Arbitrage pricing cannot be applied to commodity futures because the physicalcommodity does not represent a pure asset: Since consumption and processing of thecommodity can drive down inventories to zero, it is not always possible to construct areplicating portfolio for the futures contract, and...

The innovations of this paper are fourfold: First we study return differentials more comprehensivelythan in the previous literature by comparing three asset classes : money market instruments, bonds andequities across countries. Second, we document the structure of international portfolio...