Small caps have lagged big companies for five years. VSO, the largest Australian small-cap ETF, returned 4.8% a year over five years to 30 September 2026, against 6.5% for VAS. Overseas the gap was wider: US small caps in IJR made 5.9% a year while the S&P 500 made 13.4%. Index small-cap ETFs cost 0.07% to 0.55% a year, and they suit investors who want a modest satellite slice, not a core holding.
What counts as a small cap?
A "small cap" is a company with a small market capitalisation, which is the total value of all its shares. On the ASX that usually means companies ranked roughly 101 to 300 by size: household names like Metcash, AMP and Bank of Queensland, plus many miners, builders and tech firms you may not have heard of.
The appeal is simple. Small companies have more room to grow, and some of today's small caps become tomorrow's top-50 stocks. The trade-off is that they are more volatile, less profitable on average, and more likely to fail. In Australia the small-cap index is also heavy in gold and lithium miners, which makes it swing hard with commodity prices.
Australian small-cap ETFs, side by side
There are five index funds and two active funds focused on Australian small companies. Two of the index funds, ISO and SSO, track exactly the same index, the S&P/ASX Small Ordinaries.
| ETF | Approach | Fee | Size | 1 year | 3 years (a year) | 5 years (a year) |
|---|---|---|---|---|---|---|
| VSO Vanguard | MSCI small cap index, about 190 stocks | 0.30% | $1,195m | -0.1% | 11.5% | 4.8% |
| SMLL Betashares | Small caps screened for profit, about 60 stocks | 0.39% | $369m | +4.3% | 13.6% | 4.7% |
| MVS VanEck | Rules-based, about 60 stocks | 0.49% | $186m | -2.1% | 9.8% | 2.3% |
| SSO State Street | Small Ordinaries index, 200 stocks | 0.50% | $27m | -6.9% | 9.4% | 0.9% |
| ISO iShares | Small Ordinaries index, 200 stocks | 0.55% | $136m | -6.9% | 9.2% | 0.9% |
| FSML Firetrail | Active, stock picker | 0.85% | $638m | -1.4% | n/a | n/a |
| SPHX Spheria | Active, listed April 2026 | 1.10% | $2m | n/a | n/a | n/a |
Total returns including distributions to 30 September 2026. Fund size at 30 September 2026. Source: TMX Australia monthly funds report and issuer holdings.
Fees and five-year returns
The clearest pattern is that the cheapest, broadest funds have done best over five years, and the plain Small Ordinaries trackers have done worst. Over five years ISO and SSO returned less than 1% a year. The Small Ordinaries index is packed with speculative miners and loss-making companies, and that group has had a rough run.
- VSO is the cheapest and largest. Its MSCI index reaches up into slightly bigger companies, such as BlueScope Steel, Orica and Cochlear, which may have helped.
- SMLL only holds small companies that pass profitability and balance sheet tests. That quality filter is why it led over three years and over the past year.
- MVS holds about 60 companies at fairly even weights, so no single stock dominates.
- ISO and SSO are the purest market exposure, and also the most expensive index options.
Compare the leading pairs in detail: VSO vs SMLL, SMLL vs MVS and VSO vs FSML.
Small vs large: who has won lately?
The textbook says small companies earn more than big ones over the long run, as a reward for extra risk. The past five years have not followed the textbook.
Small caps vs large caps: who won, and by how much
Over five years, Australian small caps trailed VAS by 1.7% a year, and the gap against VLC, which holds only the 15 or so largest ASX companies, was more than 3% a year. In the US, the gap was huge: IVV beat IJR by 7.5% a year, largely because a handful of giant technology companies drove the S&P 500.
Why the lag? A few reasons are commonly cited:
- Higher interest rates. Smaller companies tend to borrow more and at higher rates, so rising rates hurt them more.
- The mega-cap boom. Money poured into the largest technology and bank stocks, leaving smaller companies behind.
- Fewer profitable companies. A larger share of small caps lose money, and investors have paid up for reliable profits.
Over the past year the gap narrowed overseas, with IJR and VISM slightly ahead of their large-cap equivalents. One year is not a trend, and nobody can say whether small caps will lead from here. What history does show is that leadership between small and large companies tends to rotate over long periods.
What $10,000 grew to over five years
Global small-cap ETFs
If you want small companies from outside Australia, the choice is wider, and the funds are larger.
| ETF | What it holds | Fee | Size | 1 year | 3 years (a year) | 5 years (a year) |
|---|---|---|---|---|---|---|
| QSML VanEck | Developed-world small caps with a quality filter | 0.59% | $1,573m | -1.4% | 10.4% | 7.1% |
| QHSM VanEck | QSML, hedged to the Australian dollar | 0.62% | $262m | +4.2% | n/a | n/a |
| VISM Vanguard | Developed-world small caps, thousands of stocks | 0.32% | $952m | +10.4% | 14.5% | 6.6% |
| IJR iShares | S&P 600 US small caps | 0.07% | $827m | +10.6% | 11.5% | 5.9% |
| DGSM Dimensional | Active, rules-based global small caps | 0.65% | $701m | +9.8% | n/a | n/a |
| GSCF Ausbil | Active, global small caps | 1.20% | $115m | n/a | n/a | n/a |
| AVSV Avantis | Active, global small-cap value | 0.45% | $92m | n/a | n/a | n/a |
| SVNP Savana | Active, US small caps | 1.00% | $7m | +12.7% | 13.4% | n/a |
| MQXS Macquarie | Active, global small caps | 0.45% | $2m | n/a | n/a | n/a |
| ISMD Global X | International small and mid caps | 0.45% | $4m | n/a | n/a | n/a |
Total returns including distributions to 30 September 2026. n/a means the fund is too new. Source: TMX Australia monthly funds report.
Global small caps vs global shares
QSML is the largest small-cap ETF on the ASX and the best five-year performer of the global group. Its quality filter favours companies with high returns on equity, steady earnings and low debt, which leaves it heavy in industrials (about 34%) and financials (about 22%). The filter has not helped over the past year: QSML returned -1.4% against +10.4% for VISM. VISM is the broad, cheaper alternative, and the two share less than you might expect: QSML holds about 145 companies against VISM's thousands. IJR is the cheapest small-cap ETF on the ASX at 0.07%, but it is US only. See QSML vs VISM, IVV vs IJR and QSML vs QHSM.
Fees matter more in small caps
Small-cap fees vary widely, from 0.07% to 1.20% a year. Over a long holding period that difference becomes large.
What fees cost on $100,000 over 20 years
Active managers argue that small caps are where stock picking works best, because fewer analysts cover these companies. That can be true, but the manager has to beat the index by more than the fee every year just to keep up. FSML has attracted $638 million since listing in late 2024, though it trailed VSO over its first full year. See all active ETFs.
How much do the Australian funds overlap?
Because each fund defines "small" differently, they hold surprisingly different portfolios.
| Pair | Overlap | What it means |
|---|---|---|
| VSO and ISO | 40% | Similar territory, different index rules |
| SMLL and MVS | 31% | Both screened, different companies |
| VAS and VSO | 21% | VAS already owns a slice of small caps |
| VSO and SMLL | 17% | Quite different funds |
Overlap counts the smaller weight of every company held by both funds. Issuer holdings at 30 September to 30 October 2026.
Small caps lean harder on miners and industrials
The key point for VAS holders: VAS covers the ASX 300, so about a fifth of VSO is already inside it. Adding a small-cap fund on top lifts your small-company share, but it does not give you something entirely new. A small-cap fund also cuts your exposure to the big four banks, which make up a large part of the main index.
Check how your funds overlap in our overlap calculator →
Where small caps might fit in a portfolio
- As a satellite, not the core. A common approach is a modest slice, say 5 to 15% of a share portfolio, next to a broad core fund. Our guide to building a satellite portfolio explains the idea.
- For a long time horizon. Small caps can spend years behind large caps, as the past five years show. They suit investors who can sit through that without selling.
- With care near retirement. If you are drawing an income from your portfolio, the bigger swings of small caps can mean selling at a bad time. A smaller allocation, or none, may suit.
- Australia or global? Australian small caps are concentrated in miners. Global small-cap funds spread across thousands of companies and many industries, but add currency risk.
Browse every fund in our ETF directory or line up your shortlist with the compare tool.
Common questions
What is the best small-cap ETF in Australia?
There is no single best. VSO is the largest and cheapest Australian index option at 0.30% a year, SMLL has the best three-year record thanks to its profit screen, and QSML is the largest global small-cap fund. Which suits depends on whether you want Australian or global exposure and whether you want a quality filter.
Why have small-cap ETFs underperformed?
Over the five years to 30 September 2026, large companies, especially giant technology and bank stocks, led markets. Higher interest rates also weighed on smaller companies, which tend to carry more debt. Small caps have led in other periods, and leadership tends to rotate.
Do I need a small-cap ETF if I own VAS?
Not necessarily. VAS tracks the ASX 300, so it already holds about 100 smaller companies, and about 21% of VSO overlaps with VAS. A separate small-cap fund simply raises your weighting to smaller companies.
Is ISO the same as SSO?
Yes, in what they hold. Both track the S&P/ASX Small Ordinaries index and returned almost exactly the same over five years. SSO charges 0.50% a year and ISO 0.55%, but ISO is the larger fund.
Joshua Stega is a financial adviser with 20 years' experience and the founder of ETF Adviser. He built ReviewETF to make every Australian ETF easy to find and compare.
General information only. It does not take into account your objectives, financial situation or needs. Consider the PDS and TMD before investing. Past performance is not a reliable indicator of future performance. Data as at 30 September 2026.