> McNamara immediately called Goldman Sachs and used every penny they had to buy credit default swaps on the CMBX.6 tranches. “They didn’t think I was crazy this time around,” McNamara said. Everyone at MP was confident that the market’s fear of COVID-19 would make these bonds go bust—and fast.

Why would GS sell these if they know the insurance policy is going to go badly for them (GS)?