IWM US
iShares Russell 2000 ETF Guide (IWM) and Details
Last updated: 2026-08-22
The IWM ETF, officially the iShares Russell 2000 ETF, gives investors exposure to U.S. small-cap equities via the Russell 2000 Index. For Australian investors, the key question is not just what the fund holds, but how best to access that exposure: directly through the U.S. listing, or via an Australian-listed alternative such as RSSL or IJR.
What it does: Broad exposure to U.S. small-cap stocks through the Russell 2000 Index.
Who it may suit: Australians who want a dedicated U.S. small-cap allocation as a satellite position.
Main local issue for Australians: IWM is U.S.-listed and unhedged, so local investors should compare it against Australian-domiciled alternatives first.
Best Australian-listed alternative: Global X Russell 2000 ETF (RSSL) for the closest local Russell 2000 exposure.
ETF at a glance – IWM Chart
IWM seeks to track the Russell 2000 Index, which represents the small-cap portion of the broader Russell 3000 universe. In practical terms, that means the ETF targets the smaller end of the investable U.S. equity market rather than the biggest household-name companies.
The index is rules-based and widely used as a benchmark for U.S. small caps. That makes IWM a very common choice when investors want a direct small-cap allocation without active stock picking.
Currency setup: IWM is a U.S.-listed ETF with unhedged USD exposure.
That means Australian investors are taking two risks at once: the performance of U.S. small caps and the movement of the AUD/USD exchange rate. If the Australian dollar rises strongly against the U.S. dollar, it can reduce returns when measured in Australian dollars, even if the ETF performs well in USD terms.
Top Australian Brokers
- Pepperstone - Top Australian broker - Read our review
- eToro - Invest in ASX and international shares - Read our review
Can Australians buy this ETF?
Short answer: Yes, but for most Australian retail investors, the more practical first comparison is against ASX-listed alternatives rather than defaulting straight to the U.S. line.
Australian investors should check four things before buying IWM:
- Where it is listed: NYSE Arca in the U.S.
- Fund domicile: United States
- Whether there is an ASX equivalent: Yes — RSSL is the closest local Russell 2000 match, while IJR is a broader Australian-domiciled U.S. small-cap alternative.
- Whether the exposure is hedged or unhedged to AUD: IWM is unhedged.
If you buy IWM directly, you are taking on U.S. small-cap equity risk plus AUD/USD currency risk. You may also face different tax paperwork and offshore administration compared with an Australian-domiciled ETF.
If you want the closest local equivalent, RSSL is the most obvious match because it tracks the Russell 2000 in an Australian-domiciled structure. If you are comfortable with a slightly different benchmark, IJR is another established local option for U.S. small caps.
What does the ETF actually do?
IWM gives investors broad exposure to U.S. small-cap stocks. That matters because small caps often behave differently from large-cap U.S. equities: they are usually more domestically focused, more cyclical, and more sensitive to financing conditions and economic growth.
For Australians, that makes IWM a useful tool when the goal is not just “more U.S.”, but specifically more exposure to smaller U.S. companies that sit outside the mega-cap dominance of the S&P 500 and Nasdaq 100.
What it is not: IWM is not a broad all-U.S. ETF, not a hedged product, and not a defensive holding. It is a targeted U.S. small-cap equity allocation.
Overview
iShares Russell 2000 ETF gives investors access to the smaller end of the US equity market through a broad, index-tracking structure. For Australian investors, it can serve as a straightforward way to view US small-cap opportunities in one line item, but the trade-off is the usual small-cap mix of higher volatility, a wide dispersion of business quality and a portfolio that can look very different from large-cap US benchmarks.
Category
IWM is built around US small-cap equities and sits in the Small Blend category. Its underlying exposure spans a very large number of companies, with 1,956 holdings and a notably low top-10 concentration of 3.225%. That breadth points to a diversified implementation style rather than a concentrated bet on a handful of names. The portfolio also shows almost entirely domestic US exposure, with 97.369% in US stocks and 2.351% in non-US stocks, while cash is minimal at 0.280%.
Small-cap shares often move differently from the market’s largest companies, and that can be helpful when investors want exposure beyond the usual mega-cap names. IWM’s recent numbers show that this area has had a strong run, with returns of 22.47% year to date and 33.07% over 1 year. Longer timeframes are more subdued, with 18.99% over 3 years, 8.3% over 5 years and 10.72% over 10 years. That pattern suggests the fund has participated in the recent revival of smaller US companies, while also reminding investors that small caps can be cyclical and uneven over full market cycles.
Key facts
| Ticker | IWM |
|---|---|
| Exchange | US |
| ISIN | US4642876555 |
| Category / focus | Small Blend |
| Provider | iShares |
| Domicile | United States |
| Currency | USD |
| Inception date | 2000-05-22 |
| Use of income | NA |
| UCITS | No |
| Holdings count | 1956 |
Costs
| TER | 0.19% |
|---|---|
| Ongoing charge | 0.00% |
| Net expense ratio | 0.19% |
| AUM | 82.0B |
The fund’s ongoing charge is 0%, and its total expense ratio is 0.19%. Dividend yield is 0.91%. For investors comparing options, that places IWM in the low-cost end of the market for US small-cap exposure, though lower cost does not remove the risks that come with the underlying segment.
Performance
| YTD | 22.5% |
|---|---|
| 1 year | 33.1% |
| 3 years | 19.0% |
| 5 years | 8.3% |
| 10 years | 10.7% |
| Dividend yield | 0.91% |
| Top 10 concentration | 3.2% |
Holdings
| Holding | Ticker | Sector | Country | Weight |
|---|---|---|---|---|
| MOGA | MOGA | United States | 0.39% | |
| UMB Financial Corporation | UMBF | Financial Services | United States | 0.35% |
| Glaukos Corp | GKOS | Healthcare | United States | 0.33% |
| Brinker International Inc | EAT | Consumer Cyclical | United States | 0.32% |
| Cytokinetics Inc | CYTK | Healthcare | United States | 0.31% |
| Jfrog Ltd | FROG | Technology | United States | 0.31% |
| BrightSpring Health Services, Inc. Common Stock | BTSG | Healthcare | United States | 0.30% |
| Protagonist Therapeutics Inc | PTGX | Healthcare | United States | 0.30% |
| ViaSat Inc | VSAT | Technology | United States | 0.30% |
| Old National Bancorp | ONB | Financial Services | United States | 0.30% |
The portfolio is highly diversified across 1,956 holdings, with no single position large enough to dominate returns. The top holdings display a balanced mix of sectors: financials, healthcare, technology, consumer cyclicals and other cyclical names all feature prominently. The top 10 holdings are MOGA, UMB Financial Corporation, Glaukos Corp, Brinker International Inc, Cytokinetics Inc, Jfrog Ltd, BrightSpring Health Services, Protagonist Therapeutics, ViaSat and Old National Bancorp. Sector weights are also broad, led by Healthcare at 20.465%, Financial Services at 17.906%, Industrials at 13.760% and Technology at 14.328%.
Regions
| Name | Weight |
|---|---|
| North America | 97.9% |
| Latin America | 0.9% |
| Europe Developed | 0.4% |
| Asia Developed | 0.2% |
| Africa/Middle East | 0.2% |
| Asia Emerging | 0.1% |
| United Kingdom | 0.1% |
| Australasia | 0.0% |
| Japan | 0.0% |
| Europe Emerging | 0.0% |
Sectors
| Name | Weight |
|---|---|
| Healthcare | 20.5% |
| Financial Services | 17.9% |
| Technology | 14.3% |
| Industrials | 13.8% |
| Consumer Cyclicals | 9.0% |
| Real Estate | 6.5% |
| Energy | 6.3% |
| Basic Materials | 4.4% |
| Utilities | 2.7% |
| Consumer Defensive | 2.6% |
Related ETFs
Compared with many broad US equity ETFs, this fund leans further into the smaller-company segment and therefore brings a different mix of risk and return drivers. Its expense ratio of 0.19% is relatively lean for thematic or segment-specific US equity access, but investors should think more about the market exposure than the fee alone. The portfolio’s top 10 concentration is only 5.611%, which points to broad spread across many holdings rather than reliance on a handful of names.
For most Australians, the choice comes down to this: RSSL if you want the Russell 2000 specifically in a local wrapper, IJR if you are comfortable with S&P 600 exposure and want a lower-cost Australian-domiciled option, or IWM if you specifically want the original U.S. line and are comfortable with offshore administration.
- Vanguard Small-Cap ETF (VB)A broad US small-cap alternative with a similar market-cap style focus.
- SPDR Portfolio S&P 600 Small Cap ETF (SPSM)Another low-cost route to US small caps, useful for comparison on index choice and implementation.
- iShares Core S&P Small-Cap ETF (IJR)A closely watched small-cap peer for investors comparing Russell- and S&P-based exposures.
These funds are comparison context only and are not recommendations.
Risks
Who it may suit
This fund may suit Australian investors who want broad, liquid exposure to US small-cap shares and prefer a single ETF rather than selecting individual smaller companies. It may also appeal to those building a satellite allocation around US equities and who understand that small-cap portfolios can be more sensitive to earnings swings, funding conditions and shifts in investor appetite than large-cap funds.
Key risks
The main risk is the asset class itself: small-cap equities can be more volatile and more vulnerable to economic slowdowns than larger companies. The portfolio’s diversification helps, but it does not remove market risk, and the absence of a meaningful dividend stream means returns are likely to be driven primarily by price movements rather than income. The fund also holds many companies with modest individual weights, so stock-specific surprises can still affect performance, even if no single holding dominates.
FAQ
Is IWM focused on income or growth?
It is primarily an equity growth-and-price-return vehicle rather than an income fund. The dividend yield is 0.91%, which is relatively modest.
How concentrated is the portfolio?
It is not very concentrated. The top 10 holdings account for 3.225% of assets, so the fund is spread across many small positions.
What type of companies does it hold?
It holds US small-cap companies across a wide range of sectors, with healthcare, financial services, industrials and technology among the largest exposures.
Is this a defensive ETF?
No. Small-cap equities can be more sensitive to economic conditions and market sentiment than larger companies, so the fund is better understood as a higher-risk equity allocation.
*This content is aimed to provide general information only, and does not take your personal objectives, financial situation or needs into account.
