If this had been a mere subprime crisis, it would now be over. But it is not, and nor will it be over soon. The reason is that several other pockets of the credit market are also vulnerable. Credit cards are one such segment, similar in size to the subprime market. Another is credit default swaps, relatively modern financial instruments that allow bondholders to insure against default. Those who such sell such protection receive a quarterly premium, based on a percentage of the amount insured.