From the Business Life section of The FT: Survival in an age of turbulence
Most business executives these days would agree that companies operate in an era of exceptional turbulence. Lehman Brothers, they might point out, weathered the US civil war, several recessions, four financial panics, two world wars, depressions, oil shocks, and the terror attacks of 9/11, yet could not survive the current financial crisis.
Studies of the global economy tell a different story. Macroeconomists refer to a “great moderation”, based on a reduction in cyclical fluctuations in gross domestic product in recent decades in most high-income countries. In the US, for example, volatility in GDP was one-third less in the two decades after 1984 than it was in prior decades. Similarly, studies by financial economists find that aggregate stock market volatility in the US has remained flat between the 1920s and the late 1990s.
How can we reconcile the boardroom perception of growing turbulence with evidence of stability? Part of the explanation lies in the timing of the latter studies, which predated the present economic crisis. A more fundamental explanation has to do with level of analysis used to track volatility: moderation of aggregate measures, such as stock market indices and GDP, masks increased volatility at the company level.
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