S&P 500 futures rose 0.3% and Nasdaq 100 futures gained 0.4% on Tuesday, while the Dow Jones hovered around the flatline, following strong gains of over 1% in the previous session. Investor sentiment remained upbeat, supported by corporate earnings and growing expectations of Federal Reserve rate cuts. Palantir shares surged nearly 6% in premarket trading after the company raised its annual revenue forecast for the second time this year. Pfizer advanced 2.4% after beating both earnings and revenue estimates. In contrast, Caterpillar fell 3.6% following an earnings miss, and Vertex Pharmaceuticals tumbled 13.8% after announcing it would not move forward with late-stage trials for its next-generation pain treatment. Meanwhile, megacap tech stocks were mostly higher before the opening bell, with Nvidia up 0.6%, Microsoft 0.5%, Apple 0.4%, Amazon 0.5%, Meta 0.3%, Broadcom 0.5%, and Tesla 0.4%, while Alphabet was little changed.