COII vs IVV
REX COIN Growth & Income ETF vs iShares Core S&P 500 ETF
Which is better, COII or IVV?
Option Writing against Large Cap Blend.
IVV has a lower expense ratio. IVV 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 | COII | IVV |
|---|---|---|
| Expense Ratio | 1.56% | 0.03%Best |
| AUM | $2M | $876.4B |
| Dividend Yield | 78.01% | 1.06% |
| Holdings | 6 | 508 |
| Volatility (annualized) | 42.5% | 13.6%Best |
| Max Drawdown | -72.4% | -8.9%Best |
| $10,000 over 1 years | $4,396 | $12,488Best |
| Fund Family | REX Shares | iShares by BlackRock (US) |
| Category | Alternative | Equity |
| Style | Option Writing | Large Cap Blend |
| Inception | Jun 4, 2025 | May 15, 2000 |
Not shown on this pair: YTD Return, 1Y Return, 3Y Return (annualized), 5Y Return (annualized), Top 10 Weight.
The two price series end 94 days apart, so a return over any period would be measuring two different stretches of market. Those rows are withheld. COII has data through Jun 9, 2026 and IVV through Sep 11, 2026.
Volatility and max drawdown, and the $10,000 over 1 years row, are measured over the window both funds cover: Jun 4, 2025 to Jun 9, 2026 (1 years).
Risk: Volatility and Drawdowns
COII has been the more volatile fund, with annualized monthly volatility of 42.5% compared with 13.6% for IVV. 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 -72.4% for COII and -8.9% for IVV. Drawdown depth is what each fund did in the worst stretch of the window measured above.
The two funds' monthly returns correlate at 0.49. They move together some of the time, and apart the rest.
Fees and Cost Over Time
COII charges 1.56% per year while IVV charges 0.03%. On a $10,000 position that is $156 vs $3 annually, a gap of $153 per year that compounds over a long holding period. On income, COII currently yields 78.01% against 1.06% for IVV.
Holdings Overlap
We hold position weights for 1 holding in COII and 505 in IVV, totalling 3.4% and 100.0% of the two funds. The two books name no position in common, so there is no overlap percentage to show.
The two holdings books were reported 187 days apart, COII as of Jan 30, 2026 and IVV as of Aug 5, 2026, so some of the difference between them is the time between the two reports rather than the funds.
0 positions in common, counted across the 1 positions we hold weights for in COII and 505 in IVV, against full books of 6 and 508.
You are not choosing between two funds in isolation.
Whichever of COII and IVV 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, COII or IVV?
COII has an expense ratio of 1.56% while IVV charges 0.03%. IVV is the cheaper option, by $153 a year on a $10,000 investment.
Which is riskier, COII or IVV?
COII has been the more volatile fund at 42.5% annualized versus 13.6% for IVV. Worst drawdown: COII -72.4% vs IVV -8.9%.
Should I hold both COII and IVV?
COII and IVV have a monthly-return correlation of 0.49, 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, COII or IVV?
COII yields 78.01% while IVV yields 1.06%, so COII currently pays the higher dividend yield.
Is IVV better than COII?
IVV has a lower expense ratio. IVV led over the full window. Which one suits a particular account depends on what it is for. This is information, not a recommendation.