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IOO vs ITOT: Differences, Returns & Fees

IOO and ITOT hold 45% of their weight in the same names, and IOO returned +21.1% over the year. Net assets on Oct 9, 2026: $9.4bn for iShares Global 100 ETF and $98.1bn for iShares Core S&P Total U.S. Stock Market ETF.

ITOT costs 0.37 points a year less; their one-year returns differ by 4.3 points; ITOT is 10.5 times larger.

IOO vs ITOT: Differences, Returns & Fees
IOOITOT
Expense ratio0.40%0.03%
Net assets$9.4bn$98.1bn
Total return, 1 year+21.1%+16.8%
What it tracksS&P Global 100S&P Total U.S. Stock Market
Holdings in common45%
Top ten holdings, share of the fund59.9%34.8%

Holdings in common uses holdings dated Oct 9, 2026.

+21.1%
IOO total return, 1 year
+16.8%
ITOT total return, 1 year
0.40%
IOO expense ratio
0.03%
ITOT expense ratio

What they hold in common

By the books each fund has filed, IOO and ITOT hold 45% 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

45% in common

Positions both hold, largest shared weight first
Holding IOO ITOT
NVIDIA 13.21% 7.35%
APPLE 11.70% 6.51%
MICROSOFT 9.46% 5.26%
AMAZON.COM INC 6.13% 3.41%
ALPHABET CLASS A 4.91% 2.73%
BROADCOM INC 4.10% 2.28%
ALPHABET CLASS C 3.94% 2.19%
ELI LILLY 2.25% 1.25%
JPMORGAN CHASE & CO 2.11% 1.17%
EXXONMOBIL HOLDINGS CORP 1.65% 0.92%
JOHNSON & JOHNSON 1.50% 0.83%
INTEL CORPORATION 1.24% 0.69%
Only in IOO
SAMSUNG ELECTRONICS LTD 2.12%
ASML HOLDING 1.65%
TENCENT HOLDINGS 0.80%
HSBC HOLDINGS PLC 0.75%
SHELL 0.69%
MITSUBISHI UFJ FINANCIAL GROUP 0.62%
NOVARTIS AG 0.62%
ASTRAZENECA PLC 0.58%
Only in ITOT
META PLATFORMS CLASS A 2.10%
MICRON TECHNOLOGY 1.54%
TESLA INC 1.43%
ADVANCED MICRO DEVICES 1.31%
BERKSHIRE HATHAWAY INC CLASS B 1.27%
VISA CLASS A 0.87%
ABBVIE 0.65%
PALANTIR TECHNOLOGIES CLASS A 0.64%

Check overlap with more funds →

On the same fields

IOO
iShares Global 100 ETF
ITOT
iShares Core S&P Total U.S. Stock Market ETF
Where it sits Stock ETF Stock ETF
Issuer iShares iShares
What it is Tracks an index Tracks the S&P Total U.S. Stock Market
Total return, 1 year +21.1% +16.8%
Expense ratio 0.40% 0.03%
Already in the S&P 500 79.0% 88.1%
Holdings 104 2459
Net assets $9.4bn $98.1bn

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

About IOO

IOO tracks an index. Over the year to Oct 9, 2026 it returned +21.1% with distributions reinvested. The prospectus expense ratio is 0.40% a year. By its holdings published by its issuer for Oct 9, 2026, 79% of the fund by weight is stocks the S&P 500 also holds, across 104 positions, with the top ten at 59.9%.

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%.

Questions people ask

Which returned more over the last year, IOO or ITOT?
In the year to Oct 9, 2026, with distributions reinvested, IOO returned +21.1% and ITOT +16.8%.
Which is cheaper, IOO or ITOT?
ITOT is cheaper, by 0.37 percentage points a year. That is about $37 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do IOO and ITOT overlap with the S&P 500?
By their latest filed holdings, 79% of IOO and 88% of ITOT by weight is stocks the S&P 500 already holds.
Other comparisons
IOO vs VIGIOO vs SCHXIOO vs VVIOO vs SPYMITOT vs THROITOT vs RECSITOT vs SCHKITOT vs USMC
IOO on its own →ITOT on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
IOO and ITOT filings on SEC EDGAR ↗IOO and ITOT prospectus with the expense ratio (SEC) ↗iShares page for IOO ↗iShares page for ITOT ↗

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

Open data

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