"What is equally striking, however, is the all-encompassing list of names which purchased insurance on mortgage instruments from AIG, via credit derivatives. After all, during the past decade, the theory behind modern financial innovation was that it was spreading credit risk round the system instead of just leaving it concentrated on the balance sheets of banks.Setser adds:
But the AIG list shows what the fatal flaw in that rhetoric was. On paper, banks ranging from Deutsche Bank to Société Générale to Merrill Lynch have been shedding credit risks on mortgage loans, and much else. Unfortunately, most of those banks have been shedding risks in almost the same way – namely by dumping large chunks on to AIG. Or, to put it another way, what AIG has essentially been doing in the past decade is writing the same type of insurance contract, over and over again, for almost every other player on the street.
Far from promoting “dispersion” or “diversification”, innovation has ended up producing concentrations of risk, plagued with deadly correlations, too. Hence AIG’s inability to honour its insurance deals to the rest of the financial system, until it was bailed out by US taxpayers."
"many European banks were growing their dollar balance sheets so quickly that many started to rely heavily on US money market funds for financing. And if an institution is borrowing from US money market funds to buy securitized US mortgage credit, in a lot of ways it is a US bank, or at least a shadow US bank. Consequently I think it is possible to think of AIG as the insurer-of-last resort to the United States’ own shadow financial system. That shadow financial system just operated offshore."
If these flows of capital had been exposed earlier, the shadow financial system would have come apart earlier. US investors in money market funds would have pulled their cash out.