In the crude oil trading world, having ownership of physical barrels is prized for the information it gives about the market. Investors, swaps traders, and hedge funds scrabble for published information about what national oil companies, majors, and refiners are doing with their oil, who themselves already know of course, because they are the ones that own it. This aspect of the oil market is little remarked upon in news stories about acquisitions, because it is little understood.
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