ARMU vs VOO
T-REX 2X Long ARM Daily Target ETF vs Vanguard S&P 500 ETF
Which is better, ARMU or VOO?
VOO has been ahead.
VOO has a lower expense ratio. VOO led over 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 | ARMU | VOO |
|---|---|---|
| Expense Ratio | 1.05% | 0.03%Best |
| AUM | $2M | $997.4B |
| Dividend Yield | 0.00% | 1.04% |
| Holdings | 3 | 509 |
| Volatility (annualized) | 111.1% | 8.9%Best |
| Max Drawdown | -68.1% | -14.6%Best |
| $10,000 over 1 years | $6,451 | $11,682Best |
| Fund Family | REX Shares | Vanguard (US) |
| Category | Alternative | Equity |
| Style | - | Large Cap Blend |
| Inception | Mar 4, 2025 | Sep 7, 2010 |
Not shown on this pair: YTD Return, 1Y Return, 3Y Return (annualized), 5Y Return (annualized), Top 10 Weight.
The two price series end 189 days apart, so a return over any period would be measuring two different stretches of market. Those rows are withheld. ARMU has data through Mar 16, 2026 and VOO through Sep 21, 2026.
Volatility and max drawdown, and the $10,000 over 1 years row, are measured over the window both funds cover: Mar 4, 2025 to Mar 16, 2026 (1 years).
Risk: Volatility and Drawdowns
ARMU has been the more volatile fund, with annualized monthly volatility of 111.1% compared with 8.9% 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 -68.1% for ARMU and -14.6% for VOO. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.37. They move together some of the time, and apart the rest.
Fees and Cost Over Time
ARMU charges 1.05% per year while VOO charges 0.03%. On a $10,000 position that is $105 vs $3 annually, a gap of $102 per year that compounds over a long holding period. On income, ARMU currently yields 0.00% against 1.04% for VOO.
You are not choosing between two funds in isolation.
Whichever of ARMU and VOO 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, ARMU or VOO?
ARMU has an expense ratio of 1.05% while VOO charges 0.03%. VOO is the cheaper option, by $102 a year on a $10,000 investment.
Which is riskier, ARMU or VOO?
ARMU has been the more volatile fund at 111.1% annualized versus 8.9% for VOO. Worst drawdown: ARMU -68.1% vs VOO -14.6%.
Should I hold both ARMU and VOO?
ARMU and VOO have a monthly-return correlation of 0.37, 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, ARMU or VOO?
ARMU yields 0.00% while VOO yields 1.04%, so VOO currently pays the higher dividend yield.
Is VOO better than ARMU?
VOO has a lower expense ratio. VOO led over the full window. Which one suits a particular account depends on what it is for. This is information, not a recommendation.