VOO vs WEEK
Vanguard S&P 500 ETF vs Roundhill Weekly T-Bill ETF
Quick Verdict
VOO has a lower expense ratio. VOO delivered stronger 1-year returns. VOO offers more diversification with 509 holdings.
Side-by-Side Comparison
| Metric | VOO | WEEK | Winner |
|---|---|---|---|
| Expense Ratio | 0.03% | 0.19% | |
| AUM | $997.4B | $184M | |
| Dividend Yield | 1.08% | 3.63% | |
| Holdings | 509 | 15 | |
| YTD Return | +13.49% | +0.93% | |
| 1Y Return | +20.64% | +2.28% | |
| 3Y Return (annualized) | +21.93% | - | |
| 5Y Return (annualized) | +12.95% | - | |
| Volatility (annualized) | 14.1% | 0.8% | |
| Max Drawdown | -34.3% | -0.2% | |
| Fund Family | Vanguard (US) | Roundhill Investments | |
| Category | Equity | Fixed Income | |
| Inception | Sep 7, 2010 | Mar 6, 2025 |
VOO vs WEEK Performance
Vanguard S&P 500 ETF (VOO) is a ETF from Vanguard (US) and Roundhill Weekly T-Bill ETF (WEEK) is a ETF from Roundhill Investments. Over the past year VOO returned +20.64% while WEEK returned +2.28%. Year to date, VOO is up 13.49% versus a gain of 0.93% for WEEK.
Risk: Volatility and Drawdowns
VOO has been the more volatile fund, with annualized monthly volatility of 14.1% compared with 0.8% for WEEK. 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 -34.3% for VOO and -0.2% for WEEK. 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 -0.05. They move independently enough that combining them can meaningfully diversify a portfolio.
Fees and Cost Over Time
VOO charges 0.03% per year while WEEK charges 0.19%. On a $10,000 position that is $3 vs $19 annually, a gap of $16 per year that compounds over a long holding period. On income, VOO currently yields 1.08% against 3.63% for WEEK.
Holdings Overlap
VOO and WEEK share 0 holdings out of 506 unique holdings combined, representing a 0.0% weight overlap.
Moderate overlap means holding both could provide meaningful diversification benefits.
Frequently Asked Questions
Which is cheaper, VOO or WEEK?
VOO has an expense ratio of 0.03% while WEEK charges 0.19%. VOO is the cheaper option. On a $10,000 investment, that is $16 per year of difference.
Which performed better, VOO or WEEK?
Over the past year VOO returned +20.64% vs +2.28% for WEEK, so VOO leads on 1-year performance. Over the longest common window we track (2 years), VOO annualized +13.51% vs +3.72% for WEEK. Past performance does not guarantee future results.
Which is riskier, VOO or WEEK?
VOO has been the more volatile fund at 14.1% annualized versus 0.8% for WEEK. Worst drawdown: VOO -34.3% vs WEEK -0.2%.
Should I hold both VOO and WEEK?
VOO and WEEK have a monthly-return correlation of -0.05, so combining them can provide real diversification depending on your allocation goals.
What is the holdings overlap between VOO and WEEK?
VOO and WEEK share 0 common holdings with a 0.0% weight overlap. Combined, they hold 506 unique securities.
Which pays a higher dividend, VOO or WEEK?
VOO yields 1.08% while WEEK yields 3.63%, so WEEK currently pays the higher dividend yield.
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