But in many cases these entities had back-up credit lines to the supporting bank, so that when funding difficulties arose, the securitised loans in effect came back onto the bank’s balance sheet. And even where there was no formal obligation to act as a lender of last resort, originators often chose to provide back-up finance in order to protect their name in funding markets. The motive for setting up these off-balance-sheet entities was entirely one of regulatory arbitrage. Off-balance-sheet vehicles were not required to hold capital in the same way as a bank would if the loans were on their balance sheet. So it appeared to be a neat way to boost profits without having to raise more capital. The Banco d’España, the Spanish banking supervisor, insisted that Spanish banks would have to treat conduits and the like as on balance sheet for capital purposes. As a result, Spain did not see the mushrooming of these off-balance-sheet vehicles. A third distortion lies in the nature of remuneration contracts. Incentive contracts that offer potentially unlimited upside rewards, but cap the downside losses, encourage traders to take on excessive risk. One unintended consequence of financial innovation was that it enabled clever traders to create positions with considerable embedded leverage – that is, portfolios requiring little payment up front, but whose returns amplified changes in the value of the underlying assets. Traders then had a natural incentive to gravitate towards these types of highly risky instruments.
Following a long period of unusually good economic performance, characterised by relatively steady growth and low and stable inflation in the advanced economies and rapid growth and development in key emerging market economies, we have seen the eruption of a systemic financial crisis of quite unusual intensity and international reach. The nearest precedent is probably the widespread closing of international capital markets on the eve of the First World War. And associated with that, we have seen the sharpest internationally synchronised slowdown in growth in the post-war period, together with an unprecedented contraction in world trade. To the public at large our present troubles are the fault of: whiz-kid financiers, who created financial instruments that even they didn’t properly understand; greedy bankers, who pursued profit and personal reward without regard to risk or common sense; somnolent supervisors, who failed to adequately regulate and restrain those bankers; and negligent central bankers, who allowed an explosion in liquidity, credit and asset prices that supported the whole rotten edifice. And all the while, the culprits were cheered on by an economics profession that was over-enamoured of theoretical models, blind to the lessons of history and subject to a severe case of “group think”. Wasn’t it blindingly obvious that the whole house of cards would come crashing down at some point? As one of those involved in responding to the crisis – and some might charge also a bit part in creating the conditions for it – I want to look this evening at how we got here.