Prove that the out-turn covariance between xT = log(ST /F(0, T )) and rT is given by
Question:
Prove that the out-turn covariance between xT = log(ST /F(0, T )) and rT is given by
where
This result neatly demonstrates the essential difference between lo-
cal correlation and implied correlation (from a Libor-equity outperformance option, for example) in stochastic rate problems.
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Related Book For
The Value Of Uncertainty Dealing With Risk In The Equity Derivatives Market
ISBN: 9781848167728,9781908979582
1st Edition
Authors: George Kaye
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