The central problem with central banks is their mandate now includes propping up all asset markets globally. Back in the good old days before the Global Financial Meltdown of 2008-09, central bankers reckoned they could control the “animal spirits” released when the risk-on herd destabilized into a chaotic risk-off stampede.
As former Federal Reserve chairman Alan Greenspan noted in his 2014 Foreign Affairs article Why I Didn’t See the Crisis Coming, the models used by central banks and private economists alike presumed the demand for risk-on assets would remain robust even in a downturn:
Almost all market participants were aware of the growing risks, but they also knew that a bubble could keep expanding for years. Financial firms thus feared that should they retrench too soon, they would almost surely lose market share, perhaps irretrievably. In July 2007, the chair and CEO of Citigroup, Charles Prince, expressed that fear in a now-famous remark: “When the music stops, in terms of liquidity, things will be complicated. But as long as the music is playing, you’ve got to get up and dance. We’re still dancing.”
Financial firms accepted the risk that they would be unable to anticipate the onset of a crisis in time to retrench. However, they thought the risk was limited, believing that even if a crisis developed, the seemingly insatiable demand for exotic financial products would dissipate only slowly, allowing them to sell almost all their portfolios without loss.
They were mistaken. They failed to recognize that market liquidity is largely a function of the degree of investors’ risk aversion, the most dominant animal spirit that drives financial markets. Leading up to the onset of the crisis, the decreased risk aversion among investors had produced increasingly narrow credit yield spreads and heavy trading volumes, creating the appearance of liquidity and the illusion that firms could sell almost anything.
