Artikel

Term structure modeling under volatility uncertainty

In this paper, we study term structure movements in the spirit of Heath et al. (Econometrica 60(1):77–105, 1992) under volatility uncertainty. We model the instantaneous forward rate as a diffusion process driven by a G-Brownian motion. The G-Brownian motion represents the uncertainty about the volatility. Within this framework, we derive a sufficient condition for the absence of arbitrage, known as the drift condition. In contrast to the traditional model, the drift condition consists of several equations and several market prices, termed market price of risk and market prices of uncertainty, respectively. The drift condition is still consistent with the classical one if there is no volatility uncertainty. Similar to the traditional model, the risk-neutral dynamics of the forward rate are completely determined by its diffusion term. The drift condition allows to construct arbitrage-free term structure models that are completely robust with respect to the volatility. In particular, we obtain robust versions of classical term structure models.

Language
Englisch

Bibliographic citation
Journal: Mathematics and Financial Economics ; ISSN: 1862-9660 ; Volume: 16 ; Year: 2021 ; Issue: 2 ; Pages: 317-343 ; Berlin, Heidelberg: Springer

Classification
Wirtschaft
Corporate Finance and Governance: General
Asset Pricing; Trading Volume; Bond Interest Rates
Subject
Term structure of interest rates
No-arbitrage
Ambiguous volatility
Knightian uncertainty
Model uncertainty
Robust finance

Event
Geistige Schöpfung
(who)
Hölzermann, Julian
Event
Veröffentlichung
(who)
Springer
(where)
Berlin, Heidelberg
(when)
2021

DOI
doi:10.1007/s11579-021-00310-4
Last update
10.03.2025, 11:44 AM CET

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Object type

  • Artikel

Associated

  • Hölzermann, Julian
  • Springer

Time of origin

  • 2021

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