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ITOT vs USMC: Differences, Returns & Fees

ITOT and USMC hold 42% of their weight in the same names, and ITOT returned +16.8% over the year. Net assets: $98.1bn on Oct 9, 2026 for iShares Core S&P Total U.S. Stock Market ETF, and $5.2bn on Oct 8, 2026 for Principal U.S. Mega-Cap ETF.

ITOT costs 0.09 points a year less; their one-year returns differ by 2.0 points; ITOT is 18.9 times larger.

ITOT vs USMC: Differences, Returns & Fees
ITOTUSMC
Expense ratio0.03%0.12%
Net assets, as of Oct 8, 2026$97.4bn$5.2bn
Total return, 1 year+16.8%+14.8%
What it tracksS&P Total U.S. Stock MarketNo index, actively managed
Holdings in common42%
Top ten holdings, share of the fund34.8%54.3%

Holdings in common uses holdings dated Jun 30, 2026 and Oct 9, 2026.

+16.8%
ITOT total return, 1 year
+14.8%
USMC total return, 1 year
0.03%
ITOT expense ratio
0.12%
USMC expense ratio

What they hold in common

By the books each fund has filed, ITOT and USMC hold 42% 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 Jun 30, 2026 and Oct 9, 2026.

half

42% in common

Positions both hold, largest shared weight first
Holding ITOT USMC
NVIDIA 7.35% 7.54%
APPLE 6.51% 6.63%
MICROSOFT 5.26% 4.30%
AMAZON.COM INC 3.41% 3.60%
ALPHABET CLASS A 2.73% 5.80%
BROADCOM INC 2.28% 4.77%
META PLATFORMS CLASS A 2.10% 3.51%
MICRON TECHNOLOGY 1.54% 8.75%
TESLA INC 1.43% 2.31%
BERKSHIRE HATHAWAY INC CLASS B 1.27% 3.10%
ELI LILLY 1.25% 2.52%
JPMORGAN CHASE & CO 1.17% 4.40%
Only in ITOT
ALPHABET CLASS C 2.19%
ADVANCED MICRO DEVICES 1.31%
EXXONMOBIL HOLDINGS CORP 0.92%
INTEL CORPORATION 0.69%
PALANTIR TECHNOLOGIES CLASS A 0.64%
CISCO SYSTEMS INC 0.62%
APPLIED MATERIAL INC 0.53%
LAM RESEARCH 0.53%
Only in USMC
General Electric Co 3.41%
Exxon Mobil Corp 1.99%

Check overlap with more funds →

On the same fields

ITOT
iShares Core S&P Total U.S. Stock Market ETF
USMC
Principal U.S. Mega-Cap ETF
Where it sits Stock ETF Stock ETF
Issuer iShares Principal
What it is Tracks the S&P Total U.S. Stock Market Actively managed
Total return, 1 year +16.8% +14.8%
Its benchmark over the same days not published +17.3% (VOO)
Gap to its benchmark not available −2.5 pts vs VOO
Expense ratio 0.03% 0.12%
Already in the S&P 500 88.1% 99.8%
Holdings 2459 26
Net assets, ITOT as of Oct 9, 2026 and USMC as of Oct 8, 2026 $98.1bn $5.2bn

ITOT and USMC 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 USMC

USMC is actively managed and tracks no index. Over the year to Oct 9, 2026 it returned +14.8% with distributions reinvested, against +17.3% for its benchmark, the S&P 500 Index. The prospectus expense ratio is 0.12% a year. By its holdings filed for Jun 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 26 positions, with the top ten at 54.3%.

Questions people ask

Which returned more over the last year, ITOT or USMC?
In the year to Oct 9, 2026, with distributions reinvested, ITOT returned +16.8% and USMC +14.8%.
Which is cheaper, ITOT or USMC?
ITOT is cheaper, by 0.09 percentage points a year. That is about $9 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do ITOT and USMC overlap with the S&P 500?
By their latest filed holdings, 88% of ITOT and 100% of USMC by weight is stocks the S&P 500 already holds.
Other comparisons
ITOT vs MGCITOT vs PBUSITOT vs XLGCGUS vs ITOTIVV vs USMCUSMC vs VOOUSMC vs VIGSCHX vs USMC
ITOT on its own →USMC on its own →Hold both: look the portfolio through →Rankings →Standards and sources →
Where these figures came from
ITOT filings on SEC EDGAR ↗ITOT prospectus with the expense ratio (SEC) ↗iShares page for ITOT ↗USMC filings on SEC EDGAR ↗USMC prospectus with the expense ratio (SEC) ↗Principal website ↗

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 USMC, data as of Oct 9, 2026. https://etfiq.com/compare/any/itot-vs-usmc

Open data

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