BUYW vs. CWII

Last updated Jun 24, 2026

BUYW (Main Buywrite ETF) and CWII (REX CRWV Growth & Income ETF) are both Derivative Income funds. Both are actively managed. At a 0.17 correlation, their price movements are largely independent. BUYW charges 1.29%/yr vs 1.03%/yr for CWII.

Performance

BUYW vs. CWII - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Main Buywrite ETF (BUYW) and REX CRWV Growth & Income ETF (CWII). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BUYW achieves a 3.75% return, which is significantly lower than CWII's 13,199.78% return.

BUYW

• 1D: 0.35%
• 1M: 0.35%
• YTD: 3.75%
• 6M: 4.11%
• 1Y: 9.91%
• 3Y*: 8.68%
• 5Y*: —
• 10Y*: —

CWII

• 1D: 0.00%
• 1M: 10,273.16%
• YTD: 13,199.78%
• 6M: 11,946.90%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

BUYW vs. CWII - Yearly Performance Comparison

	2026 (YTD)	2025
BUYW Main Buywrite ETF	3.75%	1.79%
CWII REX CRWV Growth & Income ETF	13,199.78%	-45.06%

Correlation

The correlation between BUYW and CWII is 0.17, 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 Nov 4, 2025	0.17

Return for Risk

BUYW vs. CWII — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

BUYW

BUYW Risk / Return Rank: 77
BUYW Sharpe Ratio Rank: 66
BUYW Sortino Ratio Rank: 74
BUYW Omega Ratio Rank: 74
BUYW Calmar Ratio Rank: 78
BUYW Martin Ratio Rank: 91

CWII

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

BUYW vs. CWII - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Main Buywrite ETF (BUYW) and REX CRWV Growth & Income ETF (CWII). 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.

	BUYW	CWII	Difference
Sharpe ratio: Return per unit of total volatility	2.06	—	—
Sortino ratio: Return per unit of downside risk	3.13	—	—
Omega ratio: Gain probability vs. loss probability	1.41	—	—
Calmar ratio: Return relative to maximum drawdown	3.84	—	—
Martin ratio: Return relative to average drawdown	20.54	—	—

Drawdowns

BUYW vs. CWII - Drawdown Comparison

The maximum BUYW drawdown since its inception was -9.36%, smaller than the maximum CWII drawdown of -51.04%. Use the drawdown chart below to compare losses from any high point for BUYW and CWII.

Drawdown Indicators

	BUYW	CWII	Difference
Max Drawdown Largest peak-to-trough decline	-9.36%	-51.04%	+41.68%
Max Drawdown (1Y) Largest decline over 1 year	-2.59%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-9.36%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.60%	-33.26%	+32.66%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.48%	—	—

Volatility

Volatility by Period

	BUYW	CWII	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.21%	—	—
Volatility (6M) Calculated over the trailing 6-month period	3.84%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	4.84%	13,701.30%	-13,696.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	8.43%	13,701.30%	-13,692.87%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	8.43%	13,701.30%	-13,692.87%

BUYW vs. CWII - Expense Ratio Comparison

BUYW has a 1.29% expense ratio, which is higher than CWII's 1.03% expense ratio.

Dividends

BUYW vs. CWII - Dividend Comparison

BUYW's dividend yield for the trailing twelve months is around 5.89%, less than CWII's 123.26% yield.

Position	TTM	2025	2024	2023	2022
BUYW Main Buywrite ETF	5.89%	5.89%	5.93%	5.95%	0.50%
CWII REX CRWV Growth & Income ETF	123.26%	6.09%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BUYW and CWII in my portfolio?

BUYW and CWII have a correlation of 0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, BUYW or CWII?

On fees, CWII is cheaper at 1.03% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, BUYW or CWII?

CWII is cheaper with a 1.03% expense ratio, compared with 1.29% for BUYW.

Which ETF pays a higher dividend yield, BUYW or CWII?

CWII has the higher dividend yield at 123.26%, compared with 5.89% for BUYW.

What is the main difference between BUYW and CWII?

They also come from different issuers: Main Funds and REX Shares. Their fees differ too: 1.29% for BUYW and 1.03% for CWII.