The shadow banking sector is trying its hand at trading in debt-based products such as collateralised loan obligations

When Margot Robbie made a surprise cameo in the 2015 film adaptation of Michael Lewis’s book The Big Short, she did more to educate the general population about the risks of securitisation than most financial experts.

The Australian actor’s brief monologue, notoriously delivered from a champagne bubble bath, explained how banks were bundling up their growing cache of risky sub-prime mortgages into investable bonds, before slicing them up and selling them off for profit.