赫芬达尔—赫希曼指数（Herfindahl-Hirschman Index，简称HHI），简称赫芬达尔指数，是一种测量产业集中度的综合指数。 它是指一个行业中各市场竞争主体所占行业总收入或总资产百分比的平方和，用来计量市场份额的变化，即市场中厂商规模的离散度。

2024年6月12日 · The Herfindahl-Hirschman Index (HHI) is a common measure of market concentration and is used to determine market competitiveness, often pre- and post- merger …

The Herfindahl index (also known as Herfindahl–Hirschman Index, HHI, or sometimes HHI-score) is a measure of the size of firms in relation to the industry they are in and is an indicator of the amount of competition among them.

HHI指数，也称赫希曼-赫芬达尔指数， 是一种测量产业集中度的综合指数，以用来反应市场规模的离散度与集中度，是经济学界和政府管制部门使用较多的指标，其公式为：

2021年12月28日 · 赫芬达尔指数的全称为赫芬达尔-赫希曼指数（Herfindahl-Hirschman Index，简称HHI），它是衡量产业集中度的常用指标，通常用于确定并购交易前后的市场竞争力，在反垄断调查比较常见。

2024年1月17日 · The term “HHI” means the Herfindahl–Hirschman Index, a commonly accepted measure of market concentration. The HHI is calculated by squaring the market share of each firm competing in the market and then summing the resulting numbers.

What is the Herfindahl-Hirschman Index (HHI)? The Herfindahl-Hirschman Index is an index that measures the market concentration of an industry. A highly concentrated industry is one where only a few players in the industry hold a large percentage of the market share, leading to a near- monopolistic situation.

The Herfindahl-Hirschman Index (HHI) measures market concentration, helping regulators assess competition and prevent monopolies. Used in merger reviews, a high HHI signals reduced competition, while a low HHI suggests a competitive market. Despite limitations, HHI remains a key tool in antitrust and economic policy decisions.

Herfindahl-Hirschman 指数 (HHI) 是公认的市场集中度指标。 它的计算方法是将在市场上竞争的每家公司的市场份额平方，然后将所得数字相加。 它的范围可以从接近零到 10,000。 美国司法 …

2024年11月6日 · 赫芬达尔-赫希曼指数（HHI）是衡量市场集中度的重要指标，广泛应用于经济学和反垄断领域。 本文将详细介绍HHI的计算方法及其应用。 首先，了解HHI的基本概念。 HHI …