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Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

MDY vs SPSB: how they differ

MDY and SPSB hold 0% of their weight in the same names, and MDY returned more over the year.

SPDR S&P MidCap 400 ETF Trust and State Street(R) SPDR(R) Portfolio Short Term Corporate Bond ETF.

What they hold in common

By the books each fund has filed, MDY and SPSB hold 0% of their money in the same securities at the same weight.

Largest positions each one holds and the other does not
Only in MDYOnly in SPSB
TWILIO INC 0.86%SALESFORCE INC 0.59%
CARPENTER TECHNOLOGY CORP 0.85%AERCAP IRELAND CAP/GLOBA 0.46%
MKS INC 0.83%BANK OF AMERICA CORP 0.44%
CURTISS-WRIGHT CORP 0.77%CITIGROUP INC 0.44%
ENTEGRIS INC 0.76%MORGAN STANLEY 0.40%
NVENT ELECTRIC PLC 0.76%JPMORGAN CHASE & CO 0.39%
ATI INC 0.74%PFIZER INVESTMENT ENTER 0.39%
ILLUMINA INC 0.73%SPRINT CAPITAL CORP 0.39%

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.

MDY and SPSB on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
MDY
SPDR S&P MidCap 400 ETF Trust
SPSB
State Street(R) SPDR(R) Portfolio Short Term Corporate Bond ETF
Where it sitsCore index fundCore index fund
IssuerState StreetState Street
What it isS&P MidCap 400, book from IJHSPDR Portfolio Short Term Corporate Bond
Total return, 1 year+13.0%+2.5%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−4.5 pts−15.1 pts
Expense ratio0.23%0.04%
Holdings4001599

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.

SPSB in plain words

SPSB is a bond fund tracking the SPDR Portfolio Short Term Corporate Bond. Over the year to Sep 11, 2026 it returned +2.5% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.04% a year.

Questions people ask

Which returned more over the last year, MDY or SPSB?
In the year to Sep 12, 2026, with distributions reinvested, MDY returned +13.0% and SPSB returned +2.5%, so MDY returned more. One year is one year; the longer windows are in the table.
Which is cheaper, MDY or SPSB?
MDY charges 0.23% a year and SPSB charges 0.04%, so SPSB is cheaper. Fees come from each fund's prospectus.

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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.

MDY against SPSB, ETFIQ, data as of Sep 12, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, MDY against SPSB, data as of Sep 12, 2026. https://etfiq.com/compare/any/MDY-SPSB Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources