Carl Kreuzberg

Carl Kreuzberg

Ph.D. Student
Firms and Markets Department

Research Topics and Working Areas

Carl Kreuzberg is a PhD candidate in the Firms and Markets Department, specializing in empirical industrial organization. His current research combines applied econometrics, natural language processing, and large language models to detect anti-competitive behavior in firms’ communication patterns, analyze enforcement and market data, and improve empirical cartel screening methodologies used by competition authorities. He holds an MSc and a BSc in Economics from the University of Mannheim and has professional experience as an Analyst at the Monopolies Commission, an independent expert committee that advises the German government on competition policy, competition law, and regulation.

Publications

DIW Discussion Papers 2131 / 2025

Public Communication and Collusion: New Screening Tools for Competition Authorities

2025| Tomaso Duso, Joseph E. Harrington Jr., Carl Kreuzberg, Geza Sapi
Refereed essays Web of Science

Public Communication and Collusion: New Screening Tools for Competition Authorities

In: Journal of Competition Law & Economics (2026), im Ersch. [online first: 2026-02-02] | Tomaso Duso, Joseph E.Harrington, Jr., Carl Kreuzberg, Geza Sapi
Externe Working Papers

Public Communication and Collusion: New Screening Tools for Competition Authorities

London: CEPR, 2025, 41 S.
(Discussion Paper Series / Center for Economic Policy Research ; 20490)
| Tomaso Duso, Joseph E. Harrington, Jr, Carl Kreuzberg, Geza Sapi
Zeitungs- und Blogbeiträge

How Firms Use Public Communication to Collude and What Regulators Can Do about It

In: Promarket (16.09.2025), [Online-Artikel] | Tomaso Duso, Joseph E. Harrington, Jr., Carl Kreuzberg, Geza Sapi

Lectures

Vortrag

Public Communication and Collusion: New Screening Tools for Competition Authorities

Tomaso Duso, Joseph E. Harrington, Jr., Carl Kreuzberg, Geza Sapi
[Online], 26.02.2026
| Internal Seminar: Brasilian Competition Authority [Online]
Vortrag

Public Communication and Collusion: New Screening Tools for Competition Authorities

Tomaso Duso, Joseph E. Harrington, Jr., Carl Kreuzberg, Geza Sapi
[Online], 26.01.2026
| Internal Seminar: Israel Competition Authority [Online]
Vortrag

Public Communication and Collusion: New Screening Tools for Competition Authorities

Tomaso Duso, Joseph E. Harrington, Jr., Carl Kreuzberg, Geza Sapi
Paris, Frankreich, 18.11.2025
| OECD Committee on Competition Law and Policy
Vortrag

Public Communication and Collusion: New Screening Tools for Competition Authorities

Tomaso Duso, Joseph E. Harrington, Jr., Carl Kreuzberg, Geza Sapi
Chania, Griechenland, 04.07.2025 - 06.07.2025
| Advances in the Analysis of Competition Policy and Regulation: 19th International Conference on Competition and Regulation - CRESSE 2025
Vortrag

Public Communication and Collusion: New Screening Tools for Competition Authorities

Tomaso Duso, Joseph E. Harrington, Jr., Carl Kreuzberg, Geza Sapi
Berlin, 26.06.2025 - 27.06.2025
| BSoE-DIW Berlin Graduate Center 2025 Summer Workshop

Research Projects

Research Project

Leibniz ScienceCampus Berlin Centre for Consumer Policies (BCCP)

Current Project| Firms and Markets
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