SIZE vs VOO
SIZE vs VOO
iShares MSCI USA Size Factor ETF vs Vanguard S&P 500 ETF
Quick Verdict
VOO has a lower expense ratio. VOO delivered stronger 1-year returns. SIZE offers more diversification with 507 holdings.
Side-by-Side Comparison
| Metric | SIZE | VOO | Winner |
|---|---|---|---|
| Expense Ratio | 0.15% | 0.03% | |
| AUM | $430M | $979.0B | |
| Dividend Yield | 1.37% | 1.09% | |
| Holdings | 533 | 509 | |
| YTD Return | +11.81% | +11.51% | |
| 1Y Return | +17.23% | +21.46% | |
| 3Y Return (annualized) | +14.87% | +20.86% | |
| 5Y Return (annualized) | +8.15% | +13.01% | |
| Volatility (annualized) | 15.3% | 14.1% | |
| Max Drawdown | -39.1% | -34.3% | |
| Fund Family | iShares by BlackRock (US) | Vanguard (US) | |
| Category | Equity | Equity | |
| Inception | Apr 16, 2013 | Sep 7, 2010 |
SIZE vs VOO Performance
iShares MSCI USA Size Factor ETF (SIZE) is a ETF from iShares by BlackRock (US) and Vanguard S&P 500 ETF (VOO) is a ETF from Vanguard (US). Over the past year SIZE returned +17.23% while VOO returned +21.46%. Year to date, SIZE is up 11.81% versus a gain of 11.51% for VOO.
Over three years, SIZE compounded at +14.87% per year against +20.86% for VOO; over five years the annualized figures are +8.15% and +13.01% respectively. Across the full 13-year window we track, VOO has the edge at +13.44% annualized vs +10.80%. Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
SIZE has been the more volatile fund, with annualized monthly volatility of 15.3% compared with 14.1% for VOO. Lower volatility generally means a smoother ride, though it often comes with lower long-run returns.
The deepest peak-to-trough decline in our data was -39.1% for SIZE and -34.3% for VOO. Drawdown depth is worth weighing if you expect to sell during market stress rather than ride it out.
The two funds' monthly returns correlate at 0.95. They move almost in lockstep, so holding both mostly duplicates the same exposure.
Fees and Cost Over Time
SIZE charges 0.15% per year while VOO charges 0.03%. On a $10,000 position that is $15 vs $3 annually, a gap of $12 per year that compounds over a long holding period. On income, SIZE currently yields 1.37% against 1.09% for VOO.
Holdings Overlap
SIZE and VOO share 421 holdings out of 591 unique holdings combined, representing a 38.8% weight overlap.
Moderate overlap means holding both could provide meaningful diversification benefits.
Top Shared Holdings
| Stock | Weight in SIZE | Weight in VOO | Difference |
|---|---|---|---|
| NVDA | 0.13% | 7.51% | 7.38% |
| AAPL | 0.16% | 6.59% | 6.43% |
| AMZN | 0.14% | 3.62% | 3.48% |
| GOOGL | Pro | Pro | Pro |
| AVGO | Pro | Pro | Pro |
| GOOG | Pro | Pro | Pro |
| MU | Pro | Pro | Pro |
| META | Pro | Pro | Pro |
| TSLA | Pro | Pro | Pro |
| AMD | Pro | Pro | Pro |
See all 10 holdings SIZE shares with VOO Exact weights in each fund and the difference, for every overlapping position. Get FundXLS Pro: $29/moFirst 500 subscribers, then $49/mo. Cancel anytime. | |||
Frequently Asked Questions
Which is cheaper, SIZE or VOO?
SIZE has an expense ratio of 0.15% while VOO charges 0.03%. VOO is the cheaper option. On a $10,000 investment, that is $12 per year of difference.
Which performed better, SIZE or VOO?
Over the past year SIZE returned +17.23% vs +21.46% for VOO, so VOO leads on 1-year performance. Over the longest common window we track (13 years), SIZE annualized +10.80% vs +13.44% for VOO. Past performance does not guarantee future results.
Which is riskier, SIZE or VOO?
SIZE has been the more volatile fund at 15.3% annualized versus 14.1% for VOO. Worst drawdown: SIZE -39.1% vs VOO -34.3%.
Should I hold both SIZE and VOO?
SIZE and VOO have a monthly-return correlation of 0.95, so they move almost identically. Holding both adds little diversification - most investors pick one, usually on fees or the specific index tracked.
What is the holdings overlap between SIZE and VOO?
SIZE and VOO share 421 common holdings with a 38.8% weight overlap. Combined, they hold 591 unique securities.
Which pays a higher dividend, SIZE or VOO?
SIZE yields 1.37% while VOO yields 1.09%, so SIZE currently pays the higher dividend yield.
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