US FTC has opened a formal antitrust investigation into Arm Holdings over its CPU licensing practices.
Regulators are examining whether Arm will refuse or degrade CPU blueprints for licensees while expanding its own chip business.
Arm, majority‑owned by SoftBank, announced a $15 billion annual revenue target from its own processor designs within five years.
Shares fell under 1% to $207.96 after the news, while Qualcomm continues its licensing dispute.