KEY POINTS
  • The Federal Trade Commission is suing to block Nvidia's $40 billion acquisition of Arm from Softbank on antitrust grounds.
  • The U.S. action is the biggest hurdle the transaction has faced yet, and threatens whether the deal will be completed.
  • Arm's role in the chip industry was historically as a neutral supplier, raising concerns that Nvidia could cut off competitors from essential Arm technology.
Nvidia CEO Jensen Huang speaks during Mobile World Congress Americas in Los Angeles on Oct. 21, 2019.

The Federal Trade Commission on Thursday sued to block Nvidia's $40 billion acquisition of Arm from SoftBank on antitrust grounds.

The deal has faced scrutiny from regulators since it was announced last year. The U.S. action is the biggest hurdle it has faced yet, and threatens whether the deal will be completed.