iShares MSCI USA Size Factor ETF (SIZE) is a momentum-factor ETF. As of October 9, 2026, ETF Copilot scores SIZE 5.0 out of 10 — highest on Risk (7.1), lowest on Quality (3.8). It trades at 21.4 times earnings, against its own median of 20.3. Its ten largest holdings are 4% of the fund.
What stands out in SIZE's data
US companies of large and mid size, reweighted toward the smaller ones in the group.
Pays a richer price for each dollar of earnings than most peers — the premium cuts into future returns.
Its trailing EBITDA multiple of 15.2x sits above both the category median of 14.3x and its own historical median of 13.4x. Holdings 518.
Can serve as US exposure that leans toward smaller companies versus market-cap weighting.
Why did SIZE move this week? It rose 1.6% in the week to October 9, 2026 — PTC and Okta drove it
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.
How is SIZE rated? ETF Copilot scores iShares MSCI USA Size Factor ETF (SIZE) 5.0 out of 10
As of October 9, 2026, ETF Copilot scores iShares MSCI USA Size Factor ETF (SIZE) 5.0 out of 10 overall.
ETF Copilot scores (0–10 scale, higher is better):
- Overall: 5.0 / 10
- Growth: 4.6 / 10
- Value: 5.0 / 10
- Risk: 7.1 / 10
- Quality: 3.8 / 10
- Return: 5.0 / 10
Is SIZE expensive right now? It trades at 21.4 times earnings, against its own median of 20.3
As of October 9, 2026, SIZE is more expensive than 64% of its own 115 monthly readings since 2017 — 74 of those months were cheaper than today.
Trailing twelve-month, computed by ETF Copilot from the fund's holdings rather than quoted from a data provider, and rebuilt nightly.
What's inside SIZE? 21% Tech
What's inside SIZE: Size (Large 66%, Mid 34%, Small 0%); Geography (International 6%, US 94%); Tech 21.2%; Magnificent 7 1.2%; AI 4.8%; Semiconductors 4.3%; Memory 2.8%.
What are SIZE's top holdings? The ten largest are 4% of the fund
Okta, Atlassian, Dell Technologies, Hewlett Packard Enterprise, Natera, Everpure, Snowflake, NetApp, Illumina and Sharkninja are SIZE's largest holdings, in that order.
Less concentrated than 98% of Momentum ETFs.
Half of SIZE's weight sits in its 215 largest positions, and once those weights are taken into account it behaves like 485 equally weighted holdings.
What is SIZE's expense ratio? 0.15% a year
As of October 9, 2026, SIZE charges 0.15% a year, yields 1.39% and holds $424M in assets across 518 positions.
| Measure | SIZE |
|---|---|
| Expense ratio | 0.15% |
| Dividend yield | 1.39% |
| Assets under management | $424M |
| Holdings | 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.
Cite this
ETF Copilot, “iShares MSCI USA Size Factor ETF (SIZE) scores and holdings analysis”, as of October 9, 2026.
https://etf-copilot.com/etf/size
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