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Small-Cap U.S. Stocks Trounce S&P 500 in First Half; Seven Top Small-Cap ETFs to Watch

Small-Cap U.S. Stocks Trounce S&P 500 in First Half; Seven Top Small-Cap ETFs to Watch
Published on: Jun 30, 2026
Author: Sunlight Xiang

Small-cap equities delivered extraordinary outperformance against large-cap benchmarks through the first six months of 2026, fueled by resilient domestic growth, AI expansion and compelling valuation discounts.

As market closed on June 30, the Russell 2000 surged 21.86% year-to-date, while the S&P SmallCap 600 rallied 23% — more than doubling the S&P 500’s 9.55% gain over the same period. Per Dow Jones Market Data, the Russell 2000 logged its strongest first-half performance since 1991. Most of the rally materialized in Q2, marking the index’s best quarterly run since the COVID rebound in Q4 2020.

Solid Fundamentals Power Small-Cap Rally

Robust U.S. economic resilience has underpinned upbeat earnings projections for small-cap names. Consensus analyst estimates call for a 12% profit jump among S&P SmallCap 600 constituents in 2026, with earnings growth set to accelerate to 18% in 2027. Domestic reshoring trends further benefit small businesses focused on U.S. markets, backed by industrial relocation policies.

Ongoing buildout of artificial intelligence infrastructure serves as another major catalyst. Analysts at 22V Research highlighted that rising AI optimism lifts small-cap semiconductor, tech hardware, energy and capital goods stocks across the board.

Valuations remain far more attractive on the small-cap front. FactSet data pegs the S&P SmallCap 600’s forward P/E at 17, compared with the S&P 500’s 22 forward earnings multiple. The 22% valuation discount for small caps stands well above the 10-year average gap of 12%. 22V Research forecasts the valuation spread will narrow as mild economic cooling drags long-term bond yields lower. The firm added that a gentle growth slowdown creates a Goldilocks environment for small caps: curbing inflation risks without triggering recession fears.

Seven Small-Cap ETFs for Investors

Exchange-traded funds with low expense ratios and broad diversification offer retail investors accessible exposure to small-cap markets, spanning U.S. domestic and international developed markets. Below are seven leading options across varied styles and geographies:

  1. Vanguard Small-Cap Growth ETF (VBK): Tracking the CRSP U.S. Small Cap Growth Index, the fund holds roughly 550 firms with no single stock exceeding a 1.4% weight. It tilts toward innovative tech and healthcare sectors and carries an ultra-low expense ratio of 0.05%, making it ideal for new investors seeking long-term growth exposure.
  2. iShares Russell 2000 ETF (IWM): The flagship vehicle for pure U.S. small-cap broad market exposure, IWM mirrors the Russell 2000’s nearly 1,953 constituent firms. Boasting nearly $70 billion in assets under management and average daily trading volume of 35 million shares, it delivers exceptional liquidity for core small-cap portfolio allocations.
  3. iShares MSCI EAFE Small-Cap ETF (SCZ)：This fund provides diversification into small-cap stocks across Europe, Australia and Asia. It holds more than 2,000 names, with top 10 holdings accounting for merely 3% of total assets. With $13.7 billion AUM and a 0.4% expense ratio, SCZ returned 25.7% over the past 12 months, offering valuable overseas small-cap diversification.
  4. Avantis International Small Cap Equity ETF (AVDS)：Launched in July 2023, AVDS follows a semi-active strategy loosely tracking the MSCI World ex-U.S. Small Cap Index, allowing flexible position adjustments based on valuations. It generated a 35.5% one-year return, holding over 3,000 companies across 29 nations with Japan making up nearly one-third of the portfolio. Its roughly $243 million asset base translates to relatively weaker liquidity versus peer products.
  5. Schwab Fundamental U.S. Small Company ETF (FNDA)：Built on fundamental screening metrics including sales, cash flow and dividend strength, FNDA carries a mild value bias and steers clear of highly speculative small-cap names. It holds close to 900 stocks, with top 10 positions representing just 5% of total assets, suiting investors prioritizing steady returns and lower volatility.
  6. Vanguard S&P Small-Cap 600 Growth Index ETF (VIOG)：The fund tracks profitable small-cap firms within the S&P SmallCap 600 universe, delivering superior earnings quality relative to broad small-cap benchmarks. It holds 337 stocks with a 0.1% expense ratio, posting a 11.6% three-year return and 19.3% one-year gain. Its modest daily trading volume renders it better suited for long-term buy-and-hold strategies.
  7. iShares Morningstar Small-Cap Growth ETF (ISCG)：ISCG selects holdings using ten proprietary growth factors across 961 stocks, with no single security surpassing a 1.67% portfolio weight. Sporting a 0.06% expense ratio, it delivers solid long-term performance with a 10.9% annualized 10-year return and robust portfolio diversification.

Key Takeaway

While U.S. small caps delivered stellar first-half returns and retain valuation upside, investors must weigh risks including uneven profitability across smaller firms and heightened market volatility. Market participants can tailor their small-cap exposure by blending broad market, growth, value and international ETFs aligned with their individual risk tolerances and investment horizons.

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