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ORCID

Russell W. Pittman – 0000-0001-9498-0561

Keywords

Merger enforcement, Critical loss analysis, Upward pricing pressure, Vertical arithmetic, Horizontal mergers, Vertical mergers, Antitrust economics.

Abstract

This paper presents a non-technical introduction to three economic tools that have in recent years become widespread in competition law enforcement in general and in the analysis of proposed mergers in particular: critical loss analysis, upward pricing pressure, and the vertical arithmetic. In addition, for each tool, its use in a recent U.S. merger case is illustrated: for critical loss analysis, the Novelis/Aleris merger; for upward pricing pressure, the GE/Electrolux merger; and for the vertical arithmetic, the Comcast/NBCU joint venture.

Acknowledgements

Funding

This article received no funding.

Declaration of Conflict of Interests

The authors declared no potential conflicts of interest with respect to the research, authorship and publication of this article.

Declaration about the scope of AI utilisation

The author did not use AI in the preparation of this article.

Acknowledgment

This paper is a revised and augmented version of Pittman (2018). The views expressed do not purport to reflect the views of the U.S. Department of Justice.

Page Count

29

Received Date

27.07.2025

Accepted Date

24.11.2025

DOI

10.7172/1689-9024.YARS.2025.19.33.2

JEL Code

K21, L41, L42

Publisher

University of Warsaw

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