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Regulatory antitrust investigation

UK CMA Probes Hotel Chains, CoStar

Analysis based on 16 articles · First reported Mar 02, 2026 · Last updated Mar 02, 2026

Sentiment
-20
Attention
4
Articles
16
Market Impact
Direct
Live prominence charts, article sentiment distribution, and event development timeline available on the NewsDesk Dashboard

The market is reacting negatively to the news, with IHG Hotels & Resorts's shares falling. This investigation highlights regulatory scrutiny on data sharing and algorithmic pricing, potentially leading to changes in industry practices and increased compliance costs for affected companies.

Hospitality Data Analytics

The United Kingdom===Competition and Markets Authority (CMA) in the United Kingdom has launched an investigation into Hilton Worldwide, Marriott International, IHG Hotels & Resorts, and CoStar Group. The probe focuses on suspected sharing of competitively sensitive information among the hotel chains through CoStar Group's data analytics tool, STR. The CMA is concerned that such data sharing could reduce competition by allowing rival businesses to predict and coordinate their behavior and pricing. While no assumptions about law-breaking have been made, the investigation is part of the CMA's broader effort to ensure new technologies, like pricing algorithms, support fair competition and do not harm consumers. IHG Hotels & Resorts's shares saw a decline following the announcement, and both IHG Hotels & Resorts and CoStar Group have stated their intention to cooperate with the inquiry.

100 United Kingdom===Competition and Markets Authority launched an investigation into suspected data sharing
70 IHG Hotels & Resorts shares fell 5%
50 CoStar Group pledged to cooperate with inquiries United Kingdom===Competition and Markets Authority
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The United Kingdom===Competition and Markets Authority launched an investigation into suspected sharing of competitively sensitive information among hotel chains and a data analytics firm. This action aims to ensure fair competition and prevent misuse of new technologies.
Importance 90 Sentiment 20
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CoStar Group, owner of the STR data analytics tool, is under investigation by the United Kingdom===Competition and Markets Authority for facilitating the alleged sharing of sensitive information among hotel chains. The company expressed surprise but pledged cooperation.
Importance 90 Sentiment -30
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IHG Hotels & Resorts is under investigation by the United Kingdom===Competition and Markets Authority for suspected data sharing. Its shares fell 5% on the news, and the company has stated it will cooperate fully with the inquiries.
Importance 85 Sentiment -40
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Hilton Worldwide is under investigation by the United Kingdom===Competition and Markets Authority for suspected sharing of sensitive information through CoStar's data analytics tool. This could lead to findings of anti-competitive behavior.
Importance 80 Sentiment -30
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Marriott International is being investigated by the United Kingdom===Competition and Markets Authority for allegedly sharing competitively sensitive information via CoStar's data analytics tool. This investigation could impact its market practices and reputation.
Importance 80 Sentiment -30
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The United Kingdom, through its United Kingdom===Competition and Markets Authority, is the jurisdiction where this antitrust investigation is taking place, reflecting its commitment to fair competition.
Importance 20 Sentiment 0
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