How can two STRIPS prices, read side by side, reveal the market's forecast of next year's interest rate?
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One-year spot rates versus multi-year
Define as the one-year rate between dates and and as today's -year spot rate, and record that prices of discount bonds reveal them.
as a geometric average of the
Write , solve for , and note that any two of , , fix the third.
Backing out a spot rate from a STRIPS price
Work the five-year STRIPS at 0.797 per dollar of face value through to , and note how the exponent changes for a six-month STRIPS.
The price ratio
Show the cancellation that leaves , compute it from the STRIPS prices 0.967 and 0.927 (about 4.3%), and record that it is a market forecast, not the future rate itself.