SoftBank is in talks to invest as much as $25bn into OpenAI. The deal would make it the start-up’s biggest financial backer.

US stocks rose on Thursday, with the Nasdaq (^IXIC) and S&P 500 (^GSPC) eyeing a comeback as investors digested news that the ...

As delegates gathered for champagne at a US stock market hub on the Davos Promenade to watch Donald Trump's inauguration, ...