Tuesday, 13 May 2008

Commodities bubble

There is , what i believe, a bubble -mentality with respect to oil and other commodities -i.e. long term trends of increasing demand and diminishing supply are used to justify any increase in prices as sustainable, no matter how high. I realize that near-vertical supply and demand curves as well as other non bubble dynamics can explain sharp price increases, but the pervasiveness of this 'do not question it' mentality seems to make a bubble likely in any market where the mechanics of exchange and inventory make it feasible.

Has anyone seen attempts at predicting consequences if commodities are in a huge bubble? i.e., if peaking speculative interest and a demand shock cause oil prices to drop in half over a period of months, the impacts on agriculture commodity prices, US trade deficit, currencies, etc seem likely to be quite dramatic.