IWC vs IWM: holdings overlap, shared companies and scores
As of September 11, 2026, IWC and IWM overlap 13.3% by weight. iShares Micro-Cap ETF (IWC): Russell Microcap index. iShares Russell 2000 ETF (IWM): Russell 2000 index.
Updated September 11, 2026
How much do IWC and IWM overlap?
As of September 11, 2026, IWC and IWM overlap 13.3% by weight.
94% of IWC is already inside IWM.
14% of IWM is already inside IWC.
IWC holds 1,346 companies and IWM holds 1,951; 908 are in both.
Computed by ETF Copilot from both funds' holdings rather than quoted from a data provider, and rebuilt nightly.
How does ETF Copilot score IWC and IWM?
As of September 11, 2026, ETF Copilot scores IWC 4.0 out of 10 and IWM 4.2 out of 10.
They differ most on Growth: IWC 3.6 and IWM 5.1.
The five factor scores behind them are set out below, 0–10 and higher is better, ranked against every US equity ETF we track.
| Factor | IWC | IWM |
|---|---|---|
| Growth | 3.6 | 5.1 |
| Valuation | 8.2 | 8.2 |
| Risk | 1.6 | 2.4 |
| Quality | 0.8 | 0.7 |
| Return | 5.5 | 4.3 |
IWM is the cheaper of the two at 0.19% a year
As of September 11, 2026, IWC charges 0.60% a year, yields 1.32% and holds $1.5B in assets across 1346 positions.
As of September 11, 2026, IWM charges 0.19% a year, yields 1.34% and holds $80.5B in assets across 1951 positions.
| Measure | IWC | IWM |
|---|---|---|
| Expense ratio | 0.60% | 0.19% |
| Dividend yield | 1.32% | 1.34% |
| Assets under management | $1.5B | $80.5B |
| Holdings | 1346 | 1951 |
Expense ratio, dividend yield and assets under management are reported by the fund and refreshed daily. Every other figure on this page is computed by ETF Copilot.
Where IWC and IWM trade against their own history
IWC trades at 13.2 times earnings, against its own median of 13.6, and is cheaper than 57% of its own 114 monthly readings since 2017.
IWM trades at 16.8 times earnings, against its own median of 16.7, and is more expensive than 56% of its own 114 monthly readings since 2017.
What moved IWC and IWM this week
IWC fell 2.1% in the week to September 11, 2026. The holdings that moved it most were Sellas Life Sciences (−15.7%), Xeris Biopharma (−13.3%) and Nuvation BIO (−10.3%); Bandwidth (+20.8%) pushed the other way.
IWM fell 2.1% in the week to September 11, 2026. The holdings that moved it most were Servicetitan (−41.3%), Qualys (−13.8%) and Dyne Therapeutics (−27.0%); Maxlinear (+25.4%) pushed the other way.
What do IWC and IWM each hold?
What's inside IWC: Tech 12%, Semiconductors 1%.
5% of IWC is its ten largest holdings.
What's inside IWM: Tech 14%, Semiconductors 2%.
3% of IWM is its ten largest holdings.
Compare with similar funds
Cite this
ETF Copilot, “IWC vs IWM holdings overlap and scores”, as of September 11, 2026.
https://etf-copilot.com/compare/iwc-vs-iwm
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