Staying at Zero with Affine Processes: An Application to Term Structure Modelling

Alain Monfort, Fulvio Pegoraro (), Jean-Paul Renne and Guillaume Roussellet

Working papers from Banque de France

Abstract: We build an Affine Term Structure Model that provides non-negative yields at any maturity and that is able to accommodate a short-term rate that stays at the zero lower bound (ZLB) for extended periods of time while longer-term rates feature high volatilities. We introduce these features through a new univariate non-negative affine process called ARG-Zero, and its multivariate affine counterpart (VARG), entailing conditional distributions with zero-point masses. The affine property of this new class of processes implies both explicit bond pricing and quasi-explicit lift-off probability formulas. We provide an empirical application to Japanese Government Bond (JGB) yields, observed weekly from June 1995 to May 2014 with maturities from six months to ten years. Our four-factor specification is able to closely match yield levels and to capture conditional yield volatilities.

Keywords: Zero Lower Bound; Affine Process; Term-Structure Model; Lift-Off probabilities (search for similar items in EconPapers)
JEL-codes: E43 G12 (search for similar items in EconPapers)
Pages: 45 pages
Date: 2015
New Economics Papers: this item is included in nep-mac
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Citations: View citations in EconPapers (13)

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Journal Article: Staying at zero with affine processes: an application to term structure modelling (2017)
Journal Article: Staying at zero with affine processes: An application to term structure modelling (2017)
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Persistent link: https://EconPapers.repec.org/RePEc:bfr:banfra:558

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