What Determines U.S. Swap Spreads?

Adam Kobor, Lishan Shi and Ivan Zelenko

No 7272 in World Bank Publications - Books from The World Bank Group

Abstract: This paper examines the evolution of the U.S. interest swap market. The authors review the theory and past empirical studies on U.S. swap spreads, and estimate an error-correction model for maturities of 2, 5, and 10 years from 1994 to 2004. Financial theory depicts swaps as contracts indexed on London Inter-Bank Offered (LIBOR) rates, rendered almost free of counterparty default risk by mark-to-market and collateralization. Swap spreads reflect the LIBOR credit quality (credit component) and a liquidity convenience premium present in Treasury rates (liquidity component). Multifactor models that were estimated on observed swap rates highlighted the central role played by the liquidity component in explaining swap-spread dynamics over the past 15 years. The multifactor models also found some puzzling empirical results. Statistical models, on the other hand, based mainly on market analysis, faced technical difficulties arising from the presence of regime changes, from the non-stationary in swap spreads, and from the coexistence of long-term and shorter-term determinants. Against this background, the authors apply an error-correction methodology based on the concept of co-integration. They find that U.S. dollar swap spreads and the supply of U.S. Treasury bonds are co-integrated, suggesting that the Treasury supply is a key determinant on a long-term horizon. The authors estimate an error-correction model that integrates this long-term relationship with the influence of four shorter-term determinants: the AA spread, the repo rate, the difference between on-the-run and off-the-run yields, and the duration of mortgage-backed securities. The error-correction model fits observed swap spreads quite well over the sample period. The authors illustrate how the same model can be used to carry out scenario analysis.

Date: 2005
ISBN: 978-0-8213-6338-6
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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