• U.S. stocks delivered mixed results in December 2025, with the S&P 500 essentially flat, narrowly snapping a seven-month winning streak.
  • December retail sales showed resilience with spending rising 4.3% year-over-year, but markets reacted with broader concerns about consumer momentum.
  • Leadership rotated away from mega-cap technology, with value and small-cap stocks gaining strength as investors reassessed crowded positions.

U.S. stocks extended losses slightly in late December 2025 following the release of retail sales data, with the S&P 500 finishing the month down 0.05%—a modest decline that nonetheless ended a seven-month winning streak. The December retail sales report, showing spending up 4.3% year-over-year, provided a mixed signal to investors already grappling with shifting Federal Reserve policy and economic uncertainties.

According to people familiar with the matter, the market's tepid response reflected deeper worries about consumer health despite the holiday resilience. Earlier in 2025, retail sales and consumer confidence had shown concerning weakening, with more people shopping but spending the same or less than in prior years. The December data, while robust, couldn't fully dispel those lingering doubts, especially amid disruptions from government shutdowns that complicated metric interpretation throughout September.

Efforts to sustain the late-2025 rally have hit a snag as leadership rotated away from concentrated technology holdings. The Nasdaq Composite lost 0.5% in December despite a strong annual gain, while the S&P 500 equal-weight index outperformed for the second consecutive month—a sign that investors are becoming more selective. "You can create your own ideas in this environment," one market strategist noted, pointing to the broadening participation. Value and small-cap stocks showed particular strength, with the Morningstar US Value Index rising 3.06% in November and small-caps trading at a 15% discount to fair value, compared to large-caps at just 3%.

Without sustained consumer momentum, the market might face correction pressures entering 2026, especially with midterm election years historically experiencing weakness. The Fed's third rate cut of 2025, reducing the federal funds target range to 3.50%–3.75% in mid-December, had already been priced in, leaving retail data as a fresh focal point. Attempts to reach analysts for further comment were unsuccessful by press time.

Correction: An earlier version misstated the S&P 500's December performance; it was down 0.05%, not flat.