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ITOT vs IYY: Differences, Returns & Fees

ITOT and IYY hold 96% of their weight in the same names. Net assets on Oct 9, 2026: $98.1bn for iShares Core S&P Total U.S. Stock Market ETF and $3.1bn for iShares Dow Jones U.S. ETF.

ITOT costs 0.17 points a year less; both returned +16.8% over a year; ITOT is far larger, $98.1bn against $3.1bn.

ITOT vs IYY: Differences, Returns & Fees
ITOTIYY
Expense ratio0.03%0.20%
Net assets$98.1bn$3.1bn
Total return, 1 year+16.8%+16.8%
What it tracksS&P Total U.S. Stock MarketDow Jones U.S. Index
Holdings in common96%
Top ten holdings, share of the fund34.8%36.4%

Holdings in common uses holdings dated Oct 9, 2026.

+16.8%
ITOT total return, 1 year
+16.8%
IYY total return, 1 year
0.03%
ITOT expense ratio
0.20%
IYY expense ratio

What they hold in common

By the books each fund has filed, ITOT and IYY hold 96% 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 9, 2026.

half

96% in common

Positions both hold, largest shared weight first
Holding ITOT IYY
NVIDIA 7.35% 7.68%
APPLE 6.51% 6.80%
MICROSOFT 5.26% 5.50%
AMAZON.COM INC 3.41% 3.56%
ALPHABET CLASS A 2.73% 2.86%
BROADCOM INC 2.28% 2.38%
ALPHABET CLASS C 2.19% 2.29%
META PLATFORMS CLASS A 2.10% 2.19%
MICRON TECHNOLOGY 1.54% 1.61%
TESLA INC 1.43% 1.49%
ADVANCED MICRO DEVICES 1.31% 1.37%
BERKSHIRE HATHAWAY INC CLASS B 1.27% 1.33%
Only in ITOT
BITMINE IMMERSION TECHNOLOGIES 0.02%
HECLA MINING 0.02%
SANMINA 0.02%
SEMTECH 0.02%
10X GENOMICS CLASS A 0.01%
AAON 0.01%
AAR 0.01%
ABERCROMBIE AND FITCH CLASS A 0.01%
Only in IYY
ANGLOGOLD ASHANTI PLC 0.06%
VIKING HOLDINGS LTD 0.02%
AMDOCS 0.01%
GLOBALFOUNDRIES 0.01%
PERSHING SQUARE INC 0.00%

Check overlap with more funds →

On the same fields

ITOT
iShares Core S&P Total U.S. Stock Market ETF
IYY
iShares Dow Jones U.S. ETF
Where it sits Stock ETF Stock ETF
Issuer iShares iShares
What it is Tracks the S&P Total U.S. Stock Market Tracks an index
Total return, 1 year +16.8% +16.8%
Expense ratio 0.03% 0.20%
Already in the S&P 500 88.1% 92.0%
Holdings 2459 941
Net assets $98.1bn $3.1bn

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

About ITOT

ITOT tracks the S&P Total U.S. Stock Market. Over the year to Oct 9, 2026 it returned +16.8% with distributions reinvested. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 9, 2026, 88% of the fund by weight is stocks the S&P 500 also holds, across 2,459 positions, with the top ten at 34.8%.

About IYY

IYY tracks an index. The prospectus expense ratio is 0.20% a year. By its holdings published by its issuer for Oct 9, 2026, 92% of the fund by weight is stocks the S&P 500 also holds, across 941 positions, with the top ten at 36.4%.

Questions people ask

Which returned more over the last year, ITOT or IYY?
In the year to Oct 9, 2026, with distributions reinvested, ITOT returned +16.8% and IYY +16.8%.
Which is cheaper, ITOT or IYY?
ITOT is cheaper, by 0.17 percentage points a year. That is about $17 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do ITOT and IYY overlap with the S&P 500?
By their latest filed holdings, 88% of ITOT and 92% of IYY by weight is stocks the S&P 500 already holds.
Other comparisons
ITOT vs SNPEITOT vs USCLITOT vs SPYXITOT vs JMOMIYY vs VIGIYY vs SCHXIYY vs VVIYY vs SPYM
ITOT on its own →IYY on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
ITOT and IYY filings on SEC EDGAR ↗ITOT prospectus with the expense ratio (SEC) ↗iShares page for ITOT ↗IYY prospectus with the expense ratio (SEC) ↗iShares page for IYY ↗

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

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, ITOT against IYY, data as of Oct 9, 2026. https://etfiq.com/compare/any/itot-vs-iyy

Open data

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