Top Stock Movers Now: Nvidia, Halliburton, Vistra, and More

1. Major U.S. indexes declined as Fed Chair Powell comments raised concerns. 2. Energy sector gained due to rising oil prices lifting major producers' shares. 3. Halliburton (HAL) performed well amid positive energy market conditions. 4. Tech sector led losses with significant declines in key companies. 5. Gold prices climbed to a new record amid economic uncertainty.