SoftBank Group's attempt to sell U.K. chip designer Arm to U.S. chipmaker Nvidia is hitting regulatory roadblocks in major markets, as the blockbuster deal has raised antitrust and national security concerns among policymakers.
The Arm sale is valued at up to $40 billion and is subject to approval by authorities in several jurisdictions, including Britain, China, the United States and European Union, SoftBank Group said.