Tech stocks tumble for a second day. Here's what's behind the selloff.

Tech stocks tumble for a second day. Here's what's behind the selloff.
FacebookXWhatsAppEmail

A major technology stock selloff stretched into a second day Tuesday as investors questioned whether artificial intelligence will generate the profits that have fueled lofty valuations for companies such as Alphabet, SpaceX and Nvidia.The tech-heavy Nasdaq Composite shed 580 points, or 2.2%, to c...