What is the 'Shadow Financial System'?

Since the onset of the liquidity and credit crunch last summer this column has been arguing that monetary policy would be impotent to address such a crunch because, in part, of the existence of a non-bank “shadow financial system”. This system is composed of conduits, SIVs, investment banks/broker dealers, money market funds, hedge funds and other non bank financial institutions.

All these institutions look similar to banks because they are highly leveraged and borrow short and in liquid ways and invest or lend long and in illiquid ways. This shadow financial system is, like banks, subject not only to credit and market risk but also to rollover or liquidity risk, i.e. the risk deriving from having a large stock of short term liabilities (relative to liquid assets)  that may not roll over if creditors decide to withdraw their credits to these institutions.

Unlike banks this shadow financial system does not have access to the lender of last resort support of the central bank as these are not depository institutions regulated by the central banks. What we are now observing – with the case of Bear Stearns and the recent disaster among SIVs, conduits, run on a number of hedge funds and money market funds is a generalized liquidity run on this shadow financial system.