IWR vs IWS: holdings overlap, shared companies and scores
As of September 11, 2026, IWR and IWS overlap 77.6% by weight. iShares Russell Mid-Cap ETF (IWR): Russell Midcap index. iShares Russell Mid-Cap Value ETF (IWS): U.S. mid-cap value stocks.
Updated September 11, 2026
How much do IWR and IWS overlap?
As of September 11, 2026, IWR and IWS overlap 77.6% by weight.
84% of IWR is already inside IWS.
100% of IWS is already inside IWR.
IWR holds 821 companies and IWS holds 716; 716 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 IWR and IWS?
As of September 11, 2026, ETF Copilot scores IWR 4.9 out of 10 and IWS 4.4 out of 10.
They differ most on Growth: IWR 5.8 and IWS 4.4.
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 | IWR | IWS |
|---|---|---|
| Growth | 5.8 | 4.4 |
| Valuation | 7.1 | 6.0 |
| Risk | 3.9 | 4.0 |
| Quality | 2.9 | 2.7 |
| Return | 4.7 | 4.8 |
IWR is the cheaper of the two at 0.18% a year
As of September 11, 2026, IWR charges 0.18% a year, yields 1.54% and holds $57.0B in assets across 821 positions.
As of September 11, 2026, IWS charges 0.23% a year, yields 1.84% and holds $15.7B in assets across 716 positions.
| Measure | IWR | IWS |
|---|---|---|
| Expense ratio | 0.18% | 0.23% |
| Dividend yield | 1.54% | 1.84% |
| Assets under management | $57.0B | $15.7B |
| Holdings | 821 | 716 |
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 IWR and IWS trade against their own history
IWR trades at 20.2 times earnings, against its own median of 19.6, and is more expensive than 54% of its own 114 monthly readings since 2017.
IWS trades at 18.6 times earnings, against its own median of 17.3, and is more expensive than 61% of its own 114 monthly readings since 2017.
What moved IWR and IWS this week
IWR fell 2.0% in the week to September 11, 2026. The holdings that moved it most were Snowflake (−7.7%), Robinhood Markets (−9.7%) and Autodesk (−10.6%); Hewlett Packa (+14.1%) pushed the other way.
IWS fell 2.3% in the week to September 11, 2026. The holdings that moved it most were Baker Hughes (−7.2%), Workday (−10.3%) and Coinbase Global (−9.1%); Hewlett Packa (+14.1%) pushed the other way.
What do IWR and IWS each hold?
What's inside IWR: Tech 18%, AI 3%.
6% of IWR is its ten largest holdings.
What's inside IWS: Tech 12%, Semiconductors 1%.
7% of IWS is its ten largest holdings.
Compare with similar funds
Cite this
ETF Copilot, “IWR vs IWS holdings overlap and scores”, as of September 11, 2026.
https://etf-copilot.com/compare/iwr-vs-iws
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