COSW vs. TSMY

Last updated Jun 4, 2026

COSW (Roundhill COST WeeklyPay ETF) and TSMY (YieldMax TSM Option Income Strategy ETF) are both Derivative Income funds. Both are actively managed. At a correlation of -0.10, they often move in opposite directions. Both charge a 0.99% expense ratio.

Performance

COSW vs. TSMY - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Roundhill COST WeeklyPay ETF (COSW) and YieldMax TSM Option Income Strategy ETF (TSMY). 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 TSMY's 37.04% return.

COSW

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

TSMY

• 1D: -1.37%
• 1M: 7.48%
• YTD: 37.04%
• 6M: 39.21%
• 1Y: 92.13%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

COSW vs. TSMY - Yearly Performance Comparison

	2026 (YTD)	2025
COSW Roundhill COST WeeklyPay ETF	12.13%	-10.71%
TSMY YieldMax TSM Option Income Strategy ETF	37.04%	3.21%

Correlation

The correlation between COSW and TSMY is -0.10, 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	-0.10

Return for Risk

COSW vs. TSMY — Risk / Return Rank

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

TSMY

TSMY Risk / Return Rank: 88
TSMY Sharpe Ratio Rank: 90
TSMY Sortino Ratio Rank: 85
TSMY Omega Ratio Rank: 82
TSMY Calmar Ratio Rank: 91
TSMY 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.

COSW vs. TSMY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Roundhill COST WeeklyPay ETF (COSW) and YieldMax TSM Option Income Strategy ETF (TSMY). 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	TSMY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	3.21	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.01	1.56	-1.55

Drawdowns

COSW vs. TSMY - Drawdown Comparison

The maximum COSW drawdown since its inception was -16.24%, smaller than the maximum TSMY drawdown of -31.15%. Use the drawdown chart below to compare losses from any high point for COSW and TSMY.

Drawdown Indicators

	COSW	TSMY	Difference
Max Drawdown Largest peak-to-trough decline	-16.24%	-31.15%	+14.91%
Max Drawdown (1Y) Largest decline over 1 year	—	-15.50%	—
Current Drawdown Current decline from peak	-14.62%	-1.37%	-13.25%
Average Drawdown Average peak-to-trough decline	-4.17%	-5.51%	+1.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	4.17%	—

Volatility

Volatility by Period

	COSW	TSMY	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	9.52%	—
Volatility (6M) Calculated over the trailing 6-month period	—	22.68%	—
Volatility (1Y) Calculated over the trailing 1-year period	26.10%	28.87%	-2.77%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.10%	33.22%	-7.12%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	26.10%	33.22%	-7.12%

COSW vs. TSMY - Expense Ratio Comparison

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

Dividends

COSW vs. TSMY - Dividend Comparison

COSW's dividend yield for the trailing twelve months is around 18.13%, less than TSMY's 52.19% yield.

Position	TTM	2025	2024
COSW Roundhill COST WeeklyPay ETF	18.13%	4.96%	0.00%
TSMY YieldMax TSM Option Income Strategy ETF	52.19%	56.76%	13.71%

Frequently Asked Questions

Can I hold both COSW and TSMY in my portfolio?

COSW and TSMY have a correlation of -0.10, 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 TSMY?

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 TSMY?

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

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

TSMY has the higher dividend yield at 52.19%, compared with 18.13% for COSW.

What is the main difference between COSW and TSMY?

They also come from different issuers: Roundhill and YieldMax.