Key Highlights

Small-cap stocks have posted their best first-half performance in 35 years, with the Russell 2000 index outperforming large-cap benchmarks over the recent stretch leading into the end of June 2026. The milestone marks a significant shift in market breadth after a long period of large-cap dominance.

The broadening of the artificial intelligence investment theme appears to be a key driver behind this outperformance, as the benefits of AI-related capital spending and productivity gains increasingly extend beyond the mega-cap technology names that have dominated headlines for much of the past several years.

Smaller companies, which often carry greater sensitivity to domestic economic conditions and interest rate trends compared to large multinational corporations, have also benefited from a generally improving inflation and interest rate outlook, which has reduced borrowing cost pressures that disproportionately affect smaller firms.

This shift in market leadership toward small-caps is often viewed by market strategists as a healthy sign for the broader equity market, suggesting that the current rally is becoming more broadly based rather than remaining concentrated in a narrow group of mega-cap technology stocks.

Investors will be watching whether this small-cap outperformance can be sustained into the third quarter, particularly as the historical 35-year benchmark sets a high bar for continued relative strength against large-cap peers in the months ahead.