FTKI vs. COSW

Last updated Jun 4, 2026

FTKI (First Trust Small Cap BuyWrite Income ETF) and COSW (Roundhill COST WeeklyPay ETF) are both Derivative Income funds. Both are actively managed. At a 0.01 correlation, their price movements are largely independent. FTKI charges 0.85%/yr vs 0.99%/yr for COSW.

Performance

FTKI vs. COSW - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in First Trust Small Cap BuyWrite Income ETF (FTKI) and Roundhill COST WeeklyPay ETF (COSW). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FTKI achieves a 9.41% return, which is significantly lower than COSW's 12.13% return.

FTKI

• 1D: -0.19%
• 1M: 0.46%
• YTD: 9.41%
• 6M: 9.82%
• 1Y: 18.90%
• 3Y*: —
• 5Y*: —
• 10Y*: —

COSW

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

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

FTKI vs. COSW - Yearly Performance Comparison

	2026 (YTD)	2025
FTKI First Trust Small Cap BuyWrite Income ETF	9.41%	4.41%
COSW Roundhill COST WeeklyPay ETF	12.13%	-10.71%

Correlation

The correlation between FTKI and COSW is 0.01, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (All Time) Calculated using the full available price history since Oct 24, 2025	0.01

FTKI vs. COSW - Sectors Allocation Comparison

Sectors	FTKI	COSW
Financial Services	21.8%	-
Technology	14.9%	-
Industrials	12.8%	-
Consumer Cyclical	11.2%	-
Energy	9.6%	-
Healthcare	9.0%	-
Real Estate	7.4%	-
Basic Materials	4.3%	-
Communication Services	3.2%	-
Consumer Defensive	2.1%	7.9%
Utilities	2.1%	-

Return for Risk

FTKI vs. COSW — Risk / Return Rank

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

FTKI

FTKI Risk / Return Rank: 63
FTKI Sharpe Ratio Rank: 59
FTKI Sortino Ratio Rank: 61
FTKI Omega Ratio Rank: 61
FTKI Calmar Ratio Rank: 70
FTKI Martin Ratio Rank: 64

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.

FTKI vs. COSW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for First Trust Small Cap BuyWrite Income ETF (FTKI) 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.

	FTKI	COSW	Difference
Sharpe ratio: Return per unit of total volatility	1.96	—	—
Sortino ratio: Return per unit of downside risk	2.81	—	—
Omega ratio: Gain probability vs. loss probability	1.37	—	—
Calmar ratio: Return relative to maximum drawdown	3.41	—	—
Martin ratio: Return relative to average drawdown	11.54	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	FTKI	COSW	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.96	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.73	0.01	+0.72

Drawdowns

FTKI vs. COSW - Drawdown Comparison

The maximum FTKI drawdown since its inception was -15.17%, smaller than the maximum COSW drawdown of -16.24%. Use the drawdown chart below to compare losses from any high point for FTKI and COSW.

Drawdown Indicators

	FTKI	COSW	Difference
Max Drawdown Largest peak-to-trough decline	-15.17%	-16.24%	+1.07%
Max Drawdown (1Y) Largest decline over 1 year	-5.56%	—	—
Current Drawdown Current decline from peak	-0.97%	-14.62%	+13.65%
Average Drawdown Average peak-to-trough decline	-2.59%	-4.17%	+1.58%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.64%	—	—

Volatility

Volatility by Period

	FTKI	COSW	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.54%	—	—
Volatility (6M) Calculated over the trailing 6-month period	7.44%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	9.69%	26.10%	-16.41%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.31%	26.10%	-10.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.31%	26.10%	-10.79%

FTKI vs. COSW - Expense Ratio Comparison

FTKI has a 0.85% expense ratio, which is lower than COSW's 0.99% expense ratio.

Dividends

FTKI vs. COSW - Dividend Comparison

FTKI's dividend yield for the trailing twelve months is around 11.51%, less than COSW's 18.13% yield.

Position	TTM	2025
COSW Roundhill COST WeeklyPay ETF	18.13%	4.96%
FTKI First Trust Small Cap BuyWrite Income ETF	11.51%	8.99%

Frequently Asked Questions

Can I hold both FTKI and COSW in my portfolio?

FTKI and COSW have a correlation of 0.01, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, FTKI or COSW?

On fees, FTKI is cheaper at 0.85% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, FTKI or COSW?

FTKI is cheaper with a 0.85% expense ratio, compared with 0.99% for COSW.

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

COSW has the higher dividend yield at 18.13%, compared with 11.51% for FTKI.

What is the main difference between FTKI and COSW?

They also come from different issuers: First Trust and Roundhill. Their fees differ too: 0.85% for FTKI and 0.99% for COSW.