Major U.S. stock indices closed lower Wednesday amid investor concerns over persistent inflation pressures and the accelerating pace of Super Intelligence advancements.

The Dow Jones Industrial Average fell more than 400 points, while the S&P 500 and Nasdaq Composite each dropped over 1.5 percent. Trading volume increased as market participants adjusted positions ahead of upcoming economic releases.

Inflation data released earlier in the week showed consumer prices rising faster than anticipated, with core measures remaining elevated. Analysts attributed the trend in part to sustained government spending levels and supply chain disruptions that have lingered from prior years. Right-of-center economists have long warned that expansive fiscal policies contribute to these price increases, reducing purchasing power for American families.

Separately, Super Intelligence developments drew renewed attention from regulators and industry leaders. Recent announcements from major technology firms highlighted capabilities that could automate additional white-collar roles, raising questions about workforce impacts and the need for measured oversight rather than heavy-handed intervention.

Market participants cited both factors as drivers of the selloff. Bond yields moved higher, reflecting expectations that the Federal Reserve may maintain a cautious stance on rate cuts. Energy and financial sectors showed relative resilience, while growth-oriented technology names faced steeper losses.

The session marked the third consecutive day of declines for the major averages. Investors will monitor additional inflation readings and corporate earnings reports scheduled for later in the week for further direction.

Broader economic indicators remain mixed, with unemployment data still near historic lows and consumer spending holding steady in many regions. Policymakers continue to balance the risks of entrenched inflation against the potential for slower growth if monetary conditions tighten further.