RBLY vs. COSW

Last updated Apr 1, 2026

Compare and contrast key facts about YieldMax RBLX Option Income Strategy ETF (RBLY) and Roundhill COST WeeklyPay ETF (COSW).

RBLY and COSW are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. RBLY is an actively managed fund by YieldMax. It was launched on Jul 28, 2025. COSW is an actively managed fund by Roundhill. It was launched on Oct 23, 2025.

Performance

RBLY vs. COSW - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in YieldMax RBLX Option Income Strategy ETF (RBLY) and Roundhill COST WeeklyPay ETF (COSW). The values are adjusted to include any dividend payments, if applicable.

RBLY vs. COSW - Yearly Performance Comparison

	2026 (YTD)	2025
RBLY YieldMax RBLX Option Income Strategy ETF	-27.82%	-31.68%
COSW Roundhill COST WeeklyPay ETF	17.20%	-10.71%

Returns By Period

In the year-to-date period, RBLY achieves a -27.82% return, which is significantly lower than COSW's 17.20% return.

RBLY

• 1D: 7.71%
• 1M: -16.03%
• YTD: -27.82%
• 6M: -53.35%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

COSW

• 1D: -0.54%
• 1M: -2.62%
• YTD: 17.20%
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

RBLY vs. COSW - Expense Ratio Comparison

Both RBLY and COSW have an expense ratio of 0.99%.

RBLY

YieldMax RBLX Option Income Strategy ETF

COSW

Roundhill COST WeeklyPay ETF

Return for Risk

RBLY vs. COSW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for YieldMax RBLX Option Income Strategy ETF (RBLY) and Roundhill COST WeeklyPay ETF (COSW). 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

	RBLY	COSW	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	-1.16	0.44	-1.60

Correlation

The correlation between RBLY and COSW is -0.25. This indicates that the assets' prices tend to move in opposite directions. Negative correlation can be particularly beneficial for diversification and risk management, as one asset may offset the losses of the other during market fluctuations.

Dividends

RBLY vs. COSW - Dividend Comparison

RBLY's dividend yield for the trailing twelve months is around 78.21%, more than COSW's 12.26% yield.

	TTM	2025
RBLY YieldMax RBLX Option Income Strategy ETF	78.21%	36.84%
COSW Roundhill COST WeeklyPay ETF	12.26%	4.96%

Drawdowns

RBLY vs. COSW - Drawdown Comparison

The maximum RBLY drawdown since its inception was -57.43%, which is greater than COSW's maximum drawdown of -12.17%. Use the drawdown chart below to compare losses from any high point for RBLY and COSW.

Drawdown Indicators

	RBLY	COSW	Difference
Max Drawdown Largest peak-to-trough decline	-57.43%	-12.17%	-45.26%
Current Drawdown Current decline from peak	-54.15%	-3.28%	-50.87%
Average Drawdown Average peak-to-trough decline	-26.16%	-4.05%	-22.11%

Volatility

Volatility by Period

	RBLY	COSW	Difference
Volatility (1Y) Calculated over the trailing 1-year period	51.69%	25.36%	+26.33%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	51.69%	25.36%	+26.33%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	51.69%	25.36%	+26.33%