Banks are benefiting from an increase in corporate sector demand for alternative ways of raising finance while capital markets are effectively closed. 

JP Morgan Chase thought it had its Enron risks insured. Now it is fighting a legal battle to reclaim the money. The case raises wider questions about the effectiveness of credit insurance and the much-heralded convergence between banking and insurance.

The asset-backed commercial paper (ABCP) market, which started modestly as a way for banks to move assets off their balance sheet, using special purpose vehicles known as conduits, is today among the most innovative and complex financial sectors, often supporting entirely synthetic transactions.But its very success is arousing concern among some close observers. The market's role in shifting risk, often to exploit anomalies in the regulatory treatment of the banks' capital, looks distinctly uncertain when the rules change in three years time under current proposals.