Concentration Ratio

AAA

DEFINITION of 'Concentration Ratio'

In economics, a ratio that indicates the relative size of firms in relation to their industry as a whole. Low concentration ratio in an industry would indicate greater competition among the firms in that industry than one with a ratio nearing 100%, which would be evident in an industry characterized by a true monopoly.

INVESTOPEDIA EXPLAINS 'Concentration Ratio'

The concentration ratio indicates whether an industry is comprised of a few large firms or many small firms. The four-firm concentration ratio, which consists of the market share (expressed as a percentage) of the four largest firms in an industry, is a commonly used concentration ratio. The Herfindahl index, another indicator of firm size, has a fair amount of correlation to the concentration ratio.

RELATED TERMS
  1. Perfect Competition

    A market structure in which the following five criteria are met: ...
  2. Microeconomics

    The branch of economics that analyzes the market behavior of ...
  3. Economics

    A social science that studies how individuals, governments, firms ...
  4. Oligopoly

    A situation in which a particular market is controlled by a small ...
  5. Herfindahl-Hirschman Index - HHI

    A commonly accepted measure of market concentration. It is calculated ...
  6. Monopoly

    A situation in which a single company or group owns all or nearly ...
RELATED FAQS
  1. What's the difference between microeconomics and macroeconomics?

    Microeconomics is generally the study of individuals and business decisions, macroeconomics looks at higher up country and ... Read Full Answer >>
  2. What is the utility function and how is it calculated?

    In economics, utility function is an important concept that measures preferences over a set of goods and services. Utility ... Read Full Answer >>
  3. What does marginal utility tell us about consumer choice?

    In microeconomics, utility represents a way to relate the amount of goods consumed to the amount of happiness or satisfaction ... Read Full Answer >>
  4. What is the difference between JIT (just in time) and CMI (customer managed inventory)?

    Just-in-time (JIT) inventory management focuses solely on the need to replenish inventory only when it is required, reducing ... Read Full Answer >>
  5. What are some examples of Apple and Google's best-selling product lines?

    There are many good examples of product lines in the technology sector from some of the largest companies in the world, such ... Read Full Answer >>
  6. What is a negative write-off?

    A negative write-off is a write-off conducted by a company or accountant after deciding not to pay back an individual or ... Read Full Answer >>
Related Articles
  1. Economics

    Economics Basics

    Learn economics principles such as the relationship of supply and demand, elasticity, utility, and more!
  2. Investing Basics

    Analyze Investments Quickly With Ratios

    Make informed decisions about your investments with these easy equations.
  3. Forex Education

    Using The Price-To-Book Ratio To Evaluate Companies

    The P/B ratio can be an easy way to determine a company's value, but it isn't magic!
  4. Options & Futures

    Henry Ford: Industry Mogul And Industrial Innovator

    This man made his dream of bringing the automobile to the masses a reality.
  5. Mutual Funds & ETFs

    ETF Analysis: SPDR S&P 500 Trust

    Find out more about the SPDR S&P 500 ETF Trust, the characteristics of the exchange traded fund and the suitability of investing in the fund.
  6. Mutual Funds & ETFs

    ETF Analysis: Energy Select Sector SPDR

    Find out more about the Energy Select Sector SPDR Fund, the top holdings of this exchange-traded fund and the characteristics of the fund.
  7. Investing News

    The Financial Singularity Will Destroy Your Return

    Given the current and future growth of financial technology, many believe algorithms will soon define what drives market outcomes. With a wealth of big data, algorithms would be able to create ...
  8. Economics

    What Does Inferior Good Mean?

    The term “inferior good” does not describe a lack of quality, but rather, is an economic term used when discussing elasticity of demand for a good.
  9. Economics

    What Is a Giffen Good?

    A Giffen good is a product whose demand increases as its price increases, and falls when its price falls.
  10. Economics

    What Does Going Concern Mean?

    Going concern is a concept used in business and accounting to describe the fiscal health of a company.

You May Also Like

Hot Definitions
  1. Xetra

    An all-electronic trading system based in Frankfurt, Germany. Launched in 1997 and operated by the Deutsche Börse, the Xetra ...
  2. Nuncupative Will

    A verbal will that must have two witnesses and can only deal with the distribution of personal property. A nuncupative will ...
  3. OsMA

    An abbreviation for Oscillator - Moving Average. OsMA is used in technical analysis to represent the variance between an ...
  4. Investopedia

    One of the best-known sources of financial information on the internet. Investopedia is a resource for investors, consumers ...
  5. Unfair Claims Practice

    The improper avoidance of a claim by an insurer or an attempt to reduce the size of the claim. By engaging in unfair claims ...
  6. Killer Bees

    An individual or firm that helps a company fend off a takeover attempt. A killer bee uses defensive strategies to keep an ...
Trading Center
×

You are using adblocking software

Want access to all of Investopedia? Add us to your “whitelist”
so you'll never miss a feature!