Arm is hoping for a valuation of up to $70 billion in the IPO, which will launch on the Nasdaq next month. Arm and its owner SoftBank Group (9984.T) have set aside 10% of the shares to be sold in the IPO for its clients, the sources said. Its close relationship with Arm has helped it design chips that curbed its reliance on Intel as a supplier. Many technology companies that seek to make their own chips using Arm's designs turn to TSMC for its low-cost manufacturing. None of these companies' investments in Arm's IPO are certain.

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Persons: Dado Ruvic, Jack Gold, SoftBank, Apple spokespeople, Jay Lee, Masayoshi Son, Son, TSMC, Dylan Patel, Milana Vinn, Stephen Nellis, Max Cherney, Greg Roumeliotis, Matthew Lewis Organizations: REUTERS, FRANCISCO, Arm Holdings, Apple, Intel, Nvidia, Microsoft, Samsung Electronics, Reuters, Nasdaq, Gold Associates, SoftBank, Devices Inc, APPLE, SAMSUNG, Samsung, MICROSOFT, Devices, Vision Fund, Thomson Locations: Switzerland, Japan, New York, San Francisco