MSTK vs. BUCK

Last updated Jun 4, 2026

MSTK (Tuttle Capital MSTR 0DTE Covered Call ETF) and BUCK (Simplify Treasury Option Income ETF) are both exchange-traded funds - MSTK is a Derivative Income fund actively managed by Tuttle Capital Management, while BUCK is a Government Bonds fund actively managed by Simplify. Both are actively managed. At a 0.02 correlation, their price movements are largely independent. MSTK charges 0.99%/yr vs 0.35%/yr for BUCK.

Performance

MSTK vs. BUCK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Tuttle Capital MSTR 0DTE Covered Call ETF (MSTK) and Simplify Treasury Option Income ETF (BUCK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

MSTK

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

BUCK

• 1D: 0.09%
• 1M: 0.43%
• YTD: 1.99%
• 6M: 1.92%
• 1Y: 7.46%
• 3Y*: 5.27%
• 5Y*: —
• 10Y*: —

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

MSTK vs. BUCK - Yearly Performance Comparison

	2026 (YTD)	2025
MSTK Tuttle Capital MSTR 0DTE Covered Call ETF	-20.94%	-47.41%
BUCK Simplify Treasury Option Income ETF	1.99%	0.99%

Correlation

The correlation between MSTK 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 Oct 24, 2025	0.02

Return for Risk

MSTK 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: 85
BUCK Sharpe Ratio Rank: 76
BUCK Sortino Ratio Rank: 81
BUCK Omega Ratio Rank: 85
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.

MSTK vs. BUCK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tuttle Capital MSTR 0DTE Covered Call ETF (MSTK) 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

	MSTK	BUCK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	2.42	—
Sharpe Ratio (All Time) Calculated using the full available price history	—	1.48	—

Drawdowns

Drawdown Indicators

	MSTK	BUCK	Difference
Max Drawdown Largest peak-to-trough decline	—	-5.43%	—
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	—	0.00%	—
Average Drawdown Average peak-to-trough decline	—	-0.49%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.25%	—

Volatility

Volatility by Period

	MSTK	BUCK	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.70%	—
Volatility (6M) Calculated over the trailing 6-month period	—	1.52%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	3.14%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	3.48%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	3.48%	—

MSTK vs. BUCK - Expense Ratio Comparison

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

Dividends

MSTK vs. BUCK - Dividend Comparison

MSTK's dividend yield for the trailing twelve months is around 49.03%, more than BUCK's 7.41% yield.

Position	TTM	2025	2024	2023	2022
BUCK Simplify Treasury Option Income ETF	7.41%	7.59%	8.84%	4.84%	0.59%
MSTK Tuttle Capital MSTR 0DTE Covered Call ETF	49.03%	26.75%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both MSTK and BUCK in my portfolio?

MSTK 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, MSTK 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, MSTK or BUCK?

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

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

MSTK has the higher dividend yield at 49.03%, compared with 7.41% for BUCK.

What is the main difference between MSTK and BUCK?

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