The S&P 500 (SNPINDEX:^GSPC) rose 0.62% to 6,944.82, the Nasdaq Composite (NASDAQINDEX:^IXIC) added 0.65% to 23,547.17 as Big Tech extended its New Year rally, and the Dow Jones Industrial Average (DJINDEX: ^DJI) gained 0.99% to 49,462.08, a record high as it closed above 49,000 for the first time. Market movers Palantir Technologies (NASDAQ:PLTR) jumped on the back of analyst upgrades and enthusiasm for agentic AI. Sandisk Corporation (NASDAQ:SNDK) soared after Nvidia (NASDAQ:NVDA) CEO Jensen Huang said ...