Explaining the distribution of firm growth rates
利用细分数据揭示企业增长率概率密度呈指数分布，并提出模型解释这一规律，对研究企业动态和产业组织的学者有参考价值。
Empirical analyses on aggregated datasets have revealed a common exponential behavior in the shape of the probability density of corporate growth rates. We present clear‐cut evidence on this topic using disaggregated data. We explain the observed regularities proposing a model in which firms' ability to take up new business opportunities increases with the number of opportunities already exploited. A theoretical result is presented for the limiting case in which the number of firms and opportunities go to infinity. Moreover, using simulations, we show that even in a small industry the agreement with asymptotic results is almost complete .