The Risk Premium and Cost-of-Carry models regarding the pricing of Australi
an dollar futures contracts traded on the International Monetary Market of
the Chicago Mercantile Exchange are estimated and compared. Cointegating re
lationships among the Australian dollar spot and futures prices, and US and
Australian risk-free rates of interest, suggest an error-correction repres
entation for the Risk Premium model, and two alternative error-correction f
ormulations for the Cost-of-Carry model. Two significant structural breaks
in the futures price series permit estimation of appropriate models for the
full sample in the presence of these breaks, for the full sample without e
xplicitly modelling the breaks, and for various sub-samples created by thes
e structural breaks. The Risk Premium and Cost-of-Carry formulations are es
timated for all sample sets, the models obtained are found to be statistica
lly adequate, and the qualitative results are reasonably robust across diff
erent sample sets for both models. (C) 1999 IMACS/Elsevier Science B.V. All
rights reserved.