a tree means choosing node rates so that it reproduces the market prices of the benchmark bonds, usually par bonds priced at 100.”
See also
Calibration · Yield to maturity
Practise it
Practise par bond until it is automatic: questions that explain every wrong option.
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