Nvidia’s $4 Trillion Juggernaut vs AMD’s OpenAI Jackpot – Inside 2025’s Epic AI Stock Showdown
Nvidia’s market value briefly topped $4 trillion in 2025, making it the world’s most valuable company as shares tripled year-on-year. AMD stock jumped 30% in a day after announcing a major AI chip deal with OpenAI, reaching multi-year highs. Nvidia retains about 90–94% of the GPU market, but AMD’s OpenAI partnership raised its profile as a challenger. Both stocks trade at high valuations, with analysts broadly bullish but warning of risks.