COII vs. ESK

Last updated Jun 5, 2026

COII (REX COIN Growth & Income ETF) and ESK (REX-Osprey ETH + Staking ETF) are both exchange-traded funds - COII is a Derivative Income fund actively managed by REX Shares, while ESK is a Cryptocurrency fund actively managed by REX Shares. Both are actively managed. A 0.78 correlation means they provide meaningful diversification when combined. COII charges 0.99%/yr vs 0.75%/yr for ESK.

Performance

COII vs. ESK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in REX COIN Growth & Income ETF (COII) and REX-Osprey ETH + Staking ETF (ESK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, COII achieves a -37.40% return, which is significantly higher than ESK's -40.40% return.

COII

• 1D: 0.63%
• 1M: -17.30%
• YTD: -37.40%
• 6M: -48.49%
• 1Y: -53.61%
• 3Y*: —
• 5Y*: —
• 10Y*: —

ESK

• 1D: -1.93%
• 1M: -26.08%
• YTD: -40.40%
• 6M: -43.62%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

COII vs. ESK - Yearly Performance Comparison

	2026 (YTD)	2025
COII REX COIN Growth & Income ETF	-37.40%	-30.97%
ESK REX-Osprey ETH + Staking ETF	-40.40%	-23.15%

Correlation

The correlation between COII and ESK is 0.78, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Sep 26, 2025	0.78

Return for Risk

COII vs. ESK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for REX COIN Growth & Income ETF (COII) and REX-Osprey ETH + Staking ETF (ESK). 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.

Sharpe Ratios by Period

	COII	ESK	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	-0.79	-1.01	+0.22

Drawdowns

COII vs. ESK - Drawdown Comparison

The maximum COII drawdown since its inception was -72.22%, which is greater than ESK's maximum drawdown of -61.89%. Use the drawdown chart below to compare losses from any high point for COII and ESK.

Drawdown Indicators

	COII	ESK	Difference
Max Drawdown Largest peak-to-trough decline	-72.22%	-61.89%	-10.33%
Max Drawdown (1Y) Largest decline over 1 year	-72.22%	—	—
Current Drawdown Current decline from peak	-68.84%	-61.89%	-6.95%
Average Drawdown Average peak-to-trough decline	-39.23%	-40.31%	+1.08%

Volatility

Volatility by Period

	COII	ESK	Difference
Volatility (1Y) Calculated over the trailing 1-year period	68.35%	67.08%	+1.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	68.35%	67.08%	+1.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	68.35%	67.08%	+1.27%

COII vs. ESK - Expense Ratio Comparison

COII has a 0.99% expense ratio, which is higher than ESK's 0.75% expense ratio.

Dividends

COII vs. ESK - Dividend Comparison

COII's dividend yield for the trailing twelve months is around 91.86%, more than ESK's 0.99% yield.

Position	TTM	2025
COII REX COIN Growth & Income ETF	91.86%	41.52%
ESK REX-Osprey ETH + Staking ETF	0.99%	0.30%

Frequently Asked Questions

Can I hold both COII and ESK in my portfolio?

COII and ESK have a correlation of 0.78, 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 ESK?

On fees, ESK is cheaper at 0.75% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, COII or ESK?

ESK is cheaper with a 0.75% expense ratio, compared with 0.99% for COII.

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

COII has the higher dividend yield at 91.86%, compared with 0.99% for ESK.

What is the main difference between COII and ESK?

COII is categorized as Derivative Income, while ESK is Cryptocurrency. Their fees differ too: 0.99% for COII and 0.75% for ESK.