IWR vs SPMD: Differences, Returns & Fees
IWR and SPMD hold 22% of their weight in the same names, and IWR returned +15.1% over the year. Net assets on Oct 20, 2026: $57.0bn for iShares Russell Mid-Cap ETF and $18.4bn for State Street SPDR Portfolio S&P 400 Mid Cap ETF.
SPMD costs 0.15 points a year less; their one-year returns differ by 1.6 points; IWR is 3.1 times larger.
| IWR | SPMD | |
|---|---|---|
| Expense ratio | 0.18% | 0.03% |
| Net assets | $57.0bn | $18.4bn |
| Total return, 1 year | +15.1% | +13.5% |
| What it tracks | Russell Midcap Index | S&P MidCap 400 Index |
| Holdings in common | 22% | |
| Top ten holdings, share of the fund | 6.8% | 7.1% |
| Below its high | 4.3%, high on Aug 14, 2026 | 6.8%, high on Aug 14, 2026 |
Holdings in common uses holdings dated Oct 19, 2026.
IWR and SPMD are built for the same job. How do they differ in cost, holdings and results?
- What each follows. IWR follows Russell Midcap Index and SPMD follows S&P MidCap 400 Index.
- Holdings in common. 22% of the weight is in the same securities (holdings dated Oct 19, 2026).
- Cost. IWR charges 0.18% of assets a year and SPMD 0.03%, a gap of 0.15 points.
Data as of Oct 20, 2026. The differences are picked by a fixed rule, in a fixed order; the PDF prints it. Page 2 has the returns, overlap, risks and sources.
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What they hold in common
By the books each fund has filed, IWR and SPMD hold 22% of their money in the same securities at the same weight. Holdings dated Oct 19, 2026.
half
22% in common
On the same fields
IWR and SPMD on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.
About IWR
IWR tracks an index. The prospectus expense ratio is 0.18% a year. By its holdings published by its issuer for Oct 19, 2026, 62% of the fund by weight is stocks the S&P 500 also holds, across 825 positions, with the top ten at 6.8%. It sat 4.3% below its high of Aug 14, 2026 on Oct 20, 2026.
Over the year to Oct 20, 2026 it returned +15.1% with distributions reinvested, against +15.0% for its benchmark, the Russell 3000 Index.
About SPMD
SPMD tracks an index. Over the year to Oct 20, 2026 it returned +13.5% with distributions reinvested, against +13.4% for its benchmark, the S&P MidCap 400 Index. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 19, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 401 positions, with the top ten at 7.1%. It sat 6.8% below its high of Aug 14, 2026 on Oct 20, 2026.
Questions people ask
- Which returned more over the last year, IWR or SPMD?
- In the year to Oct 20, 2026, with distributions reinvested, IWR returned +15.1% and SPMD +13.5%.
- Which is cheaper, IWR or SPMD?
- SPMD is cheaper, by 0.15 percentage points a year. That is about $15 on $10,000 held for a year. Fees come from each fund's prospectus.
ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
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ETFIQ, IWR against SPMD, data as of Oct 20, 2026. https://etfiq.com/compare/any/iwr-vs-spmd
ETFIQ. (Oct 20, 2026). IWR against SPMD. Retrieved from https://etfiq.com/compare/any/iwr-vs-spmd
[IWR against SPMD (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/iwr-vs-spmd)
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