S&P 500 Gains and Losses Today: Palantir Plummets On Lingering Defense Spending Fears

Market Overview - Major U.S. equities indexes showed mixed performance as investors struggled to recover from last week's selloff, particularly influenced by President Trump's tariff comments on Canada and Mexico [2][3][10] - The S&P 500 decreased by 0.5%, marking its third consecutive losing session, while the tech-focused Nasdaq fell by 1.2% [3][10] Company Performances - Palantir Technologies (PLTR) experienced a significant decline of 10.5% due to concerns over potential defense budget cuts, resulting in a nearly 25% drop from its record high [4] - Super Micro Computer (SMCI) saw an 8% drop ahead of a deadline for delayed financial reports, with potential delisting risks if further delays occur [5] - Nuclear power companies, including Constellation Energy (CEG), Vistra (VST), and GE Vernova (GEV), fell by 5.9%, 5.1%, and 3.7% respectively, following news of Microsoft potentially canceling leases for data centers [6] Notable Gainers - Walgreens Boots Alliance (WBA) shares surged by 6.3% after reports of private equity firm Sycamore Partners seeking financing for a buyout [7][10] - Nike (NKE) shares increased by 4.9% following an upgrade from Jefferies, with analysts projecting a potential 40% increase in stock value [8] - Berkshire Hathaway (BRK.A; BRK.B) shares rose by 4.1% after reporting a 70% increase in fourth-quarter operating earnings, with full-year operating earnings for 2024 up by 27% [9]