Credit Default Swap (CDS) for the US Bancorp, number 5 of the largest American banks, has risen historically high after a short spring cooling.
CDS is a kind of insurance against default. To swap the risks of default, the lender buys a CDS from another investor who agrees to reimburse them if the borrower defaults.
The higher is the CDS price, the bigger is the default possibility. At least the market believes so.