U.S. stocks maintained modest gains on Tuesday as investors evaluated a wave of earnings reports preceding significant economic announcements. The S&P 500 rose by 0.3% to 6,400, while the Nasdaq 100 advanced 0.5% to surpass 23,400, both hitting record highs. Meanwhile, the Dow remained nearly unchanged. Union Pacific saw a 2% increase following its agreement to acquire Norfolk Southern, marking the largest rail deal in U.S. history. In the technology sector, key players showed positive movements as they prepared for earnings releases from some of the world's largest market capitalizations this week, including Microsoft, Meta, Amazon, and Apple. Conversely, companies like United Health, which dropped 6%, P&G at a 1% decrease, Merck & Co falling 8.5%, UPS down by 7%, and Boeing sliding 1.5%, all experienced significant declines after announcing their results prior to market opening. New labor market data began trickling in with job openings falling short of expectations, alongside other updates expected this week, including U.S. GDP figures anticipated to show a strong recovery. The Federal Reserve is predicted to maintain current interest rates in tomorrow's meeting, as the strong economic environment aligns with inflationary pressures from increased U.S. tariffs.