That is the point of having a competent CFO. The letters "CFO" are pronounced "those in the know". Doing a cash sweep is NOT rocket science and there are lots

That is the point of having a competent CFO. The letters "CFO" are pronounced "those in the know". Doing a cash sweep is NOT rocket science and there are lots of services that can do it for you. A company can also project forward and ladder treasury instruments to mature at the right times to provide liquidity. T-{notes,bills,bonds} are issued by the US government and thus have at least as much resiliency as the SDIC.