Nvidia sales spike on AI demand
1. Nvidia forecasts strong revenue of $43 billion, surpassing estimates. 2. AI chip demand continues to surge despite recent market volatility. 3. First-quarter gross margins expected to decline to 71%, below forecasts. 4. Nvidia's stock has risen over 400% in two years amid AI growth. 5. Concerns linger about competitive pressures from China's DeepSeek innovation.