COII vs. MRNY
COII (REX COIN Growth & Income ETF) and MRNY (YieldMax MRNA Option Income Strategy ETF) are both Derivative Income funds. Both are actively managed. At a 0.31 correlation, their price movements are largely independent. Both charge a 0.99% expense ratio.
Performance
COII vs. MRNY - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, COII achieves a -37.80% return, which is significantly lower than MRNY's 55.67% return.
COII
- 1D
- -7.35%
- 1M
- -19.57%
- YTD
- -37.80%
- 6M
- -48.84%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
MRNY
- 1D
- 2.69%
- 1M
- 7.98%
- YTD
- 55.67%
- 6M
- 64.78%
- 1Y
- 53.27%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
COII vs. MRNY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
COII REX COIN Growth & Income ETF | -37.80% | -25.89% |
MRNY YieldMax MRNA Option Income Strategy ETF | 55.67% | -1.54% |
Correlation
The correlation between COII and MRNY is 0.31, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since Jun 5, 2025 | 0.31 |
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
COII vs. MRNY — Risk / Return Rank
COII
MRNY
COII vs. MRNY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for REX COIN Growth & Income ETF (COII) and YieldMax MRNA Option Income Strategy ETF (MRNY). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
Loading charts...
Sharpe Ratios by Period
| COII | MRNY | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | — | 1.08 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.79 | -0.48 | -0.32 |
Drawdowns
COII vs. MRNY - Drawdown Comparison
The maximum COII drawdown since its inception was -72.22%, smaller than the maximum MRNY drawdown of -82.15%. Use the drawdown chart below to compare losses from any high point for COII and MRNY.
Loading charts...
Drawdown Indicators
| COII | MRNY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -72.22% | -82.15% | +9.93% |
Max Drawdown (1Y)Largest decline over 1 year | — | -31.53% | — |
Current DrawdownCurrent decline from peak | -69.04% | -67.23% | -1.81% |
Average DrawdownAverage peak-to-trough decline | -39.11% | -52.64% | +13.53% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 16.15% | — |
Volatility
COII vs. MRNY - Volatility Comparison
Loading charts...
Volatility by Period
| COII | MRNY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 13.53% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 37.11% | — |
Volatility (1Y)Calculated over the trailing 1-year period | 68.48% | 49.38% | +19.10% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 68.48% | 50.75% | +17.73% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 68.48% | 50.75% | +17.73% |
COII vs. MRNY - Expense Ratio Comparison
Both COII and MRNY have an expense ratio of 0.99%.
Dividends
COII vs. MRNY - Dividend Comparison
COII's dividend yield for the trailing twelve months is around 92.44%, less than MRNY's 100.06% yield.
| Position | TTM | 2025 | 2024 | 2023 |
|---|---|---|---|---|
COII REX COIN Growth & Income ETF | 92.44% | 41.52% | 0.00% | 0.00% |
MRNY YieldMax MRNA Option Income Strategy ETF | 100.06% | 145.98% | 178.49% | 1.75% |
Frequently Asked Questions
COII and MRNY have a correlation of 0.31, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
Both ETFs have the same 0.99% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.
COII and MRNY have the same expense ratio: 0.99% per year.
MRNY has the higher dividend yield at 100.06%, compared with 92.44% for COII.
They also come from different issuers: REX Shares and YieldMax.
Find the right allocation for COII and MRNY
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer