The Affine Arbitrage-Free Class of Nelson-Siegel Term Structure Models

Working Paper: NBER ID: w13611

Authors: Jens H. E. Christensen; Francis X. Diebold; Glenn D. Rudebusch

Abstract: We derive the class of arbitrage-free affine dynamic term structure models that approximate the widely-used Nelson-Siegel yield-curve specification. Our theoretical analysis relates this new class of models to the canonical representation of the three-factor arbitrage-free affine model. Our empirical analysis shows that imposing the Nelson-Siegel structure on this canonical representation greatly improves its empirical tractability; furthermore, we find that improvements in predictive performance are achieved from the imposition of absence of arbitrage.

Keywords: Term Structure Models; Yield Curve; Nelson-Siegel; Arbitrage-Free Models

JEL Codes: G12; G1


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
Imposition of the Nelson-Siegel structure (G19)Enhanced empirical tractability (C51)
Imposition of the Nelson-Siegel structure (G19)Improved forecasting performance (C53)
Absence of arbitrage (G19)Better predictive outcomes (C52)
Absence of arbitrage (G19)Improved forecasting performance for longer maturities (G17)
New class of arbitrage-free models (C58)Outperform standard dynamic Nelson-Siegel models (G19)

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