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.

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.

Asian shares are trading mixed after Wall Street’s tech superstars tumbled as a competitor from China raised doubts over the recent artificial-intelligence market frenzy

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.

The Japanese conglomerate is in talks to spend up to $43 billion to boost the ChatGPT developer.

Some of the funding would be used to help cover OpenAI’s $18 billion commitment to the recently announced Stargate project.

Both Meta and Microsoft committed to huge investments in artificial intelligence, despite new Chinese software outperforming American rivals at a lower cost.

Wall Street are pointing mostly higher in premarket trading while more corporate earnings poured in a day after the Federal Reserve opted to leave its benchmark lending rate alone