IWS vs MDYV: how they differ

IWS and MDYV hold 18% of their weight in the same names, and IWS returned +20.2% over the year. iShares Russell Mid-Cap Value ETF and State Street SPDR S & P 400 Mid Cap Value ETF.

MDYV costs 0.08 points a year less; their one-year returns differ by 9.8 points; IWS is 5.6 times larger.

IWSMDYV
Expense ratio0.23%0.15%
Net assets, IWS as of Oct 9, 2026 and MDYV as of Oct 8, 2026$15.3bn$2.7bn
Total return, 1 year+20.2%+10.4%
Holdings in common18%
Nasdaq-100, total return, 1 year+23.6%
Top ten holdings, share of the fund7.0%11.0%
Below its high4.6%, high on Aug 14, 20267.1%, high on Aug 14, 2026

Holdings in common uses holdings dated Oct 8, 2026.

+20.2%
IWS total return, 1 year
+10.4%
MDYV total return, 1 year
0.23%
IWS expense ratio
0.15%
MDYV expense ratio

What they hold in common

By the books each fund has filed, IWS and MDYV hold 18% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated Oct 8, 2026.

half

18% in common

Positions both hold, largest shared weight first
Holding IWS MDYV
ENTEGRIS INC 0.21% 0.90%
US FOODS HOLDING 0.21% 1.27%
RELIANCE STEEL & ALUMINUM 0.20% 1.23%
TD SYNNEX 0.20% 1.30%
NUTANIX CLASS A 0.19% 0.48%
HF SINCLAIR 0.18% 1.13%
ROIVANT SCIENCES LTD 0.18% 0.47%
EAST WEST BANCORP 0.17% 0.51%
OVINTIV 0.17% 1.06%
REINSURANCE GROUP OF AMERICA 0.17% 1.01%
WESCO INTERNATIONAL 0.17% 1.05%
MKS 0.16% 0.31%
Only in IWS
PHILLIPS 66 1.06%
HEWLETT PACKARD ENTERPRISE 0.94%
MODERNA 0.72%
MARATHON PETROLEUM 0.67%
DIGITAL REALTY TRUST REIT 0.65%
KINDER MORGAN 0.63%
ALLSTATE CORP 0.59%
AMETEK INC 0.57%
Only in MDYV
UMB FINANCIAL CORP 0.57%
PBF ENERGY INC CLASS A 0.53%
MURPHY USA INC 0.53%
AMERICAN AIRLINES GROUP INC 0.51%
OLD NATIONAL BANCORP 0.50%
LATTICE SEMICONDUCTOR CORP 0.44%
COMMERCIAL METALS CO 0.42%
FLUOR CORP 0.41%

Check overlap with more funds →

On the same fields

IWS
iShares Russell Mid-Cap Value ETF
MDYV
State Street SPDR S & P 400 Mid Cap Value ETF
Where it sits Stock ETF Stock ETF
What it is Tracks an index Tracks an index
Total return, 1 year +20.2% +10.4%
S&P 500 over the same days +17.3% +17.3%
Gap to the S&P 500 +3.0 pts −6.9 pts
Expense ratio 0.23% 0.15%
Already in the S&P 500 66.1% 0.0%
Holdings 719 296
Net assets, IWS as of Oct 9, 2026 and MDYV as of Oct 8, 2026 $15.3bn $2.7bn

IWS and MDYV on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.

IWS in plain words

IWS tracks an index. Over the year to Oct 9, 2026 it returned +20.2% with distributions reinvested, against +17.3% for the S&P 500 and +23.6% for the Nasdaq-100. The prospectus expense ratio is 0.23% a year. By its holdings published by its issuer for Oct 8, 2026, 66% of the fund by weight is stocks the S&P 500 also holds, across 719 positions, with the top ten at 7.0%. It sat 4.6% below its high of Aug 14, 2026 on Oct 9, 2026.

MDYV in plain words

MDYV tracks an index. Over the year to Oct 9, 2026 it returned +10.4% with distributions reinvested, against +17.3% for the S&P 500 and +23.6% for the Nasdaq-100. The prospectus expense ratio is 0.15% a year. By its holdings published by its issuer for Oct 8, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 296 positions, with the top ten at 11.0%. It sat 7.1% below its high of Aug 14, 2026 on Oct 9, 2026.

Questions people ask

Which returned more over the last year, IWS or MDYV?
In the year to Oct 9, 2026, with distributions reinvested, IWS returned +20.2% and MDYV +10.4%.
Which is cheaper, IWS or MDYV?
MDYV is cheaper, by 0.08 percentage points a year. On $10,000 held for a year that difference is about $8. Fees come from each fund's prospectus.
How much do IWS and MDYV overlap with the S&P 500?
By their latest filed holdings, 66% of IWS and 0% of MDYV by weight is stocks the S&P 500 already holds.
Other comparisons
Where these figures came from

ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.

How this is computed

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed.

Cite this page

ETFIQ, IWS against MDYV, data as of Oct 9, 2026. https://etfiq.com/compare/any/iws-vs-mdyv

Open data

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