Chinese start-up DeepSeek created a cost-efficient and powerful artificial intelligence model that appears to rival U.S.

With the dominant iPhone franchise, Apple has grown into one of the largest companies in the world in the last two decades.

Rebounding tech stocks drove U.S. indexes higher a day after they tumbled on doubts about the artificial intelligence frenzy.

Some on Wall Street saw Monday's nearly 17% plunge for Nvidia's stock as an opportunity rather than a signal of pending doom, ...