At the height of the housing boom, Goldman was selling billions in bundled mortgage-backed securities — often toxic crap of the no-money-down, no-identification-needed variety of home loan — to various institutional suckers like pensions and insurance companies, who frequently thought they were buying investment-grade instruments. At the same time, in a glaring example of the perverse incentives that existed and still exist, Goldman was also betting against those same sorts of securities — a practice that one government investigator compared to “selling a car with faulty brakes and then buying an insurance policy on the buyer of those cars.”
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