ITOT vs MDYG: holdings overlap, shared companies and scores
As of September 11, 2026, ITOT and MDYG overlap 3.2% by weight. iShares Core S&P Total U.S. Stock Market ETF (ITOT): U.S. total market equities. State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG): U.S. mid-cap growth stocks.
Updated September 11, 2026
How much do ITOT and MDYG overlap?
As of September 11, 2026, ITOT and MDYG overlap 3.2% by weight.
3% of ITOT is already inside MDYG.
100% of MDYG is already inside ITOT.
ITOT holds 2,417 companies and MDYG holds 246; 246 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 MDYG?
As of September 11, 2026, ETF Copilot scores ITOT 5.3 out of 10 and MDYG 4.7 out of 10.
They differ most on Quality: ITOT 8.0 and MDYG 3.4.
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 | MDYG |
|---|---|---|
| Growth | 3.4 | 7.3 |
| Valuation | 2.8 | 4.5 |
| Risk | 4.8 | 3.2 |
| Quality | 8.0 | 3.4 |
| Return | 7.3 | 4.2 |
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, MDYG charges 0.15% a year, yields 0.68% and holds $2.9B in assets across 246 positions.
| Measure | ITOT | MDYG |
|---|---|---|
| Expense ratio | 0.03% | 0.15% |
| Dividend yield | 1.11% | 0.68% |
| Assets under management | $97.1B | $2.9B |
| Holdings | 2417 | 246 |
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 MDYG 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.
MDYG trades at 25.4 times earnings, against its own median of 23.0, and is more expensive than 69% of its own 114 monthly readings since 2017.
What moved ITOT and MDYG 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.
MDYG fell 1.6% in the week to September 11, 2026. The holdings that moved it most were Guidewire Software (−30.5%), Twilio (−5.5%) and Technipfmc (−4.7%); Semtech (+23.5%) pushed the other way.
What do ITOT and MDYG each hold?
What's inside ITOT: Tech 43%, Magnificent 7 30%.
34% of ITOT is its ten largest holdings.
What's inside MDYG: Tech 22%, Semiconductors 5%.
15% of MDYG is its ten largest holdings.
Compare with similar funds
Cite this
ETF Copilot, “ITOT vs MDYG holdings overlap and scores”, as of September 11, 2026.
https://etf-copilot.com/compare/itot-vs-mdyg
- iShares Core S&P Total U.S. Stock Market ETF (ITOT)
- State Street SPDR S&P 400 Mid Cap Growth ETF (MDYG)
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