How do these modern day risk models account for a run on a broker? how do they predict a rapid decline in perpection of assets? What we have seen is a stealth nationalization of the US banking system, the system cannot operate purely as a free-market, its more like a naughty child being looked after by a worrying mum, if the fed didn't step in on friday to bail BSC, the whole system could have buckled within hours, if hundred's of billions of 3rd party issue's became un-redeemable it would of had a massive domino effect on everyone. How many times is the Fed pre-pared to use the ole bailout trick before it becomes too much? What needs to change to minimise systematic liquidity risks going forward?