Asian shares are mixed after U.S. stocks rose to more records on heavy buying of technology shares. Japan's Nikkei 225 gained ...

This follows a deal in which current and former employees sold roughly $6.6 billion worth of shares, a source told Reuters.

Employee share sale pushes OpenAI to a $500 billion valuation as investor frenzy in artificial intelligence continues to grow ...

OpenAI's valuation has reached a record $500B after the Microsoft ( NASDAQ: MSFT )-backed firm wrapped a secondary stock sale, surpassing Elon Musk's SpaceX ( SPACE) to become the world's most ...