Not only does recent Middle East political turmoil flood the news. Actual supply interruptions, as well as conjectural ones, of course influence petroleum and other trading and hedging behavior.Increasing petroleum consumption in non-OECD (developing) nations, though it is challenging to measure, is a bullish factor. There’s probably been a shift within the petroleum industry from a rather confident “just-in-time” orientation to a more fearful “just-in case” bias regarding preferred levels of inventory holding. Moreover, keep in mind the continued bullish effects of the weak United States dollar, low policy interest rates in America and many other OECD nations, noteworthy quantitative easing (money printing), and the global economic recovery story in general and associated rallies in stock marketplaces. Moreover, to many soothsayers onWall Street and beyond, commodities (particularly petroleum) are a new asset class. This faith inspires “alternative investment” (buy and hold for the long run) in that universe, thus tightening petroleum free supply and pushing prices higher.

By around calendar 1996, US petroleum statistics suggest a move to lower inventory holdings in days coverage terms, probably at least due to widespread faith in the appropriateness of just-in-time inventory management.

So the longer that US (and OECD) holdings such as those of March 2011 remain high relative to the 1996-10 period, the more it seems that there has been a partial shift (by at least some industry members) to a just-in-case approach. Given what may happen in the oil world, why not hold a bit more around “than usual”. Players may grab an three or four days extra now relative to just-in-time needs, as versus say 10 or more days in the distant past.

Both the 2008 and 1987 eras hint that any major (final) high in the petroleum complex will be fairly near in time (within a few months, either before or after) one in United States equities.