Pricing Coupon-Bond Options and Swaptions in Affine Term Structure Models

Authors: Singleton, Kenneth J.¹; Umantsev, Len²

Source: Mathematical Finance, Volume 12, Number 4, 1 October 2002 , pp. 427-446(20)

Buy & download fulltext article:

Price: $48.00 plus tax (Refund Policy)

Abstract:

This paper provides a numerically accurate and computationally fast approximation to the prices of European options on coupon-bearing instruments that is applicable to the entire family of affine term structure models. Exploiting the typical shapes of the conditional distributions of the risk factors in affine diffusions, we show that one can reliably compute the relevant probabilities needed for pricing options on coupon-bearing instruments by the same Fourier inversion methods used in the pricing of options on zero-coupon bonds. We apply our theoretical results to the pricing of options on coupon bonds and swaptions, and the calculation of ``expected exposures'' on swap books. As an empirical illustration, we compute the expected exposures implied by several affine term structure models fit to historical swap yields.

Keywords: Coupon-bond options; swaptions; affine term structure model; swaps; expected exposure

Document Type: Research article

DOI: http://dx.doi.org/10.1111/1467-9965.12408

Affiliations: 1: Graduate School of Business, Stanford University, and NBER 2: Department of Management Science and Engineering, Stanford University

Publication date: 2002-10-01