CWII vs. BUCK

Last updated Jun 4, 2026

CWII (REX CRWV Growth & Income ETF) and BUCK (Simplify Treasury Option Income ETF) are both exchange-traded funds - CWII is a Derivative Income fund actively managed by REX Shares, while BUCK is a Government Bonds fund actively managed by Simplify. Both are actively managed. At a 0.07 correlation, their price movements are largely independent. CWII charges 1.03%/yr vs 0.35%/yr for BUCK.

Performance

CWII vs. BUCK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in REX CRWV Growth & Income ETF (CWII) and Simplify Treasury Option Income ETF (BUCK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CWII achieves a 37.23% return, which is significantly higher than BUCK's 1.90% return.

CWII

• 1D: -5.26%
• 1M: -7.64%
• YTD: 37.23%
• 6M: 17.21%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

BUCK

• 1D: 0.02%
• 1M: 0.38%
• YTD: 1.90%
• 6M: 2.09%
• 1Y: 7.95%
• 3Y*: 5.27%
• 5Y*: —
• 10Y*: —

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

CWII vs. BUCK - Yearly Performance Comparison

	2026 (YTD)	2025
CWII REX CRWV Growth & Income ETF	37.23%	-42.16%
BUCK Simplify Treasury Option Income ETF	1.90%	0.59%

Correlation

The correlation between CWII and BUCK is 0.07, 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 Nov 5, 2025	0.07

Return for Risk

CWII vs. BUCK — Risk / Return Rank

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

BUCK

BUCK Risk / Return Rank: 87
BUCK Sharpe Ratio Rank: 77
BUCK Sortino Ratio Rank: 84
BUCK Omega Ratio Rank: 86
BUCK Calmar Ratio Rank: 92
BUCK Martin Ratio Rank: 95

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.

CWII vs. BUCK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for REX CRWV Growth & Income ETF (CWII) and Simplify Treasury Option Income ETF (BUCK). 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

	CWII	BUCK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	2.54	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.38	1.47	-1.85

Drawdowns

CWII vs. BUCK - Drawdown Comparison

The maximum CWII drawdown since its inception was -48.46%, which is greater than BUCK's maximum drawdown of -5.43%. Use the drawdown chart below to compare losses from any high point for CWII and BUCK.

Drawdown Indicators

	CWII	BUCK	Difference
Max Drawdown Largest peak-to-trough decline	-48.46%	-5.43%	-43.03%
Max Drawdown (1Y) Largest decline over 1 year	—	-1.31%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-5.43%	—
Current Drawdown Current decline from peak	-20.63%	-0.04%	-20.59%
Average Drawdown Average peak-to-trough decline	-30.55%	-0.49%	-30.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.25%	—

Volatility

Volatility by Period

	CWII	BUCK	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.70%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.53%	—
Volatility (1Y) Calculated over the trailing 1-year period	88.61%	3.14%	+85.47%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	88.61%	3.49%	+85.12%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	88.61%	3.49%	+85.12%

CWII vs. BUCK - Expense Ratio Comparison

CWII has a 1.03% expense ratio, which is higher than BUCK's 0.35% expense ratio.

Dividends

CWII vs. BUCK - Dividend Comparison

CWII's dividend yield for the trailing twelve months is around 20.73%, more than BUCK's 7.42% yield.

Position	TTM	2025	2024	2023	2022
BUCK Simplify Treasury Option Income ETF	7.42%	7.59%	8.84%	4.84%	0.59%
CWII REX CRWV Growth & Income ETF	20.73%	6.09%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both CWII and BUCK in my portfolio?

CWII and BUCK have a correlation of 0.07, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CWII or BUCK?

On fees, BUCK is cheaper at 0.35% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CWII or BUCK?

BUCK is cheaper with a 0.35% expense ratio, compared with 1.03% for CWII.

Which ETF pays a higher dividend yield, CWII or BUCK?

CWII has the higher dividend yield at 20.73%, compared with 7.42% for BUCK.

What is the main difference between CWII and BUCK?

CWII is categorized as Derivative Income, while BUCK is Government Bonds. They also come from different issuers: REX Shares and Simplify. Their fees differ too: 1.03% for CWII and 0.35% for BUCK.