MDY vs MLRG: Differences, Returns & Fees
MDY and MLRG hold 1% of their weight in the same names, and MLRG returned +15.5% over the year. Net assets on Oct 20, 2026: $25.8bn for SPDR S&P MidCap 400 ETF Trust and $1.3bn for iShares MSCI USA ETF.
MLRG costs 0.20 points a year less; their one-year returns differ by 2.4 points; MDY is 19.5 times larger.
| MDY | MLRG | |
|---|---|---|
| Expense ratio | 0.23% | 0.03% |
| Net assets | $25.8bn | $1.3bn |
| Total return, 1 year | +13.1% | +15.5% |
| What it tracks | S&P MidCap 400 Index | MSCI USA Index |
| Holdings in common | 1% | |
| Top ten holdings, share of the fund | 7.4% | 37.8% |
| Below its high | 6.7%, high on Aug 14, 2026 | |
Holdings in common uses holdings dated Oct 19, 2026.
MDY and MLRG are built for the same job. How do they differ in cost, holdings and results?
- What each follows. MDY follows S&P MidCap 400 Index and MLRG follows MSCI USA Index.
- Holdings in common. 1% of the weight is in the same securities (holdings dated Oct 19, 2026).
- One-year total return. Over 1 year to Oct 20, 2026 MDY returned +13.1% and MLRG +15.5% with distributions reinvested, a gap of 2.4 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, MDY and MLRG hold 1% of their money in the same securities at the same weight. Holdings dated Oct 19, 2026.
half
1% in common
On the same fields
MDY and MLRG on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.
About MDY
MDY tracks the S&P MidCap 400. Over the year to Oct 20, 2026 it returned +13.1% with distributions reinvested, against +13.4% for its benchmark, the S&P MidCap 400 Index. The prospectus expense ratio is 0.23% 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 7.4%. It sat 6.7% below its high of Aug 14, 2026 on Oct 20, 2026.
About MLRG
MLRG tracks an index. Over the year to Oct 20, 2026 it returned +15.5% with distributions reinvested, against +15.4% for its benchmark, the MSCI USA Index. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 19, 2026, 96% of the fund by weight is stocks the S&P 500 also holds, across 515 positions, with the top ten at 37.8%.
Questions people ask
- Which returned more over the last year, MDY or MLRG?
- In the year to Oct 20, 2026, with distributions reinvested, MDY returned +13.1% and MLRG +15.5%.
- Which is cheaper, MDY or MLRG?
- MLRG is cheaper, by 0.20 percentage points a year. That is about $20 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, MDY against MLRG, data as of Oct 20, 2026. https://etfiq.com/compare/any/mdy-vs-mlrg
ETFIQ. (Oct 20, 2026). MDY against MLRG. Retrieved from https://etfiq.com/compare/any/mdy-vs-mlrg
[MDY against MLRG (ETFIQ, Oct 20, 2026)](https://etfiq.com/compare/any/mdy-vs-mlrg)
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