RT Journal Article SR Electronic T1 Interest Rate Model Selection JF The Journal of Portfolio Management FD Institutional Investor Journals SP 74 OP 86 DO 10.3905/jpm.2004.319932 VO 30 IS 2 A1 Alexander. Levin YR 2004 UL https://pm-research.com/content/30/2/74.abstract AB Analysis of the most popular single-factor mortgage valuation models unambiguously rejects the lognormality of interest rates. Recent trends in the swaption market indicate normalization, supporting use of the Hull-White model, which can be quickly and accurately calibrated to at-the-money swaptions. Durations for TBA instruments come up shorter by the Hull-White model and are generally more in line with the empirical measures. The issue of negative rates is not found to be detrimental to the standard OAS pricing practice.