According to the WSJ: *The CFTCâs announcement about its oil investigation suggested a single, broad probe that began in December 2007. But people familiar with its enforcement priorities say the agency is pursuing multiple oil investigations, and that many of them relate to one another. CFTC enforcement chief Gregory Mocek said the agency has about 60 manipulation investigations open in various commodity markets. * The CFTC has expanded an investigation, disclosed previously by The Wall Street Journal, into alleged short-term manipulation of crude-oil prices via a widely used price-reporting system run by Platts, a unit of McGraw-Hill Cos. One suspicion is that energy companies and traders have at times issued a flood of orders during a time window used by Platts to determine its reported prices for physical oil transactions, then used the potentially distorted prices to make profits in other markets. * Another area of concern for CFTC regulators is whether the owners of crude-oil storage tanks use their knowledge to make bets on oil-futures markets. In theory, the owner of a tank could issue misleading information about the tanks being full or empty, leaving the wrong impression about whether oil is in plentiful supply. Then they could make trades to profit on the misunderstanding. * Large speculators such as hedge funds often use unregulated over-the-counter platforms, whose prices may affect prices on regulated markets. Mr. Chilton, the CFTC commissioner, said regulators are looking at cases where traders have made simultaneous bets on unregulated and regulated markets, in particular in West Texas Intermediate crude-oil contracts.