Trump was joined by Oracle founder Larry Ellison, OpenAI CEO Sam Altman, and SoftBank CEO Masayoshi Son, who said the investment would start with $100 billion, plus a goal of $500 billion over the course of four years.

President Donald Trump talked up a joint venture investing up to $500 billion for infrastructure tied to AI by a new partnership formed by OpenAI, Oracle and SoftBank.

The president said it will be the largest AI infrastructure ever built and that it will help counter technology threats from China and other countries.

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.

SoftBank CEO Masayoshi Son's plan to invest billions in AI in the United States shows one way to handle the new Trump administration: go big and deal with the details later.

The investment brings together an alliance of tech giants. While SoftBank and OpenAI are lead partners—with SoftBank handling financials and OpenAI managing operations—Oracle and MGX have also joined as equity funders.

SoftBank Group shares jumped after the company and ChatGPT-maker OpenAI announced plans to invest up to half a trillion dollars in artificial-intelligence infrastructure in the U.S. Shares rose 8.8% to 10,060 yen, or equivalent to $64.69, on Wednesday in Tokyo, after climbing as much as 9.2% earlier, to their highest level since July.

SoftBank CEO Masayoshi Son's plan to invest billions in AI in the United States shows one way to handle the new Trump administration: go big and deal with the details later. For a Japan Inc anxious ab

SoftBank CEO Masayoshi Son called the launch of Stargate the "beginning of a golden age," aligning with Trump’s vision for the US under his leadership. Son also committed to investing $100 billion in US projects over the next four years,

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.

At the core of this initiative is the formation of a new company, The Stargate Project, a joint venture between OpenAI, SoftBank, Oracle, and MGX. Over the next four years, this project will invest an astonishing $500 billion to develop cutting-edge AI infrastructure in the U.S., aiming to secure the country’s leadership in artificial intelligence.