Arm Holdings is facing a US antitrust investigation by the Federal Trade Commission related to how it licenses its semiconductor technology, according to multiple reports citing people familiar with the matter. The probe centers on whether Arm’s licensing practices could be restricting competition or creating an illegal monopoly in parts of the semiconductor market. The reports describe the inquiry as part of broader, ongoing global scrutiny of Arm’s business model and licensing arrangements. Bloomberg reports that the FTC investigation concerns the UK-based company’s licensing of chip technology and is being carried out by the US regulator. Other outlets that summarize the same reports similarly state that the FTC is examining the legality of Arm’s licensing conduct and its potential impact on competition. None of the sources provided additional findings, specific alleged agreements, or the current stage of the investigation. Arm’s response, potential remedies, or timelines are not included in the excerpts provided. The investigation is reported to be ongoing and based on questions about whether certain licensing terms could disadvantage competitors or limit market access.