IMCB vs MDYG: Differences, Returns & Fees
IMCB and MDYG hold 4% of their weight in the same names, and IMCB returned +19.2% over the year. Net assets on Oct 20, 2026: $1.7bn for iShares Morningstar Mid-Cap ETF and $2.8bn for State Street SPDR S & P 400 Mid Cap Growth ETF.
IMCB costs 0.11 points a year less; their one-year returns differ by 4.3 points; MDYG is 1.6 times larger.
| IMCB | MDYG | |
|---|---|---|
| Expense ratio | 0.04% | 0.15% |
| Net assets | $1.7bn | $2.8bn |
| Total return, 1 year | +19.2% | +14.9% |
| What it tracks | Morningstar US Mid Cap Index | S&P MidCap 400 Growth Index |
| Holdings in common | 4% | |
| Top ten holdings, share of the fund | 7.9% | 13.6% |
| Below its high | 3.3%, high on Aug 14, 2026 | 8.2%, high on Aug 17, 2026 |
Holdings in common uses holdings dated Oct 19, 2026.
IMCB and MDYG are built for the same job. How do they differ in cost, holdings and results?
- What each follows. IMCB follows Morningstar US Mid Cap Index and MDYG follows S&P MidCap 400 Growth Index.
- Holdings in common. 4% of the weight is in the same securities (holdings dated Oct 19, 2026).
- One-year total return. Over 1 year to Oct 20, 2026 IMCB returned +19.2% and MDYG +14.9% with distributions reinvested, a gap of 4.3 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, IMCB and MDYG hold 4% of their money in the same securities at the same weight. Holdings dated Oct 19, 2026.
half
4% in common
On the same fields
IMCB and MDYG on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.
About IMCB
IMCB tracks an index. Over the year to Oct 20, 2026 it returned +19.2% with distributions reinvested. The prospectus expense ratio is 0.04% a year. By its holdings published by its issuer for Oct 19, 2026, 86% of the fund by weight is stocks the S&P 500 also holds, across 394 positions, with the top ten at 7.9%. It sat 3.3% below its high of Aug 14, 2026 on Oct 20, 2026.
About MDYG
MDYG tracks an index. Over the year to Oct 20, 2026 it returned +14.9% with distributions reinvested, against +14.9% for its benchmark, the S&P MidCap 400 Growth Index. The prospectus expense ratio is 0.15% 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 247 positions, with the top ten at 13.6%. It sat 8.2% below its high of Aug 17, 2026 on Oct 20, 2026.
Questions people ask
- Which returned more over the last year, IMCB or MDYG?
- In the year to Oct 20, 2026, with distributions reinvested, IMCB returned +19.2% and MDYG +14.9%.
- Which is cheaper, IMCB or MDYG?
- IMCB is cheaper, by 0.11 percentage points a year. That is about $11 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, IMCB against MDYG, data as of Oct 20, 2026. https://etfiq.com/compare/any/imcb-vs-mdyg
ETFIQ. (Oct 20, 2026). IMCB against MDYG. Retrieved from https://etfiq.com/compare/any/imcb-vs-mdyg
[IMCB against MDYG (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/imcb-vs-mdyg)
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