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SIZEvsVOETF Comparison
iShares MSCI USA Size Factor ETF (SIZE) belongs to the US Large Cap segment. Vanguard Mid-Cap ETF (VO) is part of the US Mid Cap segment. SIZE's top 3 sector exposures are Information Technology, Industrials and Financials. In contrast, VO's top sector exposures are Industrials, Information Technology and Financials. SIZE is more expensive with a Total Expense Ratio (TER) of 0.15%, versus 0.03% for VO. SIZE is down -0.96% year-to-date (YTD) with -$8M in YTD flows. VO performs better with -0.43% YTD performance, and +$1.99B in YTD flows. Run a side-by-side ETF comparison of SIZE and VO below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
SIZE vs VO performance and flow charts
Performance
Cumulative Flows
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | SIZE VO | -4.68%-4.38% | -1.59%-1.44% | -0.96%-0.43% | +14.72%+16.59% | +49.09%+49.77% | +41.47%+37.78% |
| Flows | SIZE VO | -$8M+$1.19B | +$8M+$2.35B | -$8M+$1.99B | +$37M+$10.56B | -$47M+$19.42B | -$700M+$29.12B |
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | SIZE VO | +12.40%+13.14% | +17.53%+17.68% | +14.75%+14.88% | +17.05%+17.56% |
| Max drawdown | SIZE VO | -5.51%-5.90% | -13.31%-13.44% | -18.57%-18.93% | -24.05%-27.54% |
| Max drawdown duration | SIZE VO | 15d15d | 46d46d | 219d211d | 820d972d |
SIZE | VO | |
Last sale 3/13/2026 at 1:30 PM | $160.04 | $289.00 |
| Previous close 03/12/2026 | $160.10 | $289.14 |
| Consolidated volume 03/12/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Create an account to view replication metrics
SIZE | VO | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
SIZE | VO | |
|---|---|---|
| Last price | $160.04 | $289.00 |
| 1D performance | -0.04% | -0.05% |
| AuM | $376.20 M | $92.28 B |
| E/R | 0.15% | 0.03% |
Countries
Sectors
Diversification
Total weight of top 15 holdings out of 15
Total weight of top 15 holdings out of 15
Top 15 holdings
How have the SIZE and VO ETFs performed in 2026?
As of March 13, 2026, SIZE is down -0.96% year-to-date (YTD), while VO has lost -0.43%. That puts VO better performer ahead so far this year.
Which ETF is attracting more investor money: SIZE or VO?
Year-to-date, the SIZE ETF saw -$8M in flows, compared to +$1.99B for VO.
Which ETF is more volatile: SIZE or VO?
Over the past year, SIZE had a volatility of 17.53%, while VO experienced 17.68%.
Which ETF is bigger: SIZE or VO?
As of March 13, 2026, SIZE holds $376.20 M in assets under management (AUM), while VO manages $92.28 B.
What sectors do the SIZE and VO ETFs invest in?
SIZE leans toward sectors like Information Technology, Industrials and Financials. Meanwhile, VO focuses on Industrials, Information Technology and Financials.
What are the top holdings of the SIZE ETF and VO ETF?
SIZE top holdings include US7731211089, ECHOSTAR and WESTERN DIGITAL. VO holds in its top three: NEWMONT CORP, CONSTELLATION ENERGY CORP and SEAGATE TECHNOLOGY HOLDINGS PLC.
Which ETF is more diversified: SIZE or VO?
SIZE holds 544 securities with 4.05% of its assets in the top 15. VO has 287 securities and a top 15 weight of 13.18%.
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