Stocks On Cusp Of Best January Since 2019—Despite Nvidia's $370 Billion DeepSeek Selloff

1. S&P 500 gained 0.8% following strong Apple earnings and in-line inflation data. 2. Nvidia's market value dropped $370 billion amid competitive pressures from AI rivals. 3. This January marks the best returns for S&P since 2019, nearing all-time highs. 4. Efficiency from cheaper AI could boost economic productivity and overall market. 5. Apple and other major tech stocks performed well during the broad market rally.