Investors looking to add small-cap exposure—outside the concentration of mega-cap stocks—can choose from a number of low-cost exchange-traded funds. Two widely used options, the Vanguard Small-Cap ETF and the iShares Morningstar Small-Cap ETF, both track broad baskets of smaller U.S. companies while differing in portfolio breadth, fee structure, and scale.
Vanguard’s fund emphasizes low costs and liquidity, while iShares’ approach pairs a slightly higher fee with heavier diversification across more holdings. For investors comparing the two, the decision often comes down to trade-offs between total return, distribution yield, and fund structure.
Key takeaways
- One-year performance: iShares Morningstar Small-Cap ETF delivered a higher 1-year total return than Vanguard Small-Cap ETF, with iShares at 31.60% versus Vanguard at 29.90% (as of June 17, 2026).
- Costs and yield: Vanguard’s expense ratio is 0.03% compared with 0.04% for iShares, while dividend yields are 1.20% and 1.30%, respectively.
- Portfolio construction: iShares holds 1,544 stocks versus Vanguard’s 1,357, affecting how concentrated or diversified each fund can be at the individual-company level.
- Risk profile: Both funds show similar beta to the S&P 500, with Vanguard at 1.04 and iShares at 1.05.
- Implication for investors: Differences in fee drag, distribution, and holdings count can matter over time—especially in small-cap strategies where price swings are typically larger.
Cost, yield and the diversification trade-off
Both ETFs are built for broad small-cap exposure at low expense levels. Vanguard Small-Cap ETF carries a 0.03% expense ratio, while iShares Morningstar Small-Cap ETF charges 0.04%. According to the fund metrics provided, the trailing-12-month distribution yield is 1.20% for Vanguard and 1.30% for iShares.
On the diversification front, iShares currently holds 1,544 stocks, while Vanguard holds 1,357 securities. More holdings can help limit the impact of any single company’s performance, but it can also dilute exposure to the strongest performers within the small-cap universe.
Performance and downside behavior
In trailing returns, iShares shows the edge over the past year. The iShares fund’s 1-year total return is 31.60% compared with 29.90% for Vanguard (as of June 17, 2026), based on the data cited.
Downside risk metrics are also close, reflecting the sensitivity of small-cap stocks to economic and credit conditions. According to the same summary metrics, max drawdown over five years is (29.90%) for iShares and (28.20%) for Vanguard. A hypothetical comparison of growth of $1,000 over five years shows iShares at $1,368 versus Vanguard at $1,446, using the figures provided.
While these measures are not identical, they suggest both products have experienced significant volatility consistent with the small-cap factor, with Vanguard showing slightly better performance over the five-year window in the cited comparison.
What’s inside: index approach, sector tilts and top positions
iShares Morningstar Small-Cap ETF is designed to mirror market performance of smaller U.S. companies and is currently allocated across sectors including industrials (18%), financial services (16%) and technology (15%), according to the provided breakdown. The fund’s largest holdings include Lumentum Holdings at 0.99%, Revolution Medicines at 0.46%, and Ati at 0.42%. The article also notes the fund was launched in 2004 and paid $0.95 per share over the trailing 12 months.
Vanguard Small-Cap ETF holds a somewhat different mix, with a higher share in industrials (21%) and technology (17%), while financial services accounts for 13% of the portfolio, based on the cited figures. Its top holdings currently include Flex Ltd at 0.69%, Astera Labs at 0.62%, and Ciena Corp at 0.51%. The Vanguard fund also launched in 2004 and is reported to have a trailing-12-month dividend of $3.50 per share.
Market implications: how to choose between them
The two funds appear to target the same core objective—small-cap diversification at low cost—but the differences can matter depending on what investors prioritize.
- Income and recent momentum: iShares offers a slightly higher trailing distribution yield (1.30%) and a higher 1-year total return (31.60% versus 29.90%), which may appeal to investors balancing income with recent performance.
- Fee drag over time: Vanguard’s 0.03% expense ratio versus iShares’ 0.04% can reduce cumulative costs over long holding periods. Even small differences in fees can compound, particularly in broad-market ETFs held for years.
- Liquidity considerations: The cited assets under management figure shows Vanguard at $182.7 billion compared with iShares at $286.2 million. Larger AUM can support tighter trading spreads and easier execution for investors transacting in the fund.
- Risk is broadly similar: With beta near the S&P 500—1.04 for Vanguard and 1.05 for iShares—the market exposure profiles are close, implying that differences in behavior are more likely driven by index composition and holdings rather than dramatically different market sensitivity.
According to the article’s discussion, the Vanguard fund also benefited from a change in April that lowered its expense ratio, adding to its cost advantage in the current comparison.
What to watch next
For small-cap ETF investors, the next catalysts are typically macro-driven. Watch upcoming U.S. economic data and Federal Reserve commentary for signals on growth and interest-rate expectations, as smaller companies are often more sensitive to tightening and credit conditions. Investors should also monitor fund updates around expense and index methodology, alongside ongoing distribution declarations that can influence after-tax income planning.
