Smith Faculty Opinion Article
The 30 Seconds Outlook
March 15, 2010
| “. . . [I]n times of ample liquidity supplied by
the central bank, investment managers have a tendency to engage in
risky, correlated investments. . . . [T]heir investment strategies may
entail risky, tail-sensitive and illiquid securities . . ..” |
| - R. Rajan, European
Financial Management, 2006. |
The Taylor Rule discussed in a previous Outlook establishes the role of the
Fed’s loose monetary policy leading up to the financial crisis:
- “ Monetary excesses were the main cause of the crisis.”
- “The loose monetary policy accelerated the housing boom and bust.”
- “The boom and bust in the housing market would be expected to impact
financial markets.”
- “The boom and bust in the housing markets were amplified by sub-prime
mortgages but also by packaging these loans into mortgage backed securities
of great complexity with inadequate transparency.”
But, there is more to the downside of the Fed’s loose monetary policy.
Bekaert, Hoerova, and LoDuca (Working Paper, February 2010) document a strong
co-movement between the VIX Index, the option-based measure of implied
volatility for the S&P 500 Index, and monetary policy. A strong positive
correlation exists between real interest rates and future VIX levels. But, the
relationship becomes significantly negative after 13 months and remains so for
the medium term. This suggests loose monetary policy can be conducive to
financial instability. These findings are eerily familiar.
Further, loose monetary policy decreases risk aversion in the medium term,
but stock market volatility (uncertainty) is unaffected. Also, looser monetary
policy follows periods of high uncertainty.
Bernanke’s work suggests that monetary policy’s effect is not strong enough
to “pop a bubble.” However, if monetary policy increases risk taking in asset
markets, his conclusion may not hold. But, monetary policy can increase risk
aversion and affect real outcomes during crisis periods. Monetary policy thus
has a role in reducing market ”fear” evidenced by unusually high VIX levels.
In summary, monetary policy that is
too loose for too long decreases risk aversion in financial markets. This
finding is also eerily familiar.
John A. Haslem