Small-Cap Stocks Mark Strongest First-Half Rally in Decades

The Russell 2000 index (RUT), which tracks small and mid-cap U.S. companies, has captured significant attention with its exceptional performance in the first half of 2026. Gaining approximately 22% in the first six months of the year, the index recorded its strongest first-half performance since 1991. This surge is interpreted as a significant comeback for small-cap companies, which have largely been overshadowed by large-cap technology stocks in recent years.

Several factors underpin this remarkable rally. Analysts point to the trickle-down effect of artificial intelligence (AI) investments, benefiting not only major tech giants but also smaller firms within the supply chain. Semiconductor and semiconductor equipment companies, in particular, have seen gains exceeding 400%, accounting for 16 of the top 50 performers in the Russell 2000 during this period. Furthermore, the narrowing of the valuation gap for small-cap stocks and improving fundamental indicators have also fueled the rally.

The Federal Reserve's (Fed) easing cycle in 2025 also provided crucial support for small-cap companies. As interest rates were lowered from 5.25% to the 3.50%-3.75% range, the cost of floating-rate debt, held by approximately 40% of Russell 2000 companies, decreased. This provided significant relief to the balance sheets of these companies, which are typically more sensitive to higher borrowing costs. Market participants began to recognize the U.S. domestic economy's unexpected resilience, boosting optimism towards small-cap equities.

The Russell 2000's performance outpaced other major indices in the first half of 2026. During the same period, the S&P 500 index advanced approximately 9.6%, the technology-heavy Nasdaq Composite gained 12.8%, and the Dow Jones Industrial Average rose 8.9%. This indicates a shift in market leadership from dominant technology companies to a broader range of firms, particularly those with greater exposure to the domestic economy. As market breadth expanded, capital was observed rotating away from a handful of mega-cap names into the broader market.

This development holds broader economic and political significance. Resilient economic growth in the U.S. and government initiatives such as the CHIPS Act and the Infrastructure Investment and Jobs Act, aimed at domestic investment, have created a supportive environment for small-cap companies. Given that smaller companies typically have more domestic market exposure, they are better positioned to benefit from such policies. Considering that small-cap stocks tend to perform better during the early stages of economic expansions, the current environment offers fertile ground for these companies.

Analysts and market expectations suggest that small-cap stocks could continue to outperform their large-cap counterparts in the upcoming period. According to LPL Financial, consensus earnings growth forecasts for Russell 2000 companies have risen to 38% from 23% at the beginning of the year. Analysts at BofA Securities anticipate earnings per share growth of 25% for small-cap companies and 36% for mid-cap companies in the third quarter, compared to 25% for large-cap firms. However, some institutions, like Goldman Sachs, caution that the rally's pace might slow due to elevated valuations and potential interest rate hike risks. Specifically, the semi-annual reconstitution of Russell indices and potential Fed rate increases could have a more significant impact on small companies with higher floating-rate debt.