Financial assets can fail. An asset (share, loan, bond, mutual fund, etc.) is a contract promising some return in the future for your cash today. Some people, firms, states, etc. cannot fulfill their promises due to unexpected events or excess of confidence. They destroy value since evaporated your cash. The problem then is that these broken contracts need to be repriced and sold. Please, help me to gather literature on this matter. Any suggestion or comment is highly welcomed.