In his newly built palace near Tokyo, lined by stone statues of Roman emperors and surrounded by an 18-hole golf course, Masayoshi Son was stewing. After declaring for years the imminent arrival of the artificial-intelligence revolution,

Seattle-area company Helion Energy gets $425 million from investors including Sam Altman and Softbank to pursue clean energy's "Holy Grail."

(Reuters) - Helion, a startup working to generate electricity from nuclear fusion, on Tuesday said it has raised $425 million in venture funding from a group of investors including SoftBank Group's Vision Fund 2.

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.

Here are the top takeaways from Trump’s press conference. One of Trump’s first executive actions as the 47th president of the nation was to grant pardons and commutations to all of the defendants convicted over the Jan. 6 Capitol riot, sparking criticism from Democrats who denounced the move.

Shares of Cipher Mining were trading higher in the after-hours market following news of a $50 million private investment in public equity deal from SoftBank Group. After the bell Thursday, shares of Cipher Mining rose 19% to trade at $5.60. The stock finished the day's regular session with a 4.4% gain, closing at $4.70.

The initiative announced by President Donald Trump will aim to "secure American leadership in AI" while also creating jobs and economic benefit.

Helion, a startup working to generate electricity from nuclear fusion, on Tuesday said it has raised $425 million in venture funding from a group of investors including SoftBank Group's Vision Fund 2.

OpenAI is in talks for an investment round to raise nearly $40 billion that would value the AI startup at up to $340 billion, the Wall Street Journal reported on Thursday.

Tech bros have taken to X in an extraordinary public spat to question each other’s financial muscle over Donald Trump’s $800b AI joint venture. Elon Musk said, “they don’t have the money”.

Reports began circulating this week that SoftBank is in talks to invest as much as $25 billion into OpenAI, a move that would position the Japanese operator as the generative AI (gen AI) company’s biggest financial backer.

SoftBank's investment in OpenAI may position the company as the world's joint-second most valuable private tech firm after SpaceX.