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Please note: The algorithm descriptions in English have been automatically translated. Errors may have been introduced in this process. For the original descriptions, go to the Dutch version of the Algorithm Register.

Market power and concentration indicators

Consumer and Market Authority

These are indicators commonly used in economics that, for example, provide insight into market shares in a defined product and geographical market or the degree of concentration in a market. Examples are HHI and the delta in HHI, CR4, LOCI and WTP. The results are checked against the picture from the market investigation and support decision-making and substantiation in competition monitoring.

Last change on 18th of July 2025, at 9:50 (CET) | Publication Standard 1.0
Publication category
Other algorithms
Impact assessment
DPIA
Status
In use

General information

Theme

Economy

Begin date

2020-02

Contact information

info@acm.nl

Link to publication website

Bevoegdheden | ACM

Responsible use

Goal and impact

These are indicators well-known and widely used in economics. By themselves, they are never decisive for a decision. They are cross-checked against other information and are at most one building block in the larger decision-making and rationale.

Considerations

Relevant indicators are needed to calculate effects of a merger or acquisition. Based on this information and further research, it is possible to make a sound decision.

Human intervention

In these calculations, the researcher himself plays the most important role. For example, he or she chooses which data (variables) are important and, in addition, whether the outcome is in line with other information is considered

Risk management

There is a risk of errors in the calculation. To prevent this, a 4-eye check has been set up and, in addition, there are other sanity checks that check whether the outcome is in line with the other information.

Legal basis

Competition law

Impact assessment

Data Protection Impact Assessment (DPIA)

Operations

Data

aggregated healthcare claims data (cleansed of personal data)

Technical design

Depends on which indicator is used. The calculations are made public and are also widely known indicators.

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