Wow. This is amazing, and although the article doesn't confirm it, the data must reflect market manipulation or Bernie wouldn't have leaked it:

WASHINGTON (Reuters) - Oil trading data that exposed the extensive positions speculators held in the run-up to record high prices in 2008 were intentionally leaked by a U.S. senator, sparking broader concern about industry confidentiality as Congress moves on Wall Street reform.

Senator Bernie Sanders, a staunch critic of oil speculators, leaked the information to a major newspaper in a move that has unsettled both regulators and Wall Street alike.

In a June 16 e-mail reviewed by Reuters, a senior policy adviser to Sanders discusses how his office received private data with the names and positions of traders and forwarded it exclusively to a Wall Street Journal reporter.

The e-mail, which also attaches two files with the data, was sent to Public Citizen's Tyson Slocum asking him to review it and speak with the newspaper about his observations.

In a statement from Sanders provided to Reuters, Sanders said he felt the data needed to be publicly aired.

"The CFTC has kept this information hidden from the American public for nearly three years," he said. "This is an outrage. The American people have a right to know exactly who caused gas prices to skyrocket in 2008 and who is causing them to spike today."

The leaked information has sparked concern at the Commodity Futures Trading Commission, which is legally prohibited from releasing confidential information that identifies trader positions and identities.

The leak also raises broader questions as U.S. regulators gear up to collect massive new amounts of private data from market players on everything from swaps and hedge funds to blueprints for how large financial firms can be liquidated. The breach of data could make Wall Street less reluctant to hand over sensitive information if they fear it is not appropriately safeguarded.

"This type of incident will have a chilling effect on derivatives trading in the U.S. because market participants will be reluctant to take the risk that their positions will be exposed to the public-and their competitors," John Damgard, president of the Futures Industry Association, said in a statement sent to Reuters.