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DFUS vs IOO: Differences, Returns & Fees

DFUS and IOO hold 43% of their weight in the same names, and IOO returned +21.1% over the year. Net assets: $20.9bn on Jul 31, 2026 for Dimensional U.S. Equity Market ETF, and $9.4bn on Oct 9, 2026 for iShares Global 100 ETF.

DFUS costs 0.31 points a year less; their one-year returns differ by 3.8 points; DFUS is 2.3 times larger.

DFUS vs IOO: Differences, Returns & Fees
DFUSIOO
Expense ratio0.09%0.40%
Net assets, as of Jul 31, 2026$20.9bn$8.9bn
Total return, 1 year+17.3%+21.1%
What it tracksNo index, actively managedS&P Global 100
Holdings in common43%
Top ten holdings, share of the fund34.6%59.9%

Holdings in common uses holdings dated Jul 31, 2026 and Oct 9, 2026.

+17.3%
DFUS total return, 1 year
+21.1%
IOO total return, 1 year
0.09%
DFUS expense ratio
0.40%
IOO expense ratio

What they hold in common

By the books each fund has filed, DFUS and IOO hold 43% 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 Jul 31, 2026 and Oct 9, 2026.

half

43% in common

Positions both hold, largest shared weight first
Holding DFUS IOO
NVIDIA CORPORATION 6.75% 13.21%
APPLE INC. 6.45% 11.70%
MICROSOFT CORPORATION 4.99% 9.46%
AMAZON.COM, INC. 3.83% 6.13%
ALPHABET INC. 3.00% 4.91%
BROADCOM INC. 2.63% 4.10%
ALPHABET INC. 2.48% 3.94%
JPMORGAN CHASE & CO. 1.37% 2.11%
EXXONMOBIL HOLDINGS CORPORATION 0.94% 1.65%
JOHNSON & JOHNSON 0.90% 1.50%
WALMART INC. 0.71% 1.18%
MASTERCARD INCORPORATED 0.68% 1.13%
Only in DFUS
META PLATFORMS, INC. 1.77%
BERKSHIRE HATHAWAY INC. 1.38%
MICRON TECHNOLOGY, INC. 1.35%
ELI LILLY AND COMPANY 1.33%
TESLA, INC. 1.27%
ADVANCED MICRO DEVICES, INC. 1.12%
VISA INC. 0.88%
ABBVIE INC. 0.64%
Only in IOO
ELI LILLY 2.25%
SAMSUNG ELECTRONICS LTD 2.12%
ASML HOLDING 1.65%
TENCENT HOLDINGS 0.80%
GE AEROSPACE 0.76%
HSBC HOLDINGS PLC 0.75%
ROCHE PS PAR AG 0.72%
SHELL 0.69%

Check overlap with more funds →

On the same fields

DFUS
Dimensional U.S. Equity Market ETF
IOO
iShares Global 100 ETF
Where it sits Stock ETF Stock ETF
Issuer Dimensional iShares
What it is Actively managed Tracks an index
Total return, 1 year +17.3% +21.1%
Its benchmark over the same days +16.7% (IWV) not published
Gap to its benchmark +0.6 pts vs IWV not available
Expense ratio 0.09% 0.40%
Already in the S&P 500 89.4% 79.0%
Holdings 2236 104
Net assets, DFUS as of Jul 31, 2026 and IOO as of Oct 9, 2026 $20.9bn $9.4bn

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

About DFUS

DFUS is actively managed and tracks no index. The prospectus expense ratio is 0.09% a year. By its holdings filed for Jul 31, 2026, 89% of the fund by weight is stocks the S&P 500 also holds, across 2,236 positions, with the top ten at 34.6%.

Over the year to Oct 9, 2026 it returned +17.3% with distributions reinvested, against +16.7% for its benchmark, the Russell 3000 Index.

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%.

Questions people ask

Which returned more over the last year, DFUS or IOO?
In the year to Oct 9, 2026, with distributions reinvested, DFUS returned +17.3% and IOO +21.1%.
Which is cheaper, DFUS or IOO?
DFUS is cheaper, by 0.31 percentage points a year. That is about $31 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do DFUS and IOO overlap with the S&P 500?
By their latest filed holdings, 89% of DFUS and 79% of IOO by weight is stocks the S&P 500 already holds.
Other comparisons
DFUS vs FELCDFUS vs THRODFUS vs RECSDFUS vs SCHKIOO vs OEFIOO vs IWVIOO vs MTUMIOO vs SPHQ
DFUS on its own →IOO on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
DFUS filings on SEC EDGAR ↗DFUS prospectus with the expense ratio (SEC) ↗Dimensional website ↗IOO filings on SEC EDGAR ↗IOO prospectus with the expense ratio (SEC) ↗iShares page for IOO ↗

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

Open data

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