ACWI vs SIZE: holdings overlap, shared companies and scores
As of October 9, 2026, ACWI and SIZE overlap 33.0% by weight. iShares MSCI ACWI ETF (ACWI): Large and mid-cap stocks worldwide. iShares MSCI USA Size Factor ETF (SIZE): U.S. large and mid caps.
Updated October 9, 2026
Where ACWI and SIZE trade against their own history
ACWI trades at 21.0 times earnings, against its own median of 18.9, and is more expensive than 66% of its own 115 monthly readings since 2017.
SIZE trades at 21.4 times earnings, against its own median of 20.3, and is more expensive than 64% of its own 115 monthly readings since 2017.
What moved ACWI and SIZE this week
ACWI rose 0.5% in the week to October 9, 2026. The holdings that moved it most were Microsoft (+3.4%), Amazon.com (+4.3%) and Alphabet (+2.4%); Nvidia (−2.0%) pushed the other way.
SIZE rose 1.6% in the week to October 9, 2026. The holdings that moved it most were PTC (+35.0%), Okta (+9.8%) and Zscaler (+18.9%); Iren (−15.7%) pushed the other way.
What do ACWI and SIZE each hold?
What's inside ACWI: Tech 38%, Magnificent 7 22%.
26% of ACWI is its ten largest holdings.
What's inside SIZE: Tech 21%, AI 5%.
4% of SIZE is its ten largest holdings.
How much do ACWI and SIZE overlap? 33.0% by weight
As of October 9, 2026, ACWI and SIZE overlap 33.0% by weight.
65% of ACWI is already inside SIZE.
100% of SIZE is already inside ACWI.
ACWI holds 2,214 companies and SIZE holds 518; 517 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 ACWI and SIZE? 6.4 and 5.0 out of 10
As of October 9, 2026, ETF Copilot scores ACWI 6.4 out of 10 and SIZE 5.0 out of 10.
They differ most on Quality: ACWI 7.6 and SIZE 3.8.
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 | ACWI | SIZE |
|---|---|---|
| Growth | 7.5 | 4.6 |
| Value | 2.4 | 5.0 |
| Risk | 6.8 | 7.1 |
| Quality | 7.6 | 3.8 |
| Return | 6.9 | 5.0 |
SIZE is the cheaper of the two at 0.15% a year
As of October 9, 2026, ACWI charges 0.32% a year, yields 1.40% and holds $33.3B in assets across 2214 positions.
As of October 9, 2026, SIZE charges 0.15% a year, yields 1.39% and holds $424M in assets across 518 positions.
| Measure | ACWI | SIZE |
|---|---|---|
| Expense ratio | 0.32% | 0.15% |
| Dividend yield | 1.40% | 1.39% |
| Assets under management | $33.3B | $424M |
| Holdings | 2214 | 518 |
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.
Compare with similar funds
Cite this
ETF Copilot, “ACWI vs SIZE holdings overlap and scores”, as of October 9, 2026.
https://etf-copilot.com/compare/acwi-vs-size
ETF Copilot Pro unlocks ACWI vs SIZE prices and holdings.
Try Pro free →