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COSW vs. IVVW
Performance
Return for Risk
Drawdowns
Volatility
Dividends

COSW vs. IVVW

Last updated Jun 25, 2026

COSW (Roundhill COST WeeklyPay ETF) and IVVW (iShares S&P 500 BuyWrite ETF) are both Derivative Income funds. COSW is actively managed, while IVVW is passively managed. At a correlation of -0.04, they often move in opposite directions. COSW charges 0.99%/yr vs 0.25%/yr for IVVW.

Performance

COSW vs. IVVW - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Roundhill COST WeeklyPay ETF (COSW) and iShares S&P 500 BuyWrite ETF (IVVW). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, COSW achieves a 11.78% return, which is significantly higher than IVVW's 4.06% return.

COSW

1D
0.24%
1M
-8.28%
YTD
11.78%
6M
10.24%
1Y
—
3Y*
—
5Y*
—
10Y*
—

IVVW

1D
0.05%
1M
0.21%
YTD
4.06%
6M
3.97%
1Y
16.65%
3Y*
—
5Y*
—
10Y*
—
*Multi-year figures are annualized to reflect compound growth (CAGR)

COSW vs. IVVW - Yearly Performance Comparison

2026 (YTD)2025
COSW
Roundhill COST WeeklyPay ETF		11.78%-10.48%
IVVW
iShares S&P 500 BuyWrite ETF		4.06%3.87%

Correlation

The correlation between COSW and IVVW is -0.04, 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 23, 2025

-0.04

COSW vs. IVVW - Sectors Allocation Comparison

Sectors
COSW
IVVW

Consumer Defensive

8.4%
4.6%

Basic Materials

-

1.7%

Communication Services

-

10.8%

Consumer Cyclical

-

10.0%

Energy

-

3.2%

Financial Services

-

11.0%

Healthcare

-

8.4%

Industrials

-

7.9%

Real Estate

-

1.8%

Technology

-

38.4%

Utilities

-

2.1%

Consumer Defensive

COSW
8.4%
IVVW
4.6%

Basic Materials

COSW

-

IVVW
1.7%

Communication Services

COSW

-

IVVW
10.8%

Consumer Cyclical

COSW

-

IVVW
10.0%

Energy

COSW

-

IVVW
3.2%

Financial Services

COSW

-

IVVW
11.0%

Healthcare

COSW

-

IVVW
8.4%

Industrials

COSW

-

IVVW
7.9%

Real Estate

COSW

-

IVVW
1.8%

Technology

COSW

-

IVVW
38.4%

Utilities

COSW

-

IVVW
2.1%

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

Roundhill COST WeeklyPay ETF

iShares S&P 500 BuyWrite ETF

Often compared with COSW:
COSW vs. WMTICOSW vs. COSTCOSW vs. ROCYCOSW vs. DRKYCOSW vs. SPYICOSW vs. MRNYCOSW vs. TPRY
Often compared with IVVW:
IVVW vs. IVVIVVW vs. BALIIVVW vs. IWMWIVVW vs. SPYIVVW vs. VOOIVVW vs. IVWIVVW vs. SCHG

Return for Risk

COSW vs. IVVW — Risk / Return Rank

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

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

IVVW
IVVW Risk / Return Rank: 7575
Overall Rank
IVVW Sharpe Ratio Rank: 7373
Sharpe Ratio Rank
IVVW Sortino Ratio Rank: 7171
Sortino Ratio Rank
IVVW Omega Ratio Rank: 8484
Omega Ratio Rank
IVVW Calmar Ratio Rank: 6565
Calmar Ratio Rank
IVVW Martin Ratio Rank: 8484
Martin Ratio Rank
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. IVVW - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Roundhill COST WeeklyPay ETF (COSW) and iShares S&P 500 BuyWrite ETF (IVVW). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

COSWIVVWDifference
Sharpe ratioReturn per unit of total volatility

—

2.09

—

Sortino ratioReturn per unit of downside risk

—

2.85

—

Omega ratioGain probability vs. loss probability

—

1.45

—

Calmar ratioReturn relative to maximum drawdown

—

2.88

—

Martin ratioReturn relative to average drawdown

—

15.32

—

COSW vs. IVVW - Sharpe Ratio Comparison

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Drawdowns

COSW vs. IVVW - Drawdown Comparison

The maximum COSW drawdown since its inception was -16.24%, roughly equal to the maximum IVVW drawdown of -16.79%. Use the drawdown chart below to compare losses from any high point for COSW and IVVW.

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Drawdown Indicators

COSWIVVWDifference

Max Drawdown

Largest peak-to-trough decline

-16.24%

-16.79%

+0.55%

Max Drawdown (1Y)

Largest decline over 1 year

—

-5.81%

—

Current Drawdown

Current decline from peak

-14.89%

-1.33%

-13.56%

Average Drawdown

Average peak-to-trough decline

-4.94%

-1.73%

-3.21%

Ulcer Index

Depth and duration of drawdowns from previous peaks

—

1.09%

—

Volatility

COSW vs. IVVW - Volatility Comparison

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Volatility by Period

COSWIVVWDifference

Volatility (1M)

Calculated over the trailing 1-month period

—

3.44%

—

Volatility (6M)

Calculated over the trailing 6-month period

—

6.89%

—

Volatility (1Y)

Calculated over the trailing 1-year period

25.46%

8.04%

+17.42%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

25.46%

12.68%

+12.78%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

25.46%

12.68%

+12.78%

COSW vs. IVVW - Expense Ratio Comparison

COSW has a 0.99% expense ratio, which is higher than IVVW's 0.25% expense ratio.

Dividends

COSW vs. IVVW - Dividend Comparison

COSW's dividend yield for the trailing twelve months is around 19.61%, less than IVVW's 19.85% yield.

PositionTTM20252024
COSW
Roundhill COST WeeklyPay ETF		19.61%4.96%0.00%
IVVW
iShares S&P 500 BuyWrite ETF		19.85%18.55%13.72%

Frequently Asked Questions

COSW and IVVW have a correlation of -0.04, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

On fees, IVVW is cheaper at 0.25% per year. The better choice depends on whether you care most about return, fees, risk, or income.

IVVW is cheaper with a 0.25% expense ratio, compared with 0.99% for COSW.

IVVW has the higher dividend yield at 19.85%, compared with 19.61% for COSW.

They also come from different issuers: Roundhill and iShares. Their fees differ too: 0.99% for COSW and 0.25% for IVVW.

Portfolio Optimizer

Find the right allocation for COSW and IVVW

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