Generating Yield Curve Stress-Scenarios
Résumé
Several authors have proposed to combine movements in princi- pal components to generate scenarios of "large" historical changes in term structures, i.e. stress-scenarios. This approach, however, has at least two shortcommings. This paper answers at these two problems and proposes a general two-steps procedure. The
rst step relies on
tting the discount bond yields and the second step relies on estimating statistically independent variables. Using the distribution of independent components identi
ed, we combine their movements to produce stress-scenarios by specifying separate "shocks" in each of the directions given by the three independent compo- nents. We apply our methodology to the U.S. term structure of interest rates over the last three decades.
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