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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 SDY: how they differ

MDY and SDY hold 8% 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) S&P(R) Dividend ETF.

What they hold in common

By the books each fund has filed, MDY and SDY hold 8% of their money in the same securities at the same weight.

Positions MDY and SDY both hold, largest shared weight first
HoldingMDYSDY
RB GLOBAL INC0.60%0.60%
CARLISLE COMPANIES INC0.40%0.56%
LINCOLN ELECTRIC HOLDINGS INC0.40%0.54%
RPM INTERNATIONAL INC0.39%0.64%
GRACO INC0.35%0.50%
EQUITY LIFESTYLE PROPERTIES INC0.34%0.58%
ESSENTIAL UTILITIES INC0.30%0.54%
DONALDSON COMPANY INC0.29%0.48%
RYDER SYSTEM INC0.28%0.44%
UMB FINANCIAL CORP0.28%0.45%
CULLEN/FROST BANKERS INC0.27%0.45%
AMERICAN FINANCIAL GROUP INC0.27%0.46%
Largest positions each one holds and the other does not
Only in MDYOnly in SDY
TWILIO INC 0.86%Verizon Communications Inc 2.15%
CARPENTER TECHNOLOGY CORP 0.85%Realty Income Corp 2.14%
MKS INC 0.83%Kenvue Inc 1.76%
CURTISS-WRIGHT CORP 0.77%Kimberly-Clark Corp 1.75%
ENTEGRIS INC 0.76%AbbVie Inc 1.63%
NVENT ELECTRIC PLC 0.76%QUALCOMM Inc 1.57%
ATI INC 0.74%Texas Instruments Inc 1.56%
ILLUMINA INC 0.73%Target Corp 1.55%

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 SDY on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
MDY
SPDR S&P MidCap 400 ETF Trust
SDY
State Street(R) SPDR(R) S&P(R) Dividend ETF
Where it sitsCore index fundCore index fund
IssuerState StreetState Street
What it isS&P MidCap 400, book from IJHSPDR S&P Dividend
Total return, 1 year+13.0%+11.0%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−4.5 pts−6.5 pts
Expense ratio0.23%0.35%
Already in the S&P 5000.0%84.6%
Holdings400155

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.

SDY in plain words

SDY is an index equity fund tracking the SPDR S&P Dividend. Over the year to Sep 11, 2026 it returned +11.0% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.35% a year. By its holdings filed for Jun 30, 2026, 85% of the fund by weight is stocks the S&P 500 also holds, across 155 positions, with the top ten at 17.1%. It sat 3.9% below its high of Aug 24, 2026 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, MDY or SDY?
In the year to Sep 12, 2026, with distributions reinvested, MDY returned +13.0% and SDY returned +11.0%, so MDY returned more. One year is one year; the longer windows are in the table.
Which is cheaper, MDY or SDY?
MDY charges 0.23% a year and SDY charges 0.35%, so MDY is cheaper. Fees come from each fund's prospectus.
How much do MDY and SDY overlap with the S&P 500?
By their latest filed holdings, 0% of MDY and 85% of SDY by weight is stocks the S&P 500 already holds. Between the two funds, 8% 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.

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

A comparison is not a recommendation. Standards and sources