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arXiv physics/05121242005-12physics.soc-phq-fin.GN

重新审视企业规模分布

Re-examination of the size distribution of firms

Taisei Kaizoji, Hiroshi Iyetomi, Yuichi Ikeda

备注：: 18 pages, 8 figures
发表信息：: Evolutionary and Institutional Economics Review 2-2 (2006)

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摘要：

在本文中，我们解决的问题，企业的规模分布。为此，我们使用彭博社1995-2003年跨国公司数据库，分析了日本和美国公司单独财务报表的销售额和总资产数据，并对日本和美国公司的规模分布进行了比较。我们发现，（1）美国企业的规模分布近似于对数正态分布，这与Gibrat的观察（Gibrat 1931）一致;相反，（2）日本企业的规模分布显然不是对数正态分布，规模分布的上尾遵循帕累托定律。这与Simon模型（Simon 1955）的预测一致。关键词：企业规模分布、吉布拉特定律、帕累托定律

英文摘要：

In this paper we address the question of the size distribution of firms. To this aim, we use the Bloomberg database comprising multinational firms within the years 1995-2003, and analyze the data of the sales and the total assets of the separate financial statement of the Japanese and the US companies, and make a comparison of the size distributions between the Japanese companies and the US companies. We find that (i) the size distribution of the US firms is approximately log-normal, in agreement with Gibrat's observation (Gibrat 1931), and in contrast (ii) the size distribution of the Japanese firms is clearly not log-normal, and the upper tail of the size distribution follows the Pareto law. It agree with the predictions of the Simon model (Simon 1955). Key words: the size distribution of firms, the Gibrat's law, and the Pareto law

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