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SoftBank completes $41 billion investment in OpenAI, deepening bet on AI

SoftBank Group said it has completed a $41 billion investment in OpenAI, marking one of the largest private funding rounds ever and giving the Japanese group an ownership stake of about 11% in the maker of ChatGPT.

The move underscores SoftBank CEO Masayoshi Son’s increasingly aggressive push into artificial intelligence, which he has described as an “all in” bet. Son is positioning SoftBank to capitalise on booming demand for AI computing power, spanning both software and the physical infrastructure that underpins advanced models.

SoftBank said it completed an additional $22.5 billion investment on Wednesday, following an earlier $7.5 billion injection in April. OpenAI also secured an expanded syndicated co-investment of $11 billion from other backers as part of the round. In March, SoftBank had agreed to invest up to $40 billion into a for-profit OpenAI subsidiary, with the funding structured through a mix of direct capital and syndicated investments.

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The transaction initially valued OpenAI at about $300 billion on a post-money basis. However, a subsequent secondary share sale completed in October pushed OpenAI’s valuation to roughly $500 billion, according to PitchBook data. CNBC first reported the completion of the latest investment earlier in the day.

The deal comes as artificial intelligence has become the central driver of global technology investment, reshaping corporate strategies and investor expectations. OpenAI has emerged as a key beneficiary of that shift, sitting at the heart of an industry-wide surge in AI spending.

OpenAI is also a core participant in “Stargate,” a large-scale, multi-year data centre initiative being developed alongside Oracle and other partners. The project aims to support next-generation AI models and is backed by major investors including SoftBank, further linking the group’s capital deployment to the infrastructure required for future AI growth.

SoftBank to Acquire DigitalBridge in $4 Billion Deal to Strengthen AI Infrastructure Strategy

SoftBank Group has agreed to acquire digital infrastructure investor DigitalBridge Group in a deal valued at $4 billion, the companies announced on Monday. The acquisition marks another step in SoftBank’s effort to reshape its portfolio around artificial intelligence and the computing infrastructure that supports it.

Under the terms of the agreement, SoftBank will pay $16 per share for DigitalBridge, representing a 15% premium over the company’s closing price on Friday. The offer values DigitalBridge at approximately $2.92 billion, with the transaction expected to close in the second half of next year. Following the announcement, DigitalBridge shares rose about 9.7% to $15.27, extending gains after a 45% rally earlier this month when takeover talks were first reported.

The deal significantly expands SoftBank’s exposure to digital infrastructure assets, including data centers, cell towers, fiber networks, small-cell systems and edge infrastructure. DigitalBridge’s portfolio includes major assets such as Vantage Data Centers, Zayo, Switch and AtlasEdge, positioning the firm as a key player in the backbone of global data and connectivity.

SoftBank founder Masayoshi Son has repeatedly emphasized the importance of computing power in enabling next-generation AI applications. The acquisition aligns with his broader vision to capitalize on surging demand for data processing capacity driven by artificial intelligence workloads.

Industry reaction was cautiously optimistic. Jacob Yahiayan, CEO of Urban Logistic Advisory Services, an investor in DigitalBridge, described the acquisition as “a milestone in solving critical infrastructure issues,” while noting that SoftBank remains far from controlling a significant share of the global hardware- and software-as-a-service market.

Founded in 1991 as Colony Capital, DigitalBridge shifted its strategy under CEO Marc Ganzi, pivoting away from traditional real estate toward digital infrastructure and rebranding in 2021. Ganzi will continue to lead DigitalBridge as a separately managed platform following the acquisition.

As of September 30, DigitalBridge managed approximately $108 billion in assets, making it one of the largest dedicated investors in the digital infrastructure ecosystem. The company is also involved in the Stargate project, alongside OpenAI, Oracle and Abu Dhabi-based investor MGX, a large-scale computing initiative aimed at supporting advanced AI development.

SoftBank Shares Drop as Nvidia Stake Sale Reveals Deep AI Funding Demands

SoftBank Group (9984.T) shares plunged as much as 10% on Wednesday, after the company’s $5.8 billion sale of its Nvidia stake raised questions about how it will finance its massive new AI investment spree, including major commitments to OpenAI.

The Japanese conglomerate is preparing to fund a $22.5 billion follow-on investment in OpenAI, alongside a $6.5 billion acquisition of chipmaker Ampere and a $5.4 billion purchase of ABB’s robotics division. Analysts estimate these moves bring SoftBank’s recent spending commitments to over $41 billion.

Despite holding 4.2 trillion yen ($27.9 billion) in cash at the end of September, CreditSights analyst Mary Pollock said the group’s short-term funding needs remain “substantial.” She added that SoftBank will likely need to “be proactive” in sourcing additional liquidity to sustain its AI push.

The selloff also reflects investor concerns that tech valuations are overstretched, even as SoftBank doubles down on its “all-in” strategy for artificial intelligence. Founder and CEO Masayoshi Son, long known for his high-risk investing style, remains confident that AI will define the next era of growth.

“The Nvidia position was large, liquid, and easy to monetize,” said Rolf Bulk, analyst at New Street Research, noting that SoftBank likely sees more upside by reallocating funds toward OpenAI.

SoftBank’s shares, which had quadrupled between April and October, closed the day down 3.46% after paring earlier losses. Nvidia and Arm Holdings, the chip designer SoftBank controls, also slipped around 3% overnight.

To fuel its aggressive investment agenda, SoftBank has raised funds through bond issuances and multi-billion-dollar loans, including an $8.5 billion facility for OpenAI and a $6.5 billion bridging loan for Ampere. CFO Yoshimitsu Goto said the group’s debt ratio of 16.5% is “actually a bit too safe,” signaling room for more leverage.

SoftBank’s Vision Fund CFO Navneet Govil defended the spending, arguing that today’s AI sector is fundamentally different from past speculative bubbles: “AI companies are generating meaningful revenues. The capital expenditure boom is driven by real demand.”