AIPI vs. BUCK

Last updated Jun 3, 2026

AIPI (REX AI Equity Premium Income ETF) and BUCK (Simplify Treasury Option Income ETF) are both exchange-traded funds - AIPI is a Derivative Income fund actively managed by REX, while BUCK is a Government Bonds fund actively managed by Simplify. Both are actively managed. Over the past year, AIPI returned 32.04% vs 7.91% for BUCK. At a 0.04 correlation, their price movements are largely independent. AIPI charges 0.65%/yr vs 0.35%/yr for BUCK.

Performance

AIPI vs. BUCK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in REX AI Equity Premium Income ETF (AIPI) 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, AIPI achieves a 11.58% return, which is significantly higher than BUCK's 1.88% return.

AIPI

• 1D: 0.15%
• 1M: 10.17%
• YTD: 11.58%
• 6M: 11.05%
• 1Y: 32.04%
• 3Y*: —
• 5Y*: —
• 10Y*: —

BUCK

• 1D: 0.06%
• 1M: 0.34%
• YTD: 1.88%
• 6M: 2.33%
• 1Y: 7.91%
• 3Y*: 5.26%
• 5Y*: —
• 10Y*: —

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

AIPI vs. BUCK - Yearly Performance Comparison

	2026 (YTD)	2025	2024
AIPI REX AI Equity Premium Income ETF	11.58%	16.38%	15.36%
BUCK Simplify Treasury Option Income ETF	1.88%	4.13%	4.77%

Correlation

The correlation between AIPI 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 (1Y) Calculated over the trailing 1-year period	-0.02
Correlation (All Time) Calculated using the full available price history since Jun 5, 2024	0.04

AIPI vs. BUCK - Sectors Allocation Comparison

Sectors	AIPI	BUCK
Technology	90.9%	-
Communication Services	5.9%	-
Consumer Cyclical	3.2%	-
Basic Materials	-	-
Consumer Defensive	-	-
Energy	-	-
Financial Services	-	100.0%
Healthcare	-	-
Industrials	-	-
Real Estate	-	-
Utilities	-	-

Return for Risk

AIPI vs. BUCK — Risk / Return Rank

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

AIPI

AIPI Risk / Return Rank: 52
AIPI Sharpe Ratio Rank: 59
AIPI Sortino Ratio Rank: 54
AIPI Omega Ratio Rank: 59
AIPI Calmar Ratio Rank: 46
AIPI Martin Ratio Rank: 44

BUCK

BUCK Risk / Return Rank: 86
BUCK Sharpe Ratio Rank: 77
BUCK Sortino Ratio Rank: 84
BUCK Omega Ratio Rank: 87
BUCK Calmar Ratio Rank: 89
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.

AIPI vs. BUCK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for REX AI Equity Premium Income ETF (AIPI) 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.

	AIPI	BUCK	Difference
Sharpe ratio Return per unit of total volatility	2.02	2.53	-0.50
Sortino ratio Return per unit of downside risk	2.62	3.81	-1.18
Omega ratio Gain probability vs. loss probability	1.37	1.54	-0.18
Calmar ratio Return relative to maximum drawdown	2.32	5.49	-3.16
Martin ratio Return relative to average drawdown	7.22	29.09	-21.86
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AIPI vs. BUCK - Sharpe Ratio Comparison

The current AIPI Sharpe Ratio is 2.02, which is comparable to the BUCK Sharpe Ratio of 2.53. The chart below compares the historical Sharpe Ratios of AIPI and BUCK, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	AIPI	BUCK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.02	2.53	-0.50
Sharpe Ratio (All Time) Calculated using the full available price history	1.06	1.47	-0.41

Drawdowns

AIPI vs. BUCK - Drawdown Comparison

The maximum AIPI drawdown since its inception was -25.25%, which is greater than BUCK's maximum drawdown of -5.43%. Use the drawdown chart below to compare losses from any high point for AIPI and BUCK.

Drawdown Indicators

	AIPI	BUCK	Difference
Max Drawdown Largest peak-to-trough decline	-25.25%	-5.43%	-19.82%
Max Drawdown (1Y) Largest decline over 1 year	-14.40%	-1.31%	-13.09%
Max Drawdown (3Y) Largest decline over 3 years	—	-5.43%	—
Current Drawdown Current decline from peak	0.00%	-0.06%	+0.06%
Average Drawdown Average peak-to-trough decline	-4.67%	-0.49%	-4.18%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.63%	0.25%	+4.38%

Volatility

AIPI vs. BUCK - Volatility Comparison

REX AI Equity Premium Income ETF (AIPI) has a higher volatility of 2.59% compared to Simplify Treasury Option Income ETF (BUCK) at 0.70%. This indicates that AIPI's price experiences larger fluctuations and is considered to be riskier than BUCK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AIPI	BUCK	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.59%	0.70%	+1.89%
Volatility (6M) Calculated over the trailing 6-month period	12.93%	1.53%	+11.40%
Volatility (1Y) Calculated over the trailing 1-year period	15.94%	3.22%	+12.72%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.40%	3.49%	+17.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.40%	3.49%	+17.91%

AIPI vs. BUCK - Expense Ratio Comparison

AIPI has a 0.65% expense ratio, which is higher than BUCK's 0.35% expense ratio.

Dividends

AIPI vs. BUCK - Dividend Comparison

AIPI's dividend yield for the trailing twelve months is around 33.63%, more than BUCK's 7.42% yield.

Position	TTM	2025	2024	2023	2022
AIPI REX AI Equity Premium Income ETF	33.63%	37.84%	18.13%	0.00%	0.00%
BUCK Simplify Treasury Option Income ETF	7.42%	7.59%	8.84%	4.84%	0.59%

Frequently Asked Questions

Can I hold both AIPI and BUCK in my portfolio?

AIPI 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 is riskier, AIPI or BUCK?

AIPI has higher volatility (2.59%) compared to BUCK (0.70%). In terms of maximum drawdown, AIPI dropped -25.25% vs BUCK's -5.43%.

Which ETF is better, AIPI or BUCK?

On 1-year performance, AIPI leads with 32.04% vs 7.91% for BUCK. On fees, BUCK is cheaper at 0.35% per year. On volatility, BUCK has been the lower-risk option at 0.70%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, AIPI or BUCK?

Over the 1-year period, AIPI has performed better with a 32.04% return vs 7.91%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, AIPI or BUCK?

BUCK is cheaper with a 0.35% expense ratio, compared with 0.65% for AIPI.

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

AIPI has the higher dividend yield at 33.63%, compared with 7.42% for BUCK.

What is the main difference between AIPI and BUCK?

AIPI is categorized as Derivative Income, while BUCK is Government Bonds. They also come from different issuers: REX and Simplify. Their fees differ too: 0.65% for AIPI and 0.35% for BUCK.

Which has better risk-adjusted returns?

BUCK currently has the higher Sharpe Ratio (2.53 vs 2.02), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.