COII vs. ARMW

Last updated Jul 16, 2026

COII (REX COIN Growth & Income ETF) and ARMW (Roundhill ARM WeeklyPay ETF) are both Derivative Income funds. Both are actively managed. At a 0.36 correlation, their price movements are largely independent. Both charge a 0.99% expense ratio.

Performance

COII vs. ARMW - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in REX COIN Growth & Income ETF (COII) and Roundhill ARM WeeklyPay ETF (ARMW). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, COII achieves a -40.76% return, which is significantly lower than ARMW's 182.49% return.

COII

• 1D: 0.00%
• 1M: 0.00%
• 6M: -47.26%
• YTD: -40.76%
• 1Y: -68.31%
• 3Y*: —
• 5Y*: —
• 10Y*: —

ARMW

• 1D: -1.09%
• 1M: -38.97%
• 6M: 199.70%
• YTD: 182.49%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

*Multi-year figures are annualized to reflect compound growth (CAGR)

COII vs. ARMW - Yearly Performance Comparison

	2026 (YTD)	2025
COII REX COIN Growth & Income ETF	-40.76%	-30.47%
ARMW Roundhill ARM WeeklyPay ETF	182.49%	-41.28%

Correlation

The correlation between COII and ARMW is 0.36, 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 Oct 23, 2025	0.36

Return for Risk

COII vs. ARMW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for REX COIN Growth & Income ETF (COII) and Roundhill ARM WeeklyPay ETF (ARMW). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	COII	ARMW	Difference
Sharpe ratio: Return per unit of total volatility	-0.98	—	—
Sortino ratio: Return per unit of downside risk	-1.62	—	—
Omega ratio: Gain probability vs. loss probability	0.80	—	—
Calmar ratio: Return relative to maximum drawdown	-0.90	—	—
Martin ratio: Return relative to average drawdown	-1.33	—	—

Drawdowns

COII vs. ARMW - Drawdown Comparison

The maximum COII drawdown since its inception was -72.22%, which is greater than ARMW's maximum drawdown of -48.47%. Use the drawdown chart below to compare losses from any high point for COII and ARMW.

Drawdown Indicators

	COII	ARMW	Difference
Max Drawdown Largest peak-to-trough decline	-72.22%	-48.47%	-23.75%
Max Drawdown (1Y) Largest decline over 1 year	-72.22%	—	—
Current Drawdown Current decline from peak	-70.51%	-43.15%	-27.36%
Average Drawdown Average peak-to-trough decline	-41.08%	-25.84%	-15.24%
Ulcer Index Depth and duration of drawdowns from previous peaks	48.77%	—	—

Volatility

Volatility by Period

	COII	ARMW	Difference
Volatility (1M) Calculated over the trailing 1-month period	14.58%	—	—
Volatility (6M) Calculated over the trailing 6-month period	51.81%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	66.59%	95.02%	-28.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	66.93%	95.02%	-28.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	66.93%	95.02%	-28.09%

COII vs. ARMW - Expense Ratio Comparison

Both COII and ARMW have an expense ratio of 0.99%.

Dividends

COII vs. ARMW - Dividend Comparison

COII has not paid dividends to shareholders, while ARMW's dividend yield for the trailing twelve months is around 46.80%.

Position	TTM	2025
ARMW Roundhill ARM WeeklyPay ETF	46.80%	16.38%
COII REX COIN Growth & Income ETF	75.93%	41.52%

Frequently Asked Questions

Can I hold both COII and ARMW in my portfolio?

COII and ARMW have a correlation of 0.36, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, COII or ARMW?

Both ETFs have the same 0.99% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, COII or ARMW?

COII and ARMW have the same expense ratio: 0.99% per year.

Which ETF pays a higher dividend yield, COII or ARMW?

COII has the higher dividend yield at 75.93%, compared with 46.80% for ARMW.

What is the main difference between COII and ARMW?

They also come from different issuers: REX Shares and Roundhill Investments.