ARBITRAGE SMOOTHING IN FITTING A SEQUENCE OF YIELD CURVES
Paul A. Bekker () and
Kees E. Bouwman ()
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Paul A. Bekker: Department of Economics, University of Groningen, P.O. Box 800, 9700 AV Groningen, The Netherlands
Kees E. Bouwman: Econometric Institute, Erasmus University Rotterdam, P.O. Box 1738, 3000 DR Rotterdam, The Netherlands
International Journal of Theoretical and Applied Finance (IJTAF), 2009, vol. 12, issue 05, pages 577-588
Empirical modeling of the yield curve is often inconsistent with absence of arbitrage. In fact, many parsimonious models, like the popular Nelson-Siegel model, are inconsistent with absence of arbitrage. In other cases, arbitrage-free models are often used in inconsistent ways by recalibrating parameters that are assumed constant. For these cases, this paper introduces an arbitrage smoothing device to control arbitrage errors that arise in fitting a sequence of yield curves. The device is applied to the US term structure for the family of Nelson-Siegel curves. It is shown that the arbitrage smoothing device contributes to parameter stability and smoothness.
Keywords: Yield curve; absence of arbitrage; smoothing; Nelson-Siegel model (search for similar items in EconPapers)
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