Julian di Giovanni, Andrei Levchenko, Isabelle Mejean, 16 November 2012

What difference does the release of the iPhone 5 really make to the US economy? This column argues that idiosyncratic shocks to individual firms significantly contribute to aggregate fluctuations. Using empirical evidence from France, this column argues that shocks to the largest firms, combined with firm-to-firm linkages, can travel far beyond the sector and country of origin.

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