Key points (as at Q2 2026)
- Four ASX-focused small-cap ETFs dominate the category: VSO (0.3% p.a., approximately 188 holdings), SSO (0.5% p.a.), ISO (0.55% p.a.) and the screened MVS (0.49% p.a.) and SMLL (0.39% p.a.).
- International small caps are a separate decision: VISM holds approximately 3,645 companies broadly, QSML screens to approximately 150 on quality measures.
- MSCI World funds such as VGS hold large and mid caps only, so many "diversified" Australian portfolios carry no international small-cap exposure at all.
- Live overlap between VSO and MVS is approximately 0%: same pond, different fishing.
Last updated: Q2 2026. Figures are computed from ETFLens data as at Q2 2026, sourced from issuer disclosure documents and reviewed quarterly.
Small companies are where sharemarket folklore says the growth lives, and where real portfolios quietly take their biggest single-name risks. A small-cap ETF is the diversified route in: one trade, dozens to thousands of smaller companies, and no need to guess which junior miner or software hopeful survives. The ASX offers several structurally different ways to do it, and the international options answer a different question again. This guide compares them with live data.
What counts as small-cap
On the ASX, "small caps" conventionally means the S&P/ASX Small Ordinaries index: the companies in the ASX 300 that are not in the ASX 100. The MSCI Australian Shares Small Cap index draws a similar boundary with its own rules. Both exclude the banks, miners and blue chips that dominate VAS and A200, which is precisely the point: a small-cap fund is a deliberate tilt away from the concentrated top of the Australian market.
The Australian options
VSO (Vanguard) tracks the MSCI Australian Shares Small Cap index: approximately 188 companies at 0.3% p.a., approximately $30/year per $10,000, with approximately $1.1 billion under management. It is the broad, passive way in.
SSO (State Street) and ISO (iShares) both track the S&P/ASX Small Ordinaries index, each holding approximately 202 companies, at 0.5% p.a. and 0.55% p.a. respectively. Same benchmark, different issuers and fees.
MVS (VanEck) takes a screened approach: approximately 60 companies selected for liquidity and dividend characteristics at 0.49% p.a.. SMLL (Betashares) screens for profitability and liquidity, also holding approximately 60 companies, at 0.39% p.a.. Screened funds hold fewer names, so single-company outcomes matter more, in both directions.
How different are they really?
This is where live holdings data earns its keep. ETFLens shows approximately 0% overlap between VSO and MVS, and approximately 10% between VSO and SMLL. The broad index funds and the screened funds genuinely hold different portfolios, not the same list in different wrappers. It also shows approximately 4% overlap between VAS and VSO: the ASX 300's small-cap tail gives a VAS holder a taste of the asset class, but only a taste, because index weighting keeps those companies to a few percent of the fund. The overlap checker has the current figure for any pair.
Going global: the gap most portfolios have
Here is the structural point this category hides: MSCI World funds such as VGS and BGBL hold large and mid-cap companies only. A portfolio of VAS plus VGS, one of the most common Australian two-fund structures, owns no international small companies at all. Whether that gap matters is a personal judgement, but many investors do not know they have it.
VISM (Vanguard) fills it broadly: approximately 3,645 developed-market small companies at 0.32% p.a., approximately $32/year per $10,000. QSML (VanEck) filters the same universe to approximately 150 companies scoring well on return on equity, earnings stability and leverage, at 0.59% p.a.. Broad coverage against a quality screen: ETFLens shows approximately 15% overlap between them, which tells you how selective that screen is.
Recent returns, and the caution that goes with them
As at Q2 2026, 1-year total returns were approximately 17.5% for VSO, approximately 16.1% for SMLL, approximately 8.8% for MVS, approximately 21.8% for VISM and approximately 8.3% for QSML. Over 3 years: approximately 10.0% p.a. for VSO, approximately 13.7% p.a. for VISM and approximately 12.9% p.a. for QSML. Past performance is not a reliable indicator of future returns. Small caps are cyclical: the same funds posted lean figures through earlier parts of the cycle, and a strong recent year says nothing about the next one.
The risks in plain English
Small-cap funds carry the asset class with them: higher price volatility than broad-market funds, thinner liquidity in the underlying shares, more sensitivity to the economic cycle and, in screened funds, concentration in a few dozen names. Diversification inside the fund removes single-company catastrophe risk; it does not remove the possibility of the whole segment falling further than the broad market in a downturn.
Who these funds may suit
ETFLens does not recommend funds, and this is not a recommendation. As a neutral description: broad small-cap index funds may suit investors who want the asset class as a measured tilt alongside a large-cap core. Screened funds may suit investors who accept concentration in exchange for a defined selection discipline. International small-cap funds may suit investors who have noticed the MSCI World gap and want it closed. None of them typically serve as a portfolio core, and whether any suits you depends on your objectives, financial situation and needs, which ETFLens cannot assess. The live comparison page puts any two side by side.
This article is general information only and not personal financial or tax advice. ETFLens does not hold an Australian Financial Services Licence (AFSL). Franking and distribution tax depend on your individual circumstances; consider a registered tax agent. Consider your own objectives, financial situation and needs, or speak with a licensed financial adviser before making investment decisions. Past performance is not a reliable indicator of future returns.