ITOT vs IYY: holdings overlap, shared companies and scores
As of September 11, 2026, ITOT and IYY overlap 95.3% by weight. iShares Core S&P Total U.S. Stock Market ETF (ITOT): U.S. total market equities. iShares Dow Jones U.S. ETF (IYY): U.S. large- and mid-cap stocks.
Updated September 11, 2026
How much do ITOT and IYY overlap?
As of September 11, 2026, ITOT and IYY overlap 95.3% by weight.
95% of ITOT is already inside IYY.
100% of IYY is already inside ITOT.
ITOT holds 2,417 companies and IYY holds 963; 956 are in both.
Computed by ETF Copilot from both funds' holdings rather than quoted from a data provider, and rebuilt nightly.
How does ETF Copilot score ITOT and IYY?
As of September 11, 2026, ETF Copilot scores ITOT 5.3 out of 10 and IYY 5.2 out of 10.
They differ most on Quality: ITOT 8.0 and IYY 8.3.
The five factor scores behind them are set out below, 0–10 and higher is better, ranked against every US equity ETF we track.
| Factor | ITOT | IYY |
|---|---|---|
| Growth | 3.4 | 3.1 |
| Valuation | 2.8 | 2.6 |
| Risk | 4.8 | 4.9 |
| Quality | 8.0 | 8.3 |
| Return | 7.3 | 7.3 |
ITOT is the cheaper of the two at 0.03% a year
As of September 11, 2026, ITOT charges 0.03% a year, yields 1.11% and holds $97.1B in assets across 2417 positions.
As of September 11, 2026, IYY charges 0.20% a year, yields 1.11% and holds $3.1B in assets across 963 positions.
| Measure | ITOT | IYY |
|---|---|---|
| Expense ratio | 0.03% | 0.20% |
| Dividend yield | 1.11% | 1.11% |
| Assets under management | $97.1B | $3.1B |
| Holdings | 2417 | 963 |
Expense ratio, dividend yield and assets under management are reported by the fund and refreshed daily. Every other figure on this page is computed by ETF Copilot.
Where ITOT and IYY trade against their own history
ITOT trades at 24.8 times earnings, against its own median of 21.1, and is more expensive than 83% of its own 114 monthly readings since 2017.
IYY trades at 25.0 times earnings, against its own median of 21.3, and is more expensive than 84% of its own 114 monthly readings since 2017.
What moved ITOT and IYY this week
ITOT fell 1.2% in the week to September 11, 2026. The holdings that moved it most were Nvidia (−4.4%), Microsoft (−2.8%) and Eli Lilly (−3.8%); Advanced Micro Devices (+13.1%) pushed the other way.
IYY fell 1.3% in the week to September 11, 2026. The holdings that moved it most were Nvidia (−4.4%), Microsoft (−2.8%) and Eli Lilly (−3.8%); Advanced Micro Devices (+13.1%) pushed the other way.
What do ITOT and IYY each hold?
What's inside ITOT: Tech 43%, Magnificent 7 30%.
34% of ITOT is its ten largest holdings.
What's inside IYY: Tech 45%, Magnificent 7 32%.
36% of IYY is its ten largest holdings.
Compare with similar funds
Cite this
ETF Copilot, “ITOT vs IYY holdings overlap and scores”, as of September 11, 2026.
https://etf-copilot.com/compare/itot-vs-iyy
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