SoftBank Shares Surge Over 12% as AI Rally Extends Into Second Day

CNBC reported Friday that SoftBank shares surge continued into a second consecutive session, with the Japanese technology conglomerate climbing more than 12% as AI-linked enthusiasm swept through global markets.

A Two-Day Rally Adds Massive Market Value

The Friday jump followed an even larger 20% single-session gain on Thursday. That prior move alone added more than $35 billion to SoftBank’s market capitalization. The back-to-back moves reflect a wave of investor enthusiasm tied to the broader AI spending narrative. Nvidia’s blockbuster earnings earlier in the week provided the initial catalyst, lifting sentiment across AI-adjacent stocks sharply.

Also Read: Nvidia Earnings Beat Drives AI Stock Surge Across Markets

Arm Holdings Drives Much of the Momentum

A significant portion of the SoftBank rally traces directly to its majority-owned subsidiary Arm Holdings. Arm’s shares climbed more than 16% during overnight U.S. trading, following a gain exceeding 15% the session before. Arm’s chip architecture sits at the heart of AI servers and data centers that run on Nvidia hardware. That positioning has made Arm a direct beneficiary of surging infrastructure investment across the industry.

Also Read: Arm Holdings Jumps on AI Server Demand as Chip Stocks Rally

OpenAI IPO Speculation Adds Another Layer

SoftBank’s growing stake in OpenAI is also drawing investor attention. The company has committed more than $30 billion to the ChatGPT developer and recorded roughly $45 billion in related gains during its fiscal year ended March. Speculation that OpenAI could file for a public offering within weeks has further brightened the outlook for SoftBank shareholders. Vey Sern Ling, senior equity advisor at UBP, told CNBC the share price movement largely mirrors the performance of SoftBank’s key holdings, including Arm and OpenAI.

Analysts Urge Caution on Holding Company Structure

Despite the excitement, Ling offered a measured note. He explained to CNBC that holding companies like SoftBank typically trade at a discount to the combined value of their underlying assets. Shareholders rarely capture full value from the assets a holding company owns, he said, making sum-of-the-parts analysis a reason for caution rather than uncritical optimism. The warning reflects a structural reality that has long complicated SoftBank’s valuation story, even during periods of strong portfolio performance.

Read Next: Nvidia Posts Record Revenue as Data Center Demand Accelerates