SoftBank Group's Arm Holdings launched the roadshow for its blockbuster initial public offering (IPO) on Tuesday as the chip designer tries to convince investors it is worth as much as $52 billion in this year's biggest share sale.

Arm kicked off its roadshow in Baltimore, where influential asset manager T Rowe Price is headquartered, underscoring the fund manager's significance in big IPOs.

T Rowe Price has been an anchor investor in some of the biggest stock market debuts, including that of electric car-maker Rivian Automotive, which was valued at $66.5 billion in its IPO in 2021. Arm's IPO is the largest since then.