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IOO vs IVV: Differences, Returns & Fees

IOO and IVV hold 51% 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 $896.4bn for iShares Core S&P 500 ETF.

IVV costs 0.37 points a year less; their one-year returns differ by 3.8 points; IVV is far larger, $896.4bn against $9.4bn.

IOO vs IVV: Differences, Returns & Fees
IOOIVV
Expense ratio0.40%0.03%
Net assets$9.4bn$896.4bn
Total return, 1 year+21.1%+17.3%
What it tracksS&P Global 100S&P 500
Holdings in common51%
Top ten holdings, share of the fund59.9%39.0%

Holdings in common uses holdings dated Oct 9, 2026.

+21.1%
IOO total return, 1 year
+17.3%
IVV total return, 1 year
0.40%
IOO expense ratio
0.03%
IVV expense ratio

What they hold in common

By the books each fund has filed, IOO and IVV hold 51% 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

51% in common

Positions both hold, largest shared weight first
Holding IOO IVV
NVIDIA 13.21% 8.23%
APPLE 11.70% 7.29%
MICROSOFT 9.46% 5.89%
AMAZON.COM INC 6.13% 3.82%
ALPHABET CLASS A 4.91% 3.06%
BROADCOM INC 4.10% 2.55%
ALPHABET CLASS C 3.94% 2.45%
ELI LILLY 2.25% 1.40%
JPMORGAN CHASE & CO 2.11% 1.31%
EXXONMOBIL HOLDINGS CORP 1.65% 1.03%
JOHNSON & JOHNSON 1.50% 0.93%
INTEL CORPORATION 1.24% 0.77%
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 IVV
META PLATFORMS CLASS A 2.35%
MICRON TECHNOLOGY 1.72%
TESLA INC 1.60%
ADVANCED MICRO DEVICES 1.47%
BERKSHIRE HATHAWAY INC CLASS B 1.42%
VISA CLASS A 0.97%
ABBVIE 0.72%
PALANTIR TECHNOLOGIES CLASS A 0.71%

Check overlap with more funds →

On the same fields

IOO
iShares Global 100 ETF
IVV
iShares Core S&P 500 ETF
Where it sits Stock ETF Stock ETF
Issuer iShares iShares
What it is Tracks an index Tracks the S&P 500
Total return, 1 year +21.1% +17.3%
Its benchmark over the same days not published +17.3% (SPY)
Gap to its benchmark not available +0.1 pts vs SPY
Expense ratio 0.40% 0.03%
Already in the S&P 500 79.0% 99.8%
Holdings 104 505
Net assets $9.4bn $896.4bn

IOO and IVV 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 IVV

IVV tracks the S&P 500. Over the year to Oct 9, 2026 it returned +17.3% with distributions reinvested, against +17.3% for its benchmark, the S&P 500. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 9, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 505 positions, with the top ten at 39.0%.

Questions people ask

Which returned more over the last year, IOO or IVV?
In the year to Oct 9, 2026, with distributions reinvested, IOO returned +21.1% and IVV +17.3%.
Which is cheaper, IOO or IVV?
IVV 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 IVV overlap with the S&P 500?
By their latest filed holdings, 79% of IOO and 100% of IVV by weight is stocks the S&P 500 already holds.
Other comparisons
IOO vs SPYIOO vs VOOIOO vs VTIIOO vs ITOTIVV vs MGCIVV vs THROIVV vs RECSIVV vs SCHK
IOO on its own →IVV on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
IOO and IVV filings on SEC EDGAR ↗IOO and IVV prospectus with the expense ratio (SEC) ↗iShares page for IOO ↗iShares page for IVV ↗

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 IVV, data as of Oct 9, 2026. https://etfiq.com/compare/any/ioo-vs-ivv

Open data

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