Among the lessons from this week's tech plunge, the risk of heavy concentration in a handful of stocks is an important takeaway for investors.

Polestar Automotive (NASDAQ: PSNY) has disappointed a lot of investors since its debut in June 2022. The electric vehicle (EV) maker went public by merging with a special purpose acquisition company ...

The artificial intelligence (AI) arms race is reaching breakneck speed. Tech giants are spending hundreds of billions to ...