IMCG vs SPTM: Differences, Returns & Fees
IMCG and SPTM hold 12% of their weight in the same names, and SPTM returned +15.7% over the year. Net assets on Oct 20, 2026: $4.1bn for iShares Morningstar Mid-Cap Growth ETF and $14.1bn for State Street SPDR Portfolio S&P 1500 Composite Stock Market ETF.
SPTM costs 0.03 points a year less; their one-year returns differ by 0.6 points; SPTM is 3.5 times larger.
| IMCG | SPTM | |
|---|---|---|
| Expense ratio | 0.06% | 0.03% |
| Net assets | $4.1bn | $14.1bn |
| Total return, 1 year | +15.1% | +15.7% |
| What it tracks | Morningstar US Mid Cap Broad Growth Index | S&P Composite 1500 Index |
| Holdings in common | 12% | |
| Top ten holdings, share of the fund | 12.5% | 35.8% |
| Below its high | 5.9%, high on Aug 13, 2026 | |
Holdings in common uses holdings dated Oct 19, 2026.
IMCG and SPTM are built for the same job. How do they differ in cost, holdings and results?
- What each follows. IMCG follows Morningstar US Mid Cap Broad Growth Index and SPTM follows S&P Composite 1500 Index.
- Holdings in common. 12% of the weight is in the same securities (holdings dated Oct 19, 2026).
- Number of holdings. IMCG holds 260 positions and SPTM holds 1512.
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, IMCG and SPTM hold 12% of their money in the same securities at the same weight. Holdings dated Oct 19, 2026.
half
12% in common
On the same fields
IMCG and SPTM on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.
About IMCG
IMCG tracks an index. Over the year to Oct 20, 2026 it returned +15.1% with distributions reinvested. The prospectus expense ratio is 0.06% a year. By its holdings published by its issuer for Oct 19, 2026, 80% of the fund by weight is stocks the S&P 500 also holds, across 260 positions, with the top ten at 12.5%. It sat 5.9% below its high of Aug 13, 2026 on Oct 20, 2026.
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, IMCG or SPTM?
- In the year to Oct 20, 2026, with distributions reinvested, IMCG returned +15.1% and SPTM +15.7%.
- Which is cheaper, IMCG or SPTM?
- SPTM is cheaper, by 0.03 percentage points a year. That is about $3 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, IMCG against SPTM, data as of Oct 20, 2026. https://etfiq.com/compare/any/imcg-vs-sptm
ETFIQ. (Oct 20, 2026). IMCG against SPTM. Retrieved from https://etfiq.com/compare/any/imcg-vs-sptm
[IMCG against SPTM (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/imcg-vs-sptm)
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