- Lead. The US Federal Trade Commission has opened an antitrust investigation into Arm Holdings, the British chip architect whose processor blueprints underpin virtually all modern smartphones and data-centre infrastructure, according to Bloomberg reporting from May 15.
- Fact. The probe centres on whether Arm is restricting rivals’ access to its processor architecture now that it has begun manufacturing its own chips — a line it crossed for the first time in its 35-year history in March 2026, when it launched the Arm AGI CPU, a 136-core data-centre processor co-developed with Meta.
- Stake. Because Arm licenses its architecture to Qualcomm, Apple, and virtually every major chipmaker, a finding of anticompetitive behaviour could reshape the terms on which the semiconductor industry builds the next generation of AI processors.
For 35 years Arm operated as the semiconductor industry’s neutral infrastructure layer: a company that designed processor blueprints, licensed them to others, and competed with no one. That changed on March 24, 2026, when Arm announced the Arm AGI CPU — a 136-core data-centre processor developed jointly with Meta — its first production silicon in the company’s history. Within weeks, the FTC had notified Arm of an antitrust investigation and issued a formal demand for document preservation, according to Tom’s Hardware reporting on the probe.
What the FTC is examining
The investigation focuses on a conflict that Arm’s customers — Qualcomm, Apple, and dozens of others — had privately flagged for months: if Arm is now competing directly in the markets it used to serve, what prevents it from degrading the quality of licenses it grants to rivals, or denying access altogether? The FTC’s specific concern, as first reported by Bloomberg on May 15, is whether Arm will “refuse or lower the quality of licenses for blueprints to develop central processing units” while simultaneously ramping up its own chip manufacturing.
A document preservation demand — a formal instruction to retain all relevant communications and business records — is a standard early step in an FTC investigation, but it signals that the agency is gathering evidence rather than simply monitoring from a distance. Arm confirmed it received the notification and said it was cooperating with the inquiry.
History shapes the concern
The probe does not emerge from a vacuum. In 2021, Arm’s then-parent SoftBank attempted to sell the company to NVIDIA for $40 billion, a deal that regulators in the US, EU, and UK blocked on competition grounds — precisely because an Arm owned by a chip manufacturer would face identical conflicts of interest. That deal collapsed in 2022. Arm went public on the Nasdaq in September 2023, and licensing revenue has grown as AI demand drove customers to redesign chips at an accelerating pace. The FTC’s move also follows Arm’s unsuccessful lawsuit against Qualcomm over licensing rights related to Qualcomm’s acquisition of chip design firm Nuvia — a case that Qualcomm won and that exposed the tensions in Arm’s model as its architecture has grown more valuable.
The regulatory context
The Arm probe is part of a broader shift in antitrust enforcement toward chokepoint control in the AI supply chain. As the EU’s sweeping inquiry into Big Tech’s AI operations demonstrated earlier this year, regulators in multiple jurisdictions are examining whether a small number of companies control the infrastructure — chips, cloud compute, model weights — on which the next wave of AI depends. Arm, by controlling the blueprint for the processors in most of the world’s devices, sits at the most fundamental layer of all. The FTC’s investigation places that question directly in front of American regulators for the first time.