ISPY vs. BUCK

Last updated Jun 24, 2026

ISPY (ProShares S&P 500 High Income ETF) and BUCK (Simplify Treasury Option Income ETF) are both exchange-traded funds - ISPY is a Derivative Income fund tracking the S&P 500 Daily Covered Call Index, while BUCK is a Government Bonds fund actively managed by Simplify. ISPY is passively managed, while BUCK is actively managed. Over the past year, ISPY returned 20.58% vs 6.93% for BUCK. At a 0.09 correlation, their price movements are largely independent. ISPY charges 0.55%/yr vs 0.35%/yr for BUCK.

Performance

ISPY vs. BUCK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares S&P 500 High Income ETF (ISPY) 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, ISPY achieves a 6.70% return, which is significantly higher than BUCK's 2.12% return.

ISPY

• 1D: -1.35%
• 1M: -1.29%
• YTD: 6.70%
• 6M: 5.74%
• 1Y: 20.58%
• 3Y*: —
• 5Y*: —
• 10Y*: —

BUCK

• 1D: 0.04%
• 1M: 0.21%
• YTD: 2.12%
• 6M: 1.99%
• 1Y: 6.93%
• 3Y*: 5.24%
• 5Y*: —
• 10Y*: —

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

ISPY vs. BUCK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
ISPY ProShares S&P 500 High Income ETF	6.70%	13.15%	21.31%	0.35%
BUCK Simplify Treasury Option Income ETF	2.12%	4.13%	7.25%	0.30%

Correlation

The correlation between ISPY and BUCK is 0.10, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.10
Correlation (All Time) Calculated using the full available price history since Dec 20, 2023	0.09

Return for Risk

ISPY vs. BUCK — Risk / Return Rank

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

ISPY

ISPY Risk / Return Rank: 52
ISPY Sharpe Ratio Rank: 52
ISPY Sortino Ratio Rank: 47
ISPY Omega Ratio Rank: 50
ISPY Calmar Ratio Rank: 51
ISPY Martin Ratio Rank: 59

BUCK

BUCK Risk / Return Rank: 86
BUCK Sharpe Ratio Rank: 77
BUCK Sortino Ratio Rank: 82
BUCK Omega Ratio Rank: 86
BUCK Calmar Ratio Rank: 90
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.

ISPY vs. BUCK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares S&P 500 High Income ETF (ISPY) 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.

	ISPY	BUCK	Difference
Sharpe ratio: Return per unit of total volatility	1.72	2.34	-0.62
Sortino ratio: Return per unit of downside risk	2.26	3.44	-1.17
Omega ratio: Gain probability vs. loss probability	1.30	1.50	-0.20
Calmar ratio: Return relative to maximum drawdown	2.45	5.32	-2.87
Martin ratio: Return relative to average drawdown	10.07	28.71	-18.64

ISPY vs. BUCK - Sharpe Ratio Comparison

The current ISPY Sharpe Ratio is 1.72, which is comparable to the BUCK Sharpe Ratio of 2.34. The chart below compares the historical Sharpe Ratios of ISPY 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.

Drawdowns

ISPY vs. BUCK - Drawdown Comparison

The maximum ISPY drawdown since its inception was -16.88%, which is greater than BUCK's maximum drawdown of -5.43%. Use the drawdown chart below to compare losses from any high point for ISPY and BUCK.

Drawdown Indicators

	ISPY	BUCK	Difference
Max Drawdown Largest peak-to-trough decline	-16.88%	-5.43%	-11.45%
Max Drawdown (1Y) Largest decline over 1 year	-8.43%	-1.31%	-7.12%
Max Drawdown (3Y) Largest decline over 3 years	—	-5.43%	—
Current Drawdown Current decline from peak	-3.35%	-0.04%	-3.31%
Average Drawdown Average peak-to-trough decline	-2.09%	-0.49%	-1.60%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.05%	0.24%	+1.81%

Volatility

ISPY vs. BUCK - Volatility Comparison

ProShares S&P 500 High Income ETF (ISPY) has a higher volatility of 4.70% compared to Simplify Treasury Option Income ETF (BUCK) at 0.28%. This indicates that ISPY'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

	ISPY	BUCK	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.70%	0.28%	+4.42%
Volatility (6M) Calculated over the trailing 6-month period	9.53%	1.37%	+8.16%
Volatility (1Y) Calculated over the trailing 1-year period	12.08%	2.98%	+9.10%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.73%	3.46%	+10.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.73%	3.46%	+10.27%

ISPY vs. BUCK - Expense Ratio Comparison

ISPY has a 0.55% expense ratio, which is higher than BUCK's 0.35% expense ratio.

Dividends

ISPY vs. BUCK - Dividend Comparison

ISPY's dividend yield for the trailing twelve months is around 4.53%, less than BUCK's 7.40% yield.

Position	TTM	2025	2024	2023	2022
BUCK Simplify Treasury Option Income ETF	7.40%	7.59%	8.84%	4.84%	0.59%
ISPY ProShares S&P 500 High Income ETF	4.53%	8.56%	9.84%	0.00%	0.00%

Frequently Asked Questions

Can I hold both ISPY and BUCK in my portfolio?

ISPY and BUCK 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 is riskier, ISPY or BUCK?

ISPY has higher volatility (4.70%) compared to BUCK (0.28%). In terms of maximum drawdown, ISPY dropped -16.88% vs BUCK's -5.43%.

Which ETF is better, ISPY or BUCK?

On 1-year performance, ISPY leads with 20.58% vs 6.93% for BUCK. On fees, BUCK is cheaper at 0.35% per year. On volatility, BUCK has been the lower-risk option at 0.28%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, ISPY or BUCK?

Over the 1-year period, ISPY has performed better with a 20.58% return vs 6.93%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, ISPY or BUCK?

BUCK is cheaper with a 0.35% expense ratio, compared with 0.55% for ISPY.

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

BUCK has the higher dividend yield at 7.40%, compared with 4.53% for ISPY.

What is the main difference between ISPY and BUCK?

ISPY is categorized as Derivative Income, while BUCK is Government Bonds. They also come from different issuers: ProShares and Simplify. Their fees differ too: 0.55% for ISPY and 0.35% for BUCK.

Which has better risk-adjusted returns?

BUCK currently has the higher Sharpe Ratio (2.34 vs 1.72), 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.