VOO vs WEEK
Vanguard S&P 500 ETF vs Roundhill Weekly T-Bill ETF
Which is better, VOO or WEEK?
VOO has been ahead.
VOO has a lower expense ratio. VOO led over 1Y and the full window.
MarketXLS is not an investment adviser. This comparison is generated automatically from market data and is for information only. A Best mark means the better reading on that one measure, not a recommendation to buy.
Side-by-Side Comparison
| Metric | VOO | WEEK |
|---|---|---|
| Expense Ratio | 0.03%Best | 0.19% |
| AUM | $997.4B | $183M |
| Dividend Yield | 1.04% | 3.63% |
| Holdings | 509 | 15 |
| YTD Return | +12.25%Best | +0.89% |
| 1Y Return | +17.03%Best | +2.01% |
| 3Y Return (annualized) | +21.25% | - |
| 5Y Return (annualized) | +13.08% | - |
| Volatility (annualized) | 12.1% | 0.8%Best |
| Max Drawdown | -13.6% | -0.2%Best |
| $10,000 over 1.5 years | $13,467Best | $10,537 |
| Fund Family | Vanguard (US) | Roundhill Investments |
| Category | Equity | Fixed Income |
| Style | Large Cap Blend | - |
| Inception | Sep 7, 2010 | Mar 6, 2025 |
Not shown on this pair: Top 10 Weight.
Volatility and max drawdown, and the $10,000 over 1.5 years row, are measured over the window both funds cover: Mar 6, 2025 to Sep 17, 2026 (1.5 years).
VOO vs WEEK growth
Month-end closes. Both lines start at 0% in the first month shown, so the gap between them is the difference in growth across that window. The full view covers the 1.5 years both funds cover.
VOO vs WEEK Performance
Vanguard S&P 500 ETF (VOO) is an ETF from Vanguard (US) and Roundhill Weekly T-Bill ETF (WEEK) is an ETF from Roundhill Investments. Over the past year VOO returned +17.03% while WEEK returned +2.01%. Year to date, VOO is up 12.25% versus a gain of 0.89% for WEEK.
Past performance does not guarantee future results.
Risk: Volatility and Drawdowns
VOO has been the more volatile fund, with annualized monthly volatility of 12.1% 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 -13.6% for VOO and -0.2% for WEEK. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.02. They move largely independently of each other.
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 1.04% against 3.63% for WEEK.
Holdings Overlap
We hold position weights for 494 holdings in VOO and 1 in WEEK, totalling 99.5% and 0.0% of the two funds. The two books name no position in common, so there is no overlap percentage to show.
0 positions in common, counted across the 494 positions we hold weights for in VOO and 1 in WEEK, against full books of 509 and 15.
You are not choosing between two funds in isolation.
Whichever of VOO and WEEK you pick has to sit alongside everything else you own. Add the rest and see what the combination actually holds.
Free for up to 10 holdings. No account needed.
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, by $16 a year on a $10,000 investment.
Which performed better, VOO or WEEK?
Over the past year VOO returned +17.03% vs +2.01% for WEEK, so VOO leads on 1-year performance. Over the longest common window we track (2 years), VOO annualized +21.95% vs +3.55% for WEEK. Past performance does not guarantee future results. This is information, not a recommendation.
Which is riskier, VOO or WEEK?
VOO has been the more volatile fund at 12.1% annualized versus 0.8% for WEEK. Worst drawdown: VOO -13.6% vs WEEK -0.2%.
Should I hold both VOO and WEEK?
VOO and WEEK have a monthly-return correlation of 0.02, so their returns are far enough apart for the mix to behave differently from either one alone. This is information, not a recommendation.
Which pays a higher dividend, VOO or WEEK?
VOO yields 1.04% while WEEK yields 3.63%, so WEEK currently pays the higher dividend yield.
Is WEEK better than VOO?
VOO has a lower expense ratio. VOO led over 1Y and the full window. Which one suits a particular account depends on what it is for. This is information, not a recommendation.