Summary:
- Nvidia, a leading semiconductor company, experienced a significant loss in its market capitalization, plummeting by $278 billion in a single day.
- The company's woes were further exacerbated by a new subpoena issued by the U.S. Department of Justice, adding to the concerns of investors.
- The article discusses the factors contributing to Nvidia's market value decline, including the challenging macroeconomic environment, supply chain issues, and regulatory scrutiny.