Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
IJS vs MDY: how they differ
IJS and MDY hold 0% of their weight in the same names, and IJS returned more over the year.
iShares S&P Small-Cap 600 Value ETF and SPDR S&P MidCap 400 ETF Trust.
What they hold in common
By the books each fund has filed, IJS and MDY hold 0% of their money in the same securities at the same weight.
| Only in IJS | Only in MDY |
|---|---|
| MOLINA HEALTHCARE INC 1.30% | TWILIO INC 0.86% |
| MATCH GROUP INC 0.97% | CARPENTER TECHNOLOGY CORP 0.85% |
| EASTMAN CHEMICAL COMPANY 0.84% | MKS INC 0.83% |
| CARMAX INC 0.82% | CURTISS-WRIGHT CORP 0.77% |
| KULICKE AND SOFFA INDUSTRIES INC 0.77% | ENTEGRIS INC 0.76% |
| POOL CORP 0.75% | NVENT ELECTRIC PLC 0.76% |
| LKQ CORP 0.73% | ATI INC 0.74% |
| VISHAY INTERTECHNOLOGY INC 0.73% | ILLUMINA INC 0.73% |
Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026.
| IJS iShares S&P Small-Cap 600 Value ETF | MDY SPDR S&P MidCap 400 ETF Trust | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | State Street |
| What it is | S&P Small-Cap 600 Value | S&P MidCap 400, book from IJH |
| Total return, 1 year | +22.1% | +13.0% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | +4.7 pts | −4.5 pts |
| Expense ratio | 0.18% | 0.23% |
| Already in the S&P 500 | 0.0% | 0.0% |
| Holdings | 461 | 400 |
IJS in plain words
IJS is an index equity fund tracking the S&P Small-Cap 600 Value. Over the year to Sep 11, 2026 it returned +22.1% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.18% a year. By its holdings filed for Jun 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 461 positions, with the top ten at 8.3%. It sat 4.3% below its high of Aug 14, 2026 on Sep 11, 2026.
MDY in plain words
MDY is an index equity fund tracking the S&P MidCap 400. Over the year to Sep 11, 2026 it returned +13.0% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.23% a year. By its holdings filed for Jun 30, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 400 positions, with the top ten at 7.7%. It sat 5.3% below its high of Aug 14, 2026 on Sep 11, 2026.
Questions people ask
- Which returned more over the last year, IJS or MDY?
- In the year to Sep 12, 2026, with distributions reinvested, IJS returned +22.1% and MDY returned +13.0%, so IJS returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, IJS or MDY?
- IJS charges 0.18% a year and MDY charges 0.23%, so IJS is cheaper. Fees come from each fund's prospectus.
- How much do IJS and MDY overlap with the S&P 500?
- By their latest filed holdings, 0% of IJS and 0% of MDY by weight is stocks the S&P 500 already holds. Between the two funds, 0% of their books are the same securities at the same weight.
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, IJS against MDY, data as of Sep 12, 2026. https://etfiq.com/compare/any/IJS-MDY Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources