Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
MDY vs SHY: how they differ
MDY and SHY hold 0% of their weight in the same names, and MDY returned more over the year.
SPDR S&P MidCap 400 ETF Trust and iShares 1-3 Year Treasury Bond ETF.
What they hold in common
By the books each fund has filed, MDY and SHY hold 0% of their money in the same securities at the same weight.
| Only in MDY | Only in SHY |
|---|---|
| TWILIO INC 0.86% | United States of America 1.97% |
| CARPENTER TECHNOLOGY CORP 0.85% | United States of America 1.86% |
| MKS INC 0.83% | United States of America 1.72% |
| CURTISS-WRIGHT CORP 0.77% | United States of America 1.62% |
| ENTEGRIS INC 0.76% | United States of America 1.61% |
| NVENT ELECTRIC PLC 0.76% | United States of America 1.53% |
| ATI INC 0.74% | United States of America 1.49% |
| ILLUMINA INC 0.73% | United States of America 1.47% |
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 and May 31, 2026.
| MDY SPDR S&P MidCap 400 ETF Trust | SHY iShares 1-3 Year Treasury Bond ETF | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | State Street | iShares |
| What it is | S&P MidCap 400, book from IJH | 1-3 Year Treasury Bond |
| Total return, 1 year | +13.0% | +1.7% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −4.5 pts | −15.8 pts |
| Expense ratio | 0.23% | 0.15% |
| Holdings | 400 | 89 |
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.
SHY in plain words
SHY is a bond fund tracking the 1-3 Year Treasury Bond. Over the year to Sep 11, 2026 it returned +1.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.15% a year.
Questions people ask
- Which returned more over the last year, MDY or SHY?
- In the year to Sep 12, 2026, with distributions reinvested, MDY returned +13.0% and SHY returned +1.7%, so MDY returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, MDY or SHY?
- MDY charges 0.23% a year and SHY charges 0.15%, so SHY is cheaper. Fees come from each fund's prospectus.
Other comparisons
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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, MDY against SHY, data as of Sep 12, 2026. https://etfiq.com/compare/any/MDY-SHY Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources