Nvidia becomes world's most valuable company | 18 June 2024 | Nvidia became the world's most valuable company on Tuesday, dethroning tech heavyweight Microsoft, as its chips continue to play a central role in a race to dominate the market for artificial intelligence. Shares of the chipmaker climbed 3.2% to $135.21, lifting its market capitalization to $3.326 trillion, just days after overtaking iPhone maker Apple to become the second most valuable company. The stock has surged about 173% so far this year.