OARK vs. GMAR

Last updated Apr 2, 2026

Compare and contrast key facts about YieldMax Innovation Option Income Strategy ETF (OARK) and FT Cboe Vest U.S. Equity Moderate Buffer ETF - March (GMAR).

OARK and GMAR are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. OARK is an actively managed fund by YieldMax. It was launched on Nov 22, 2022. GMAR is an actively managed fund by FT Vest. It was launched on Mar 16, 2023.

Performance

OARK vs. GMAR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in YieldMax Innovation Option Income Strategy ETF (OARK) and FT Cboe Vest U.S. Equity Moderate Buffer ETF - March (GMAR). The values are adjusted to include any dividend payments, if applicable.

OARK vs. GMAR - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
OARK YieldMax Innovation Option Income Strategy ETF	-6.86%	20.37%	7.32%	18.76%
GMAR FT Cboe Vest U.S. Equity Moderate Buffer ETF - March	2.32%	9.29%	12.14%	11.95%

Returns By Period

In the year-to-date period, OARK achieves a -6.86% return, which is significantly lower than GMAR's 2.32% return.

OARK

• 1D: 1.06%
• 1M: -4.07%
• YTD: -6.86%
• 6M: -13.09%
• 1Y: 32.55%
• 3Y*: 11.19%
• 5Y*: —
• 10Y*: —

GMAR

• 1D: 0.48%
• 1M: 1.40%
• YTD: 2.32%
• 6M: 4.36%
• 1Y: 12.40%
• 3Y*: 11.31%
• 5Y*: —
• 10Y*: —

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

OARK vs. GMAR - Expense Ratio Comparison

OARK has a 0.99% expense ratio, which is higher than GMAR's 0.85% expense ratio.

OARK

YieldMax Innovation Option Income Strategy ETF

GMAR

FT Cboe Vest U.S. Equity Moderate Buffer ETF - March

Return for Risk

OARK vs. GMAR — Risk / Return Rank

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

OARK

OARK Risk / Return Rank: 50
OARK Sharpe Ratio Rank: 53
OARK Sortino Ratio Rank: 56
OARK Omega Ratio Rank: 48
OARK Calmar Ratio Rank: 54
OARK Martin Ratio Rank: 38

GMAR

GMAR Risk / Return Rank: 81
GMAR Sharpe Ratio Rank: 76
GMAR Sortino Ratio Rank: 79
GMAR Omega Ratio Rank: 94
GMAR Calmar Ratio Rank: 66
GMAR Martin Ratio Rank: 88

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.

OARK vs. GMAR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for YieldMax Innovation Option Income Strategy ETF (OARK) and FT Cboe Vest U.S. Equity Moderate Buffer ETF - March (GMAR). 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.

	OARK	GMAR	Difference
Sharpe ratio Return per unit of total volatility	0.99	1.46	-0.47
Sortino ratio Return per unit of downside risk	1.50	2.14	-0.64
Omega ratio Gain probability vs. loss probability	1.19	1.46	-0.27
Calmar ratio Return relative to maximum drawdown	1.45	1.84	-0.39
Martin ratio Return relative to average drawdown	3.71	11.96	-8.26
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

OARK vs. GMAR - Sharpe Ratio Comparison

The current OARK Sharpe Ratio is 0.99, which is lower than the GMAR Sharpe Ratio of 1.46. The chart below compares the historical Sharpe Ratios of OARK and GMAR, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	OARK	GMAR	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.99	1.46	-0.47
Sharpe Ratio (All Time) Calculated using the full available price history	0.27	1.71	-1.44

Correlation

The correlation between OARK and GMAR is 0.63, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

OARK vs. GMAR - Dividend Comparison

OARK's dividend yield for the trailing twelve months is around 65.84%, while GMAR has not paid dividends to shareholders.

	TTM	2025	2024	2023
OARK YieldMax Innovation Option Income Strategy ETF	65.84%	61.86%	47.86%	45.03%
GMAR FT Cboe Vest U.S. Equity Moderate Buffer ETF - March	0.00%	0.00%	0.00%	0.00%

Drawdowns

OARK vs. GMAR - Drawdown Comparison

The maximum OARK drawdown since its inception was -35.48%, which is greater than GMAR's maximum drawdown of -9.11%. Use the drawdown chart below to compare losses from any high point for OARK and GMAR.

Drawdown Indicators

	OARK	GMAR	Difference
Max Drawdown Largest peak-to-trough decline	-35.48%	-9.11%	-26.37%
Max Drawdown (1Y) Largest decline over 1 year	-23.26%	-6.85%	-16.41%
Current Drawdown Current decline from peak	-18.14%	0.00%	-18.14%
Average Drawdown Average peak-to-trough decline	-10.65%	-0.57%	-10.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	9.11%	1.05%	+8.06%

Volatility

OARK vs. GMAR - Volatility Comparison

YieldMax Innovation Option Income Strategy ETF (OARK) has a higher volatility of 10.21% compared to FT Cboe Vest U.S. Equity Moderate Buffer ETF - March (GMAR) at 2.22%. This indicates that OARK's price experiences larger fluctuations and is considered to be riskier than GMAR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OARK	GMAR	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.21%	2.22%	+7.99%
Volatility (6M) Calculated over the trailing 6-month period	22.13%	2.87%	+19.26%
Volatility (1Y) Calculated over the trailing 1-year period	32.96%	8.50%	+24.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	31.12%	6.96%	+24.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	31.12%	6.96%	+24.16%