Arm, a UK-based chip design company under Japan's SoftBank Group, has filed for an IPO with the US Securities and Exchange Commission this week, aiming to go public on the New York Stock Exchange. Arm is a cornerstone company of the mobile era, with its chips widely used in consumer electronics such as smartphones. SoftBank plans to raise funds for Arm through its US listing, which is expected to be the largest this year with a valuation of $60-70 billion. Arm aims to become the processor cornerstone of the AI era and intends to use the IPO proceeds to invest in AI startups. The listing of Arm is of great significance to SoftBank, as it can bring returns to its fund investors and provide SoftBank with more capital for investment in the AI sector.