This paper investigates the forecastability of prices and returns in commodity futures markets. To examine the implications for models of commodity prices we derive a new canonical affine form that lends itself to model evaluation and comparison. Both regressions and model estimates imply that...

This paper analyses the validity of the weak-form market efficiency, using the random-walk hypothesis for the six industrial base metals - copper, aluminium, zinc, nickel, tin and lead - traded at the London Metal Exchange. I analyse the behaviour of daily and weekly prices of the daily rolling...