RBLY vs. BUCK

Last updated Jun 25, 2026

RBLY (YieldMax RBLX Option Income Strategy ETF) and BUCK (Simplify Treasury Option Income ETF) are both exchange-traded funds - RBLY is a Derivative Income fund actively managed by YieldMax, while BUCK is a Government Bonds fund actively managed by Simplify. Both are actively managed. At a correlation of -0.02, they often move in opposite directions. RBLY charges 0.99%/yr vs 0.35%/yr for BUCK.

Performance

RBLY vs. BUCK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in YieldMax RBLX Option Income Strategy ETF (RBLY) 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, RBLY achieves a -40.88% return, which is significantly lower than BUCK's 2.29% return.

RBLY

• 1D: 1.69%
• 1M: -0.84%
• YTD: -40.88%
• 6M: -41.14%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

BUCK

• 1D: 0.17%
• 1M: 0.38%
• YTD: 2.29%
• 6M: 2.48%
• 1Y: 6.70%
• 3Y*: 5.30%
• 5Y*: —
• 10Y*: —

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

RBLY vs. BUCK - Yearly Performance Comparison

	2026 (YTD)	2025
RBLY YieldMax RBLX Option Income Strategy ETF	-40.88%	-26.39%
BUCK Simplify Treasury Option Income ETF	2.29%	3.83%

Correlation

The correlation between RBLY and BUCK is -0.02, 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 Jul 29, 2025	-0.02

Return for Risk

RBLY vs. BUCK — Risk / Return Rank

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

RBLY

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

BUCK

BUCK Risk / Return Rank: 87
BUCK Sharpe Ratio Rank: 80
BUCK Sortino Ratio Rank: 83
BUCK Omega Ratio Rank: 88
BUCK Calmar Ratio Rank: 91
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.

RBLY vs. BUCK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for YieldMax RBLX Option Income Strategy ETF (RBLY) 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.

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.

	RBLY	BUCK	Difference
Sharpe ratio: Return per unit of total volatility	—	2.27	—
Sortino ratio: Return per unit of downside risk	—	3.33	—
Omega ratio: Gain probability vs. loss probability	—	1.49	—
Calmar ratio: Return relative to maximum drawdown	—	5.14	—
Martin ratio: Return relative to average drawdown	—	27.77	—

Drawdowns

RBLY vs. BUCK - Drawdown Comparison

The maximum RBLY drawdown since its inception was -66.96%, which is greater than BUCK's maximum drawdown of -5.43%. Use the drawdown chart below to compare losses from any high point for RBLY and BUCK.

Drawdown Indicators

	RBLY	BUCK	Difference
Max Drawdown Largest peak-to-trough decline	-66.96%	-5.43%	-61.53%
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	-62.45%	0.00%	-62.45%
Average Drawdown Average peak-to-trough decline	-34.83%	-0.49%	-34.34%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.24%	—

Volatility

Volatility by Period

	RBLY	BUCK	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.32%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.38%	—
Volatility (1Y) Calculated over the trailing 1-year period	52.82%	2.98%	+49.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	52.82%	3.46%	+49.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	52.82%	3.46%	+49.36%

RBLY vs. BUCK - Expense Ratio Comparison

RBLY has a 0.99% expense ratio, which is higher than BUCK's 0.35% expense ratio.

Dividends

RBLY vs. BUCK - Dividend Comparison

RBLY's dividend yield for the trailing twelve months is around 125.96%, more than BUCK's 7.39% yield.

Position	TTM	2025	2024	2023	2022
BUCK Simplify Treasury Option Income ETF	7.39%	7.59%	8.84%	4.84%	0.59%
RBLY YieldMax RBLX Option Income Strategy ETF	125.96%	36.84%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both RBLY and BUCK in my portfolio?

RBLY and BUCK have a correlation of -0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, RBLY 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, RBLY or BUCK?

BUCK is cheaper with a 0.35% expense ratio, compared with 0.99% for RBLY.

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

RBLY has the higher dividend yield at 125.96%, compared with 7.39% for BUCK.

What is the main difference between RBLY and BUCK?

RBLY is categorized as Derivative Income, while BUCK is Government Bonds. They also come from different issuers: YieldMax and Simplify. Their fees differ too: 0.99% for RBLY and 0.35% for BUCK.