COSW vs. ARMW

Last updated Jun 4, 2026

COSW (Roundhill COST WeeklyPay ETF) and ARMW (Roundhill ARM WeeklyPay ETF) are both Derivative Income funds. Both are actively managed. At a correlation of -0.14, they often move in opposite directions. Both charge a 0.99% expense ratio.

Performance

COSW vs. ARMW - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Roundhill COST WeeklyPay ETF (COSW) 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, COSW achieves a 12.13% return, which is significantly lower than ARMW's 363.23% return.

COSW

• 1D: 0.92%
• 1M: -6.40%
• YTD: 12.13%
• 6M: 2.92%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

ARMW

• 1D: 3.44%
• 1M: 128.75%
• YTD: 363.23%
• 6M: 245.13%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

COSW vs. ARMW - Yearly Performance Comparison

	2026 (YTD)	2025
COSW Roundhill COST WeeklyPay ETF	12.13%	-10.71%
ARMW Roundhill ARM WeeklyPay ETF	363.23%	-40.49%

Correlation

The correlation between COSW and ARMW is -0.14, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 24, 2025	-0.14

COSW vs. ARMW - Sectors Allocation Comparison

Sectors	COSW	ARMW
Consumer Defensive	7.9%	-
Basic Materials	-	-
Communication Services	-	-
Consumer Cyclical	-	-
Energy	-	-
Financial Services	-	-
Healthcare	-	-
Industrials	-	-
Real Estate	-	-
Technology	-	36.0%
Utilities	-	-

Return for Risk

COSW vs. ARMW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Roundhill COST WeeklyPay ETF (COSW) 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.

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

Sharpe Ratios by Period

	COSW	ARMW	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	0.01	4.96	-4.95

Drawdowns

COSW vs. ARMW - Drawdown Comparison

The maximum COSW drawdown since its inception was -16.24%, smaller than the maximum ARMW drawdown of -48.47%. Use the drawdown chart below to compare losses from any high point for COSW and ARMW.

Drawdown Indicators

	COSW	ARMW	Difference
Max Drawdown Largest peak-to-trough decline	-16.24%	-48.47%	+32.23%
Current Drawdown Current decline from peak	-14.62%	0.00%	-14.62%
Average Drawdown Average peak-to-trough decline	-4.17%	-26.55%	+22.38%

Volatility

Volatility by Period

	COSW	ARMW	Difference
Volatility (1Y) Calculated over the trailing 1-year period	26.10%	88.46%	-62.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.10%	88.46%	-62.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.10%	88.46%	-62.36%

COSW vs. ARMW - Expense Ratio Comparison

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

Dividends

COSW vs. ARMW - Dividend Comparison

COSW's dividend yield for the trailing twelve months is around 18.13%, more than ARMW's 15.20% yield.

Position	TTM	2025
ARMW Roundhill ARM WeeklyPay ETF	15.20%	16.38%
COSW Roundhill COST WeeklyPay ETF	18.13%	4.96%

Frequently Asked Questions

Can I hold both COSW and ARMW in my portfolio?

COSW and ARMW have a correlation of -0.14, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, COSW 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, COSW or ARMW?

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

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

COSW has the higher dividend yield at 18.13%, compared with 15.20% for ARMW.

What is the main difference between COSW and ARMW?

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