Goldman Sachs was simultaneously selling mortgage backed securities to clients as safe investments while internally betting those same products would fail. Here is the documented proof.

The most damning aspect of the 2008 financial crisis is not the crash itself. It is what Goldman Sachs was doing in the years leading up to it. They were creating and selling Collateralised Debt Obligations — bundles of thousands of mortgages — to investors as AAA rated safe assets. At