Chipmaker Nvidia briefly grabbed title of world's most valuable company as it hit $3.92-trillion market value, surpassing the all-time high of $3.915 trillion hit by Apple in December 2024. Nvidia's market value settled on Thursday at $3.88 trillion, while Microsoft closed at $3.7 trillion and Apple settled at $3.189 trillion. Nvidia is still the world's most valuable company currently.