We explore the practitioners methodology of choosing time-dependent parameters to fit a bond model to selected asset prices, and show that it can lead to systematic mispricing of some assets. The Black-Derman-Toy model, for example, is likely to overprice call options on long bonds when interest...

Mathematical models of bond pricing are used by both academics and Wall Street practitioners, with practitioners introducing time-dependent parameters to fit arbitrage-free models to selected asset prices. We show, in a simple one-factor setting, that the ability of such models to reproduce a...

Mathematical models of bond pricing are used by both academics and Wall Street practitioners, with practitioners introducing time-dependent parameters to fit acirc;not;Sarbitrage-freeacirc;not;? models to select asset prices. We show, in a simple one-factor setting, that the ability of such models...

One of the central issues in international finance concerns the forward premium anomaly: changes in spot exchange rates are inversely related to the premium of forward rates over spot rates. The authors construct a numerical example of a theoretical economy with this property and discuss its...

One of the central issues in international finance concerns the forward premium anomaly: changes in spot exchange rates are inversely related to the premium of forward rates over spot rates. The authors construct a numerical example of a theoretical economy with this property and discuss its...