COIW vs. BUYW

Last updated Jun 26, 2026

COIW (COIN WeeklyPay™ ETF) and BUYW (Main Buywrite ETF) are both Derivative Income funds. Both are actively managed. Over the past year, COIW returned -69.57% vs 8.84% for BUYW. At a 0.41 correlation, their price movements are largely independent. COIW charges 0.99%/yr vs 1.29%/yr for BUYW.

Performance

COIW vs. BUYW - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in COIN WeeklyPay™ ETF (COIW) and Main Buywrite ETF (BUYW). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, COIW achieves a -44.80% return, which is significantly lower than BUYW's 3.48% return.

COIW

• 1D: -6.25%
• 1M: -25.28%
• YTD: -44.80%
• 6M: -48.64%
• 1Y: -69.57%
• 3Y*: —
• 5Y*: —
• 10Y*: —

BUYW

• 1D: 0.36%
• 1M: 0.09%
• YTD: 3.48%
• 6M: 3.41%
• 1Y: 8.84%
• 3Y*: 8.72%
• 5Y*: —
• 10Y*: —

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

COIW vs. BUYW - Yearly Performance Comparison

	2026 (YTD)	2025
COIW COIN WeeklyPay™ ETF	-44.80%	-25.92%
BUYW Main Buywrite ETF	3.48%	7.08%

Correlation

The correlation between COIW and BUYW is 0.33, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.33
Correlation (All Time) Calculated using the full available price history since Feb 19, 2025	0.41

Return for Risk

COIW vs. BUYW — Risk / Return Rank

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

COIW

COIW Risk / Return Rank: 2
COIW Sharpe Ratio Rank: 3
COIW Sortino Ratio Rank: 2
COIW Omega Ratio Rank: 2
COIW Calmar Ratio Rank: 1
COIW Martin Ratio Rank: 2

BUYW

BUYW Risk / Return Rank: 74
BUYW Sharpe Ratio Rank: 64
BUYW Sortino Ratio Rank: 70
BUYW Omega Ratio Rank: 70
BUYW Calmar Ratio Rank: 76
BUYW Martin Ratio Rank: 91

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.

COIW vs. BUYW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for COIN WeeklyPay™ ETF (COIW) and Main Buywrite ETF (BUYW). 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.

	COIW	BUYW	Difference
Sharpe ratio: Return per unit of total volatility	-0.85	1.83	-2.68
Sortino ratio: Return per unit of downside risk	-1.46	2.75	-4.22
Omega ratio: Gain probability vs. loss probability	0.84	1.36	-0.52
Calmar ratio: Return relative to maximum drawdown	-0.93	3.43	-4.36
Martin ratio: Return relative to average drawdown	-1.40	18.26	-19.66

COIW vs. BUYW - Sharpe Ratio Comparison

The current COIW Sharpe Ratio is -0.85, which is lower than the BUYW Sharpe Ratio of 1.83. The chart below compares the historical Sharpe Ratios of COIW and BUYW, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

COIW vs. BUYW - Drawdown Comparison

The maximum COIW drawdown since its inception was -75.01%, which is greater than BUYW's maximum drawdown of -9.36%. Use the drawdown chart below to compare losses from any high point for COIW and BUYW.

Drawdown Indicators

	COIW	BUYW	Difference
Max Drawdown Largest peak-to-trough decline	-75.01%	-9.36%	-65.65%
Max Drawdown (1Y) Largest decline over 1 year	-75.01%	-2.59%	-72.42%
Max Drawdown (3Y) Largest decline over 3 years	—	-9.36%	—
Current Drawdown Current decline from peak	-75.01%	-0.26%	-74.75%
Average Drawdown Average peak-to-trough decline	-39.52%	-0.60%	-38.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	49.83%	0.49%	+49.34%

Volatility

COIW vs. BUYW - Volatility Comparison

COIN WeeklyPay™ ETF (COIW) has a higher volatility of 23.13% compared to Main Buywrite ETF (BUYW) at 1.41%. This indicates that COIW's price experiences larger fluctuations and is considered to be riskier than BUYW based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	COIW	BUYW	Difference
Volatility (1M) Calculated over the trailing 1-month period	23.13%	1.41%	+21.72%
Volatility (6M) Calculated over the trailing 6-month period	63.51%	3.90%	+59.61%
Volatility (1Y) Calculated over the trailing 1-year period	82.07%	4.84%	+77.23%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	90.41%	8.43%	+81.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	90.41%	8.43%	+81.98%

COIW vs. BUYW - Expense Ratio Comparison

COIW has a 0.99% expense ratio, which is lower than BUYW's 1.29% expense ratio.

Dividends

COIW vs. BUYW - Dividend Comparison

COIW's dividend yield for the trailing twelve months is around 270.96%, more than BUYW's 5.95% yield.

Position	TTM	2025	2024	2023	2022
BUYW Main Buywrite ETF	5.95%	5.89%	5.93%	5.95%	0.50%
COIW COIN WeeklyPay™ ETF	270.96%	120.37%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both COIW and BUYW in my portfolio?

COIW and BUYW have a correlation of 0.33, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, COIW or BUYW?

COIW has higher volatility (23.13%) compared to BUYW (1.41%). In terms of maximum drawdown, COIW dropped -75.01% vs BUYW's -9.36%.

Which ETF is better, COIW or BUYW?

On 1-year performance, BUYW leads with 8.84% vs -69.57% for COIW. On fees, COIW is cheaper at 0.99% per year. On volatility, BUYW has been the lower-risk option at 1.41%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, COIW or BUYW?

Over the 1-year period, BUYW has performed better with a 8.84% return vs -69.57%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, COIW or BUYW?

COIW is cheaper with a 0.99% expense ratio, compared with 1.29% for BUYW.

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

COIW has the higher dividend yield at 270.96%, compared with 5.95% for BUYW.

What is the main difference between COIW and BUYW?

They also come from different issuers: Roundhill and Main Funds. Their fees differ too: 0.99% for COIW and 1.29% for BUYW.

Which has better risk-adjusted returns?

BUYW currently has the higher Sharpe Ratio (1.83 vs -0.85), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.