NUKX vs. COSW

Last updated Jun 3, 2026

NUKX (Nicholas Nuclear Income ETF) and COSW (Roundhill COST WeeklyPay ETF) are both Derivative Income funds. Both are actively managed. At a correlation of -0.27, they often move in opposite directions. NUKX charges 1.07%/yr vs 0.99%/yr for COSW.

Performance

NUKX vs. COSW - Performance Comparison

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

Returns By Period

NUKX

• 1D: 5.13%
• 1M: -2.86%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

COSW

• 1D: 1.00%
• 1M: -7.30%
• YTD: 11.11%
• 6M: 1.96%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

NUKX vs. COSW - Yearly Performance Comparison

	2026 (YTD)
NUKX Nicholas Nuclear Income ETF	0.70%
COSW Roundhill COST WeeklyPay ETF	-7.21%

Correlation

The correlation between NUKX and COSW is -0.27, 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 Mar 4, 2026	-0.27

NUKX vs. COSW - Sectors Allocation Comparison

Sectors	NUKX	COSW
Utilities	39.6%	-
Energy	21.7%	-
Financial Services	12.6%	-
Industrials	9.7%	-
Basic Materials	-	-
Communication Services	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	7.9%
Healthcare	-	-
Real Estate	-	-
Technology	-	-

Return for Risk

NUKX vs. COSW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Nicholas Nuclear Income ETF (NUKX) 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

	NUKX	COSW	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	0.06	-0.05	+0.11

Drawdowns

NUKX vs. COSW - Drawdown Comparison

The maximum NUKX drawdown since its inception was -18.73%, which is greater than COSW's maximum drawdown of -16.24%. Use the drawdown chart below to compare losses from any high point for NUKX and COSW.

Drawdown Indicators

	NUKX	COSW	Difference
Max Drawdown Largest peak-to-trough decline	-18.73%	-16.24%	-2.49%
Current Drawdown Current decline from peak	-7.37%	-15.40%	+8.03%
Average Drawdown Average peak-to-trough decline	-6.96%	-4.10%	-2.86%

Volatility

Volatility by Period

	NUKX	COSW	Difference
Volatility (1Y) Calculated over the trailing 1-year period	49.06%	26.16%	+22.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	49.06%	26.16%	+22.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	49.06%	26.16%	+22.90%

NUKX vs. COSW - Expense Ratio Comparison

NUKX has a 1.07% expense ratio, which is higher than COSW's 0.99% expense ratio.

Dividends

NUKX vs. COSW - Dividend Comparison

NUKX's dividend yield for the trailing twelve months is around 3.62%, less than COSW's 18.29% yield.

Position	TTM	2025
COSW Roundhill COST WeeklyPay ETF	18.29%	4.96%
NUKX Nicholas Nuclear Income ETF	3.62%	0.00%

Frequently Asked Questions

Can I hold both NUKX and COSW in my portfolio?

NUKX and COSW have a correlation of -0.27, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, NUKX or COSW?

On fees, COSW is cheaper at 0.99% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, NUKX or COSW?

COSW is cheaper with a 0.99% expense ratio, compared with 1.07% for NUKX.

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

COSW has the higher dividend yield at 18.29%, compared with 3.62% for NUKX.

What is the main difference between NUKX and COSW?

They also come from different issuers: Nicholas Wealth and Roundhill. Their fees differ too: 1.07% for NUKX and 0.99% for COSW.