Dow Rises Over 300 Points As Nvidia Surges: Investor Sentiment Improves, But Greed Index Remains In 'Fear' Zone - Amazon.com (NASDAQ:AMZN), Bristol-Myers Squibb (NYSE:BMY)

1. U.S. stocks closed higher; Dow gained over 300 points. 2. Nvidia shares jumped over 5%, buoyed by AMD's strong results. 3. Amazon earnings are anticipated today, impacting market sentiment. 4. Trade deficit widened significantly to $98.4 billion in December. 5. Fear & Greed Index indicates prevailing market fear at 39.6.