U.S. stock markets opened mixed on Tuesday, with the Dow Jones Industrial Average declining 0.35% at the opening bell. The S&P 500 edged down 0.03%, while the Nasdaq Composite remained virtually flat, gaining just 0.01%. The divergent performance across major indices signals cautious sentiment among equity traders as the trading session begins. Market participants are monitoring early price action for directional cues amid current macroeconomic conditions.