Nvidia briefly surpassed a $4 trillion market cap on Wednesday before closing at $3.97 trillion, according to CNBC. The chipmaker became the world’s most valuable company, surpassing Microsoft and Apple, and is the first to reach a $4 trillion market value during trading. The California-based company has gained more than 15% in the past month and 22% year-to-date. Nvidia dominates the generative AI hardware space, with soaring demand since the launch of ChatGPT boosting its valuation more than fifteenfold in five years. Despite U.S. chip restrictions to China costing an estimated $8 billion in sales, CEO Jensen Huang said the $50 billion China market is now “effectively closed” to U.S. firms. Nvidia has rebounded from earlier fears that China's DeepSeek AI model could reduce demand for GPUs.