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Bloomberg reports today: The same analytical technique that uncovered cheating in currency markets and the Libor rates benchmark [details below] — resulting in about $20 billion of fines — suggests the dealers who control the U.S. Treasury market rigged bond auctions for years, according to a lawsuit. *** The plaintiffs built their case against the 22 primary dealers who serve as the backbone of Treasury trading — including Goldman Sachs Group Inc., JPMorgan Chase & Co. and Morgan Stanley — using data from Rosa Abrantes-Metz, an adjunct associate professor at New York University who has provided expert testimony in rigging cases. Her conclusion: More than two-thirds of a certain type of Treasury auction appear to have been rigged. She found issues with other auctions, too.