SoftBank will partner with South Korea's Cosmos Lab and DeltaX to enable mass production of large-scale battery cells from the fiscal year starting next April. SoftBank Group's mobile unit said it plans to begin large-scale battery cell manufacturing at its plant in Sakai, Osaka Prefecture, to address growing power demand for AI services. SoftBank Corp. will partner with South Korea's Cosmos Lab and DeltaX to enable mass production from the fiscal year starting next April, the company said in a statement Monday. The aim is to output energy storage systems at a scale of one gigawatt-hour per year, SoftBank said, which would make it one of the largest facilities in Japan, according to data from BloombergNEF. SoftBank could scale up to a capacity of several GWh, Bloomberg reported last month.

SoftBank CEO Masayoshi Son (left) and OpenAI CEO Sam Altman attend an event in Tokyo in February 2025. SoftBank's investment gain on OpenAI stood at an estimated $19.8 billion as of December. SoftBank Group sprang back to a quarterly profit after investment gains from OpenAI neared $20 billion, a promising start for one of CEO Masayoshi Son's signature gambles alongside ByteDance and Alibaba Group Holding. The Tokyo-based company has invested about $34.6 billion in OpenAI, accumulating an 11% stake as of December, and has been in talks to invest as much as $30 billion more in a round that would value the startup at about $750 billion to $830 billion. As of December, SoftBank's investment gain on OpenAI stood at $19.8 billion, the company said Thursday.

SoftBank Group is in discussions to invest as much as $30 billion more in OpenAI, a sharp increase in commitment that reflects founder Masayoshi Son's ambitions to play a central role in developing artificial intelligence. The Japanese company, already one of the ChatGPT-maker's biggest backers, is in deliberations to commit more capital toward the fast-growing startup, people familiar with the matter said. The maximum amount SoftBank is considering is $30 billion, one of the people said, asking to remain anonymous to discuss private talks. They cautioned that the discussions are fluid and the amount of funding could change. SoftBank's shares rose 5.8% in Tokyo on Wednesday. Son has been unwinding positions to increase its stake in OpenAI and ready capital for sweeping investments aimed at injecting AI in all devices.

Masayoshi Son, chairman and chief executive officer of SoftBank Group, speaks during the Future Investment Initiative (FII) Institute Priority Asia conference in Tokyo in December. SoftBank Group has halted talks about an acquisition of U.S. data center operator Switch, a setback to founder Masayoshi Son's ambition to roll out Stargate artificial intelligence infrastructure, according to people familiar with the matter. For months, Son pursued a deal of around $50 billion for Switch, convinced that direct control of the latter's network of energy-efficient data centers would help the $500 billion Stargate push to generate computing power for partner OpenAI. But earlier this month, Son conceded that a full acquisition was off the table and scrapped a planned January announcement, the people said, asking not to be named because the matter is private. The two sides remain in active discussions about a partial investment or a partnership, they said. In a time of both misinformation and too much information, quality journalism is more crucial than ever.

Having made colossal profits as well as losses on previous investments, founder Masayoshi Son has pivoted SoftBank toward artificial intelligence. Japanese tech investor SoftBank said Wednesday that its stake in OpenAI is now around 11% after completing the second stage of a $41-billion investment in the maker of ChatGPT. Having made colossal profits as well as losses on previous investments, flamboyant founder Masayoshi Son has pivoted SoftBank toward artificial intelligence. SoftBank had announced in April its planned investment of up to $40 billion in Open AI, and on Wednesday it said that the second tranche of $22.5 billion was completed. The final investment reached $41 billion and includes $30 billion from SoftBank's Vision Fund plus $11 billion from other third-party co-investors, it said.

Acquisition would further expand SoftBank's investments in artificial intelligence as it tries to center itself in the boom SoftBank Group will acquire digital infrastructure investor DigitalBridge Group in a deal valued at $4bn, the companies said on Monday, as the Japanese investment firm looks to deepen its AI-related portfolio. The acquisition would expand SoftBank's exposure to digital infrastructure as the Japanese conglomerate is positioning its portfolio to focus on artificial intelligence. SoftBank's billionaire founder Masayoshi Son is seeking to capitalize on surging demand for the computing capacity that underpins artificial intelligence applications. DigitalBridge invests in digital infrastructure sectors such as datacenters, cell towers, fiber networks, small-cell systems and edge infrastructure, with a portfolio including companies such as Vantage Data Centers, Zayo, Switch and AtlasEdge. Founded in 1991 as real estate-focused Colony Capital, the firm pivoted under CEO Marc Ganzi into digital infrastructure and rebranded as DigitalBridge in 2021 after shedding most of its legacy property assets.

SoftBank Group Chairman Masayoshi Son speaks in Tokyo earlier this month. Sources have said the group is considering acquiring data-center operator Switch. The move would give it outright ownership of a large portfolio of the facilities at a time when demand for their computing power is growing rapidly. SoftBank Group is studying potential acquisitions including data-center operator Switch, as billionaire founder Masayoshi Son ramps up the search for deals that can help it ride the artificial intelligence-fueled boom in digital infrastructure, people with knowledge of the matter have said. The Japanese company has held discussions with Switch leadership and has been conducting due diligence on the closely held company, the people said, asking not to be identified because the information is private.

Masayoshi Son, chairman and chief executive officer of SoftBank Group, speaks during the Future Investment Initiative Institute Priority Asia conference in Tokyo on Monday. SoftBank Group is in talks to acquire DigitalBridge Group, a private equity firm that invests in assets such as data centers, as it seeks to take advantage of an AI-driven boom in digital infrastructure, according to people with knowledge of the matter. The Japanese conglomerate is negotiating a potential deal to buy New York-listed DigitalBridge and take it private, the people said, asking not to be identified because the information is confidential. Shares of DigitalBridge have fallen 13% this year, giving the company a market value of about $1.8 billion. They rose as high as 35% on the news and were last trading at $12.63 at 10:40 a.m. in New York. SoftBank's billionaire founder Masayoshi Son is trying to capitalize on soaring demand for the computing capacity that underpins artificial intelligence applications.

Masayoshi Son, chairman and chief executive officer of SoftBank Group, speaks during the Future Investment Initiative (FII) Institute Priority Asia conference in Tokyo on Monday. SoftBank Group founder Masayoshi Son said he wouldn't have sold off Nvidia shares if his company had unlimited money to bankroll its next investments in artificial intelligence, which include a big bet on OpenAI. Son, addressing for the first time the surprise November disclosure that SoftBank had unloaded its entire stake in the world's most valuable company, also slammed talk of an AI investment bubble. The Japanese company simply needed to raise capital to fund projects including data center construction, he told a forum in Tokyo Monday. I don't want to sell a single share. I just had more need for money to invest in OpenAI" and other projects, Son said during the FII Priority Asia forum.

SoftBank shares have plunged around 40% since late October as it sits at the forefront of a global AI selloff. Growing unease over frothy artificial intelligence valuations is weighing on shares of SoftBank Group, which traders increasingly view as a proxy for privately held OpenAI. The Japanese tech investor sits at the forefront of a global AI selloff amid worries about new pressure on OpenAI following Alphabet's Gemini 3.0 debut. SoftBank shares have plunged around 40% since late October, erasing over ¥16 trillion ($102 billion) in market value, as its founder Masayoshi Son prepares to double down on OpenAI and the infrastructure that supports it. SoftBank has ridden the global AI investment boom faster than any other Japanese company.