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Keywords:Structural break 

Working Paper
Are Shadow Rate Models of the Treasury Yield Curve Structurally Stable?

We examine the structural stability of Gaussian shadow rate term structure models of Treasury yields over a period that includes the time during which the U.S. policy rate was at its effective lower bound. After a conceptual discussion of several potential sources of a structural break in the context of the shadow rate model, we document various pieces of evidence for structural instability based on predictive tests and Lagrange multiplier tests, as well as with separate estimations of the pre-ELB and post-ELB subsamples. In order to overcome the difficulties associated with the latent-factor ...
Finance and Economics Discussion Series , Paper 2020-061

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