Best Small-Cap ETFs for 2026
Small-cap ETFs invest in smaller companies that typically have market capitalizations between $300 million and $2 billion. These firms are often earlier in their growth trajectories, offering the potential for higher returns than large-cap stocks — but with correspondingly higher volatility and risk. Small caps have historically outperformed large caps over very long periods, though this premium can be inconsistent and may require patience through extended periods of underperformance.
IWM, the iShares Russell 2000 ETF, is the most popular small-cap fund and tracks the Russell 2000 Index, which contains the 2,000 smallest stocks in the Russell 3000. VB from Vanguard tracks the CRSP US Small Cap Index and offers broader coverage with over 1,400 holdings at Vanguard's characteristically low expense ratio. IJR from iShares tracks the S&P SmallCap 600 Index, which applies a profitability screen that excludes unprofitable companies — a quality filter that has helped IJR outperform the Russell 2000 over time.
Small-cap stocks tend to be more sensitive to the domestic economy, interest rates, and credit conditions than large caps. They typically outperform during economic recoveries and early-cycle expansions when growth accelerates, but underperform during recessions and when financial conditions tighten. Understanding these cyclical dynamics can help investors time their small-cap allocation more effectively and set appropriate expectations for different market environments.
How We Rank
ETFs are ranked by assets under management (AUM). Only ETFs with $50M+ in assets are included. Data is updated daily.
| # | Symbol | Fund Name | AUM |
|---|---|---|---|
| 1 | VTI | Vanguard Total Stock Market ETF | $2.10T |
| 2 | VEA | Vanguard FTSE Developed Markets ETF | $287.00B |
| 3 | IEFA | iShares Core MSCI EAFE ETF | $172.91B |
| 4 | VB | Vanguard Small-Cap ETF | $169.10B |
| 5 | IEMG | iShares Core MSCI Emerging Markets ETF | $136.63B |
| 6 | IJR | iShares Core S&P Small-Cap ETF | $90.48B |
| 7 | IWM | iShares Russell 2000 ETF | $69.44B |
| 8 | VBR | Vanguard Small-Cap Value ETF | $62.30B |
| 9 | IXUS | iShares Core MSCI Total International Stock ETF | $53.84B |
| 10 | VBK | Vanguard Small-Cap Growth ETF | $40.00B |
| 11 | IDEV | iShares Core MSCI International Developed Markets ETF | $28.14B |
| 12 | AVUV | Avantis U.S. Small Cap Value ETF | $22.57B |
| 13 | SCHA | Schwab U.S. Small-Cap ETF | $19.55B |
| 14 | AVDV | Avantis International Small Cap Value ETF | $17.33B |
| 15 | VTWO | Vanguard Russell 2000 ETF | $14.50B |
| 16 | SPSM | State Street SPDR Portfolio S&P 600 Small Cap ETF | $14.12B |
| 17 | SCZ | iShares MSCI EAFE Small-Cap ETF | $13.36B |
| 18 | VSS | Vanguard FTSE All-World ex-US Small-Cap ETF | $13.20B |
| 19 | DFAS | Dimensional - US Small Cap ETF | $12.65B |
| 20 | IWO | iShares Russell 2000 Growth ETF | $12.36B |
| 21 | IWN | iShares Russell 2000 Value ETF | $12.21B |
| 22 | ESGV | Vanguard ESG U.S. Stock ETF | $11.90B |
| 23 | GDXJ | VanEck Junior Gold Miners ETF | $10.28B |
| 24 | IEUR | iShares Core MSCI Europe ETF | $8.61B |
| 25 | JGRO | JPMorgan Active Growth ETF | $8.34B |
What to Look For
Index methodology matters significantly for small-cap ETFs. The Russell 2000 includes all small-cap stocks regardless of profitability, while the S&P SmallCap 600 requires positive earnings, creating a higher-quality portfolio. Compare the number of holdings, sector weights, and quality characteristics across funds.
Expense ratios range from 0.05% to 0.20% for major small-cap ETFs. Liquidity is important here — IWM has far higher volume and a deeper options market than VB or IJR. For long-term holders, the expense ratio matters most, but for traders and options users, IWM's liquidity advantage is substantial.
Which Small-Cap ETFs Is Best for You?
IJR is our top pick for long-term small-cap exposure. The S&P SmallCap 600 Index's profitability requirement filters out money-losing speculative companies that drag on returns. This quality screen has given IJR a meaningful performance edge over the Russell 2000 historically, making it the smartest choice for buy-and-hold investors who want small-cap exposure.
VB provides the broadest small-cap diversification at Vanguard's ultra-low expense ratio of about 0.05%. Its index includes a wider range of companies than IJR, giving exposure to the full small-cap universe. VB is an excellent core small-cap holding for investors who want comprehensive coverage and minimal costs.
IWM is the small-cap ETF of choice for active traders and institutional investors. Its massive daily volume and deep options market make it the default instrument for expressing views on the small-cap space. The Russell 2000 index it tracks is the most widely quoted small-cap benchmark, making IWM essential for hedging, tactical allocation, and options strategies.