The article discusses the recent decline in NVIDIA’s stock price and market capitalization following the news of a subpoena from the US Department of Justice regarding an antitrust probe into the company’s dominance in the artificial intelligence (AI) chip market. NVIDIA, a leading manufacturer of graphics processing units (GPUs) used in AI applications, has seen its market value drop by over $140 billion since the probe was announced. The investigation aims to determine whether NVIDIA has engaged in anti-competitive practices that have stifled innovation and limited consumer choice in the rapidly growing AI chip market. Analysts suggest that the probe could potentially lead to fines, restrictions, or even a forced divestiture of certain business units if NVIDIA is found guilty of antitrust violations. However, the company maintains that its practices are lawful and pro-competitive, and it plans to cooperate with the investigation. The article highlights the significance of AI technology and the intense competition among tech giants to gain a foothold in this lucrative market.