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Data as of Oct 28, 2026.

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ITOT vs MDY: Differences, Returns & Fees

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Over the year to Oct 28, 2026, ITOT returned +13.4% to MDY's +12.8%; 5% of their weight is in the same names.

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Net assets on Oct 27, 2026: $97.1bn for iShares Core S&P Total U.S. Stock Market ETF and $25.9bn for SPDR S&P MidCap 400 ETF Trust.

ITOT on its own →MDY on its own →
At a glance
+13.4%
ITOT total return, 1 year
+12.8%
MDY total return, 1 year
0.03%
ITOT expense ratio
0.23%
MDY expense ratio

Pair scorecard

ITOT costs 0.20 points a year less; their one-year returns differ by 0.6 points; ITOT is 3.7 times larger.

ITOT vs MDY: Differences, Returns & Fees
MeasureITOTMDY
Return
Total return, 1 year+13.4%+12.8%
Drawdown
Below its high6.5%, high on Aug 14, 2026
Benchmark
What it tracksS&P Total Market Index (TMI)S&P MidCap 400 Index
Cost and size
Expense ratio0.03%0.23%
Net assets, as of Oct 27, 2026$97.1bn$25.9bn
Holdings
Holdings in common5%
Top ten holdings, share of the fund33.9%7.5%

Holdings in common uses holdings dated Oct 27, 2026. Method

What they share

5%

By the books each fund has filed, ITOT and MDY hold 5% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

0 half 100%

half

5% in common

Positions both hold · largest shared weight first ITOT MDY
OKTA CLASS A 0.05% 1.09%
TECHNIPFMC PLC 0.04% 0.81%
ATI 0.03% 0.66%
ENTEGRIS INC 0.03% 0.66%
NUTANIX CLASS A 0.03% 0.57%
NVENT ELECTRIC PLC 0.03% 0.63%
OVINTIV 0.03% 0.57%
PERMIAN RESOURCES CLASS A 0.03% 0.62%
RELIANCE STEEL & ALUMINUM 0.03% 0.64%
ROIVANT SCIENCES LTD 0.03% 0.57%
ROKU CLASS A 0.03% 0.60%
ROYAL GOLD 0.03% 0.59%
Only in one fund ↓
Only in ITOT
NVIDIA 7.06%
APPLE 6.78%
MICROSOFT 5.28%
AMAZON.COM INC 3.32%
ALPHABET CLASS A 2.52%
BROADCOM INC 2.18%
ALPHABET CLASS C 2.02%
META PLATFORMS CLASS A 1.83%
Only in MDY
U.S. Dollar 0.96%
Check overlap with more funds →

Side by side

ITOT iShares Core S&P Total U.S. Stock Market ETF MDY SPDR S&P MidCap 400 ETF Trust
Where it sits Stock ETF Stock ETF
Issuer iShares State Street
What it is Tracks the S&P Total U.S. Stock Market Tracks the S&P MidCap 400
Total return, 1 year +13.4% +12.8%
Its benchmark over the same days not measured +13.2% (IJH)
Gap to its benchmark not measured −0.4 pts vs IJH
Expense ratio 0.03% 0.23%
Already in the S&P 500 88.1% 0.0%
Holdings 2443 401
Net assets, as of Oct 27, 2026 $97.1bn $25.9bn

ITOT and MDY on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

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About each fund
ITOT

ITOT tracks the S&P Total U.S. Stock Market. Over the year to Oct 28, 2026 it returned +13.4% with distributions reinvested. The prospectus expense ratio is 0.03% a year. By its holdings published by its issuer for Oct 27, 2026, 88% of the fund by weight is stocks the S&P 500 also holds, across 2,443 positions, with the top ten at 33.9%.

MDY

MDY tracks the S&P MidCap 400. Over the year to Oct 28, 2026 it returned +12.8% with distributions reinvested, against +13.2% for its benchmark, the S&P MidCap 400 Index. The prospectus expense ratio is 0.23% a year. By its holdings published by its issuer for Oct 27, 2026, 0% of the fund by weight is stocks the S&P 500 also holds, across 401 positions, with the top ten at 7.5%. It sat 6.5% below its high of Aug 14, 2026 on Oct 28, 2026.

Questions people ask

Which returned more over the last year, ITOT or MDY?
In the year to Oct 28, 2026, with distributions reinvested, ITOT returned +13.4% and MDY +12.8%.
Which is cheaper, ITOT or MDY?
ITOT is cheaper, by 0.20 percentage points a year. That is about $20 on $10,000 held for a year. Fees come from each fund's prospectus.
How much do ITOT and MDY overlap with the S&P 500?
By their latest filed holdings, 88% of ITOT and 0% of MDY by weight is stocks the S&P 500 already holds.
Other comparisons
ITOT vs VXFITOT vs VOFTGS vs ITOTITOT vs MOATMDY vs VIGMDY vs SCHXMDY vs SPYMIWB vs MDY
Where to next
ITOT on its own →MDY on its own →Hold both: look the portfolio through →Rankings →ITOT dividend history →ITOT holdings →MDY dividend history →MDY holdings →Standards and sources →
Sources and dates
ITOT filings on SEC EDGAR ↗
ITOT prospectus with the expense ratio (SEC) ↗
iShares page for ITOT ↗
MDY filings on SEC EDGAR ↗
State Street website ↗

Links are sources, not endorsements. 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.

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ETFIQ, ITOT against MDY, data as of Oct 28, 2026. https://etfiq.com/compare/any/itot-vs-mdy

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