Nvidia Corp. added $442 billion to its market value on Thursday, marking the second-largest one-day gain in stock market history. Shares jumped 8.7%, the biggest advance since April 2025, when the company was valued at less than half its current worth. The surge trails only Microsoft Corp.'s $450 billion gain from less than a month prior.

Nvidia is now the world's largest company, with a valuation around $5.5 trillion.