Changes in risk appetite seem to depend on the level of risk appetite in the preceding month. Up- and downswings of risk appetite are driven by investors’ perceptions. If risky assets have outperformed for some time, investors tend to expect a continuation of this outperformance. Conversely, during times of underperformance of risky assets, investors apparently recall the downside risks associated with higher yielding assets. At the height of the equity bubble in March 2000, for example, riskier assets had been performing better than safer assets, whereas at the ‘panic’ low in October 2002, riskier assets had been performing worse. It should be noted that reversals seem to become more and more likely as risk appetite reaches extreme levels. For example, having made a panic low CSFB’s Global Risk Appetite Index usually reenters the euphoria zone in roughly 12–18 months. This index is calculated as the slope of a weighted regression of the returns of a broad range of assets from across the global risk spectrum against their historical return volatility. At a ‘euphoric’ peak as in March 2000, riskier assets had been performing a lot better than safer assets, whereas at a ‘panic’ low such as October 2002, riskier assets had been performing worse. Kindleberger describes the periods when the risk appetite reaches extremes as ‘distress’. He notes that in the extreme zone there appears to be an increased probability that events, which normally would be ignored by financial markets, trigger a reversal of the cycle.