MDYG vs PRFZ: Differences, Returns & Fees

MDYG and PRFZ hold 16% of their weight in the same names, and PRFZ returned +16.1% over the year. Net assets on Oct 20, 2026: $2.8bn for State Street SPDR S & P 400 Mid Cap Growth ETF and $2.6bn for Invesco RAFI US 1500 Small-Mid ETF.

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MDYG costs 0.21 points a year less; their one-year returns differ by 1.2 points.

MDYG vs PRFZ: Differences, Returns & Fees
MDYGPRFZ
Expense ratio0.15%0.36%
Net assets$2.8bn$2.6bn
Total return, 1 year+14.9%+16.1%
What it tracksS&P MidCap 400 Growth IndexRAFI Fundamental Select US 1500 Index
Holdings in common16%
Top ten holdings, share of the fund13.6%4.0%
Below its high8.2%, high on Aug 17, 20266.9%, high on Aug 14, 2026

Holdings in common uses holdings dated Oct 19, 2026.

+14.9%
MDYG total return, 1 year
+16.1%
PRFZ total return, 1 year
0.15%
MDYG expense ratio
0.36%
PRFZ expense ratio

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Client brief · page 1 of 2Report BR-80E03880E8

MDYG and PRFZ are built for the same job. How do they differ in cost, holdings and results?

  1. What each follows. MDYG follows S&P MidCap 400 Growth Index and PRFZ follows RAFI Fundamental Select US 1500 Index.
  2. Holdings in common. 16% of the weight is in the same securities (holdings dated Oct 19, 2026).
  3. Number of holdings. MDYG holds 247 positions and PRFZ holds 1491.

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, MDYG and PRFZ hold 16% of their money in the same securities at the same weight. Holdings dated Oct 19, 2026.

half

16% in common

Positions both hold, largest shared weight first
Holding MDYG PRFZ
DOCUSIGN INC 0.50% 0.42%
DYNATRACE INC 1.03% 0.38%
ATI INC 1.49% 0.34%
HALOZYME THERAPEUTICS INC 0.81% 0.34%
ROIVANT SCIENCES LTD 0.63% 0.32%
MANHATTAN ASSOCIATES INC 0.46% 0.31%
CORCEPT THERAPEUTICS INC 0.62% 0.30%
QUALYS INC 0.38% 0.29%
VIAVI SOLUTIONS INC 0.50% 0.28%
WATTS WATER TECHNOLOGIES A 0.57% 0.28%
HUBSPOT INC 0.42% 0.28%
EXLSERVICE HOLDINGS INC 0.35% 0.27%
Only in MDYG
OKTA INC 1.83%
TECHNIPFMC PLC 1.59%
UNITED THERAPEUTICS CORP 1.35%
NVENT ELECTRIC PLC 1.33%
XPO INC 1.26%
TENET HEALTHCARE CORP 1.24%
ROKU INC 1.19%
ROYAL GOLD INC 1.16%
Only in PRFZ
Iovance Biotherapeutics Inc 0.46%
Paycom Software Inc 0.45%
Crescent Energy Co 0.42%
SharkNinja Inc 0.41%
10X Genomics Inc 0.39%
Par Pacific Holdings Inc 0.38%
Cracker Barrel Old Country Store Inc 0.38%
Iridium Communications Inc 0.34%

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On the same fields

MDYG
State Street SPDR S & P 400 Mid Cap Growth ETF
PRFZ
Invesco RAFI US 1500 Small-Mid ETF
Where it sits Stock ETF Stock ETF
What it is Tracks an index Tracks an index
Total return, 1 year +14.9% +16.1%
Its benchmark over the same days +14.9% (IJK) +15.0% (IWV)
Gap to its benchmark 0.0 pts vs IJK +1.0 pts vs IWV
Expense ratio 0.15% 0.36%
Already in the S&P 500 0.0% 1.8%
Holdings 247 1491
Net assets $2.8bn $2.6bn

MDYG and PRFZ on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.

About MDYG

MDYG tracks an index. Over the year to Oct 20, 2026 it returned +14.9% with distributions reinvested, against +14.9% for its benchmark, the S&P MidCap 400 Growth Index. The prospectus expense ratio is 0.15% 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 247 positions, with the top ten at 13.6%. It sat 8.2% below its high of Aug 17, 2026 on Oct 20, 2026.

About PRFZ

PRFZ tracks an index. The prospectus expense ratio is 0.36% a year. By its holdings published by its issuer for Oct 19, 2026, 2% of the fund by weight is stocks the S&P 500 also holds, across 1,491 positions, with the top ten at 4.0%. It sat 6.9% below its high of Aug 14, 2026 on Oct 20, 2026.

Over the year to Oct 20, 2026 it returned +16.1% with distributions reinvested, against +15.0% for its benchmark, the Russell 3000 Index.

Questions people ask

Which returned more over the last year, MDYG or PRFZ?
In the year to Oct 20, 2026, with distributions reinvested, MDYG returned +14.9% and PRFZ +16.1%.
Which is cheaper, MDYG or PRFZ?
MDYG is cheaper, by 0.21 percentage points a year. That is about $21 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do MDYG and PRFZ overlap with the S&P 500?
By their latest filed holdings, 0% of MDYG and 2% of PRFZ by weight is stocks the S&P 500 already holds.
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ETFIQ, MDYG against PRFZ, data as of Oct 20, 2026. https://etfiq.com/compare/any/mdyg-vs-prfz

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Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.