Beyond Nvidia: the search for AI's next breakthrough

For a few days, AI chip juggernaut Nvidia sat on the throne as the world's biggest company, but behind the its staggering success are questions on whether new entrants can stake a claim to the artificial intelligence bonanza. Nvidia, which makes the processors that are the only option to train generative AI's large language models, is now Big Tech's newest member and its stock market takeoff has lifted the whole sector. Even tech's second rung on Wall Street has ridden on Nvidia's coattails with Oracle, Broadcom, HP and a spate of others seeing their stock valuations surge, despite sometimes shaky earnings.