The $500 billion Stargate project will be critical to "maintain American leadership in AI," one of the partners said in a statement.

Masayoshi Son founded SoftBank in 1981. It has invested millions in some of Silicon Valley's biggest tech companies.

From left: Masayoshi Son, chairman and CEO of SoftBank; Larry Ellison, executive chairman of Oracle; and Sam Altman, CEO of OpenAI listen to President Trump speak at the White House on Jan. 21 ...

“I am Masayoshi Son, and SoftBank is not a bank ... billion in more than 250 companies in the U.S. These include Uber, Nvidia, Sprint, OpenAI (developer of ChatGPT) and a host of start ...

Shares of NVIDIA Corporation (NASDAQ: NVDA) and other AI stocks such as Dell Technologies Inc. (NYSE: DELL), Oracle Corporation (NYSE: ORCL) and Arm Holdings plc (NASDAQ: ARM) are trading higher Tuesday buoyed by reports of a major private sector investment in artificial intelligence infrastructure.

Masayoshi Son, the Japanese tycoon helming US President Donald Trump's big new AI push, is the son of an immigrant pig farmer with a spectacular but also sketchy investment record.

Shares of SoftBank Group Corp. jumped as much as 8.1% after US President Donald Trump announced a multi-billion dollar push by the Japanese company, OpenAI and Oracle Corp. to build AI infrastructure in the US.

SoftBank CEO Masayoshi Son speaks at a White House press conference on President Donald Trump's plan for AI infrastructure investment. MASA SON, SOFTBANK: Oh, thank you. That would be helpful. That's good.

Trump was joined at the conference by Larry Ellison, co-founder and executive chairman of Oracle; Masayoshi ... and Nvidia (NASDAQ: NVDA) is the joint venture's technology partner, said Son.

The president joined leaders from OpenAI, Oracle and SoftBank to launch the ambitious project, but questions remain about its implementation, offerings and timeline.

SoftBank (SFTBY) is reportedly considering a massive investment of up to $25 billion in Microsoft (MSFT)-backed OpenAI, according to sources

DeepSeek threatens to disrupt the AI sector in a similar way to how Chinese companies have already upended industries such as EVs and mining.