IWR vs SPTM: Differences, Returns & Fees
IWR and SPTM hold 17% of their weight in the same names, and SPTM returned +15.7% over the year. Net assets on Oct 20, 2026: $57.0bn for iShares Russell Mid-Cap ETF and $14.1bn for State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF.
SPTM costs 0.15 points a year less; their one-year returns differ by 0.6 points; IWR is 4.0 times larger.
| IWR | SPTM | |
|---|---|---|
| Expense ratio | 0.18% | 0.03% |
| Net assets | $57.0bn | $14.1bn |
| Total return, 1 year | +15.1% | +15.7% |
| What it tracks | Russell Midcap Index | S&P Composite 1500 Index |
| Holdings in common | 17% | |
| Top ten holdings, share of the fund | 6.8% | 35.8% |
| Below its high | 4.3%, high on Aug 14, 2026 | |
Holdings in common uses holdings dated Oct 19, 2026.
IWR and SPTM are built for the same job. How do they differ in cost, holdings and results?
- What each follows. IWR follows Russell Midcap Index and SPTM follows S&P Composite 1500 Index.
- Holdings in common. 17% of the weight is in the same securities (holdings dated Oct 19, 2026).
- Cost. IWR charges 0.18% of assets a year and SPTM 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 SPTM hold 17% of their money in the same securities at the same weight. Holdings dated Oct 19, 2026.
half
17% in common
On the same fields
IWR and SPTM 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 SPTM
SPTM tracks an index. Over the year to Oct 20, 2026 it returned +15.7% with distributions reinvested, against +15.8% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 19, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 1,512 positions, with the top ten at 35.8%.
Questions people ask
- Which returned more over the last year, IWR or SPTM?
- In the year to Oct 20, 2026, with distributions reinvested, IWR returned +15.1% and SPTM +15.7%.
- Which is cheaper, IWR or SPTM?
- SPTM 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.
Cite this pageCitation, APA and Markdown
ETFIQ, IWR against SPTM, data as of Oct 20, 2026. https://etfiq.com/compare/any/iwr-vs-sptm
ETFIQ. (Oct 20, 2026). IWR against SPTM. Retrieved from https://etfiq.com/compare/any/iwr-vs-sptm
[IWR against SPTM (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/iwr-vs-sptm)
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