U.S. equity markets opened higher on Monday, December 15, 2025, signaling a cautious rebound after a challenging end to the previous week, which saw significant declines in technology shares. Investors are now navigating a crucial week packed with economic data releases and corporate earnings, all while preparing for the year-end holiday season.Market Indexes Show Early StrengthAs trading commenced this Monday, major U.S. stock indexes demonstrated positive momentum. The S&P 500 rose 0.3% in early trading, ...