MARS vs. ROKT

Last updated Jun 24, 2026

MARS (Roundhill Space & Technology ETF) and ROKT (SPDR S&P Kensho Final Frontiers ETF) are both exchange-traded funds - MARS is a Technology Equities fund actively managed by Roundhill, while ROKT is a Industrials Equities fund tracking the S&P Kensho Final Frontiers Index. MARS is actively managed, while ROKT is passively managed. With a 0.95 correlation, they move nearly in lockstep. MARS charges 0.75%/yr vs 0.45%/yr for ROKT.

Performance

MARS vs. ROKT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Roundhill Space & Technology ETF (MARS) and SPDR S&P Kensho Final Frontiers ETF (ROKT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

MARS

• 1D: -2.21%
• 1M: -26.92%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

ROKT

• 1D: -1.14%
• 1M: -9.09%
• YTD: 34.05%
• 6M: 30.35%
• 1Y: 84.29%
• 3Y*: 39.88%
• 5Y*: 22.35%
• 10Y*: —

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

MARS vs. ROKT - Yearly Performance Comparison

	2026 (YTD)
MARS Roundhill Space & Technology ETF	18.29%
ROKT SPDR S&P Kensho Final Frontiers ETF	7.21%

Correlation

The correlation between MARS and ROKT is 0.95 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (All Time) Calculated using the full available price history since Mar 5, 2026	0.95

Return for Risk

MARS vs. ROKT — Risk / Return Rank

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

MARS

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

ROKT

ROKT Risk / Return Rank: 84
ROKT Sharpe Ratio Rank: 87
ROKT Sortino Ratio Rank: 80
ROKT Omega Ratio Rank: 75
ROKT Calmar Ratio Rank: 89
ROKT Martin Ratio Rank: 90

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.

MARS vs. ROKT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Roundhill Space & Technology ETF (MARS) and SPDR S&P Kensho Final Frontiers ETF (ROKT). 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.

	MARS	ROKT	Difference
Sharpe ratio: Return per unit of total volatility	—	2.72	—
Sortino ratio: Return per unit of downside risk	—	3.36	—
Omega ratio: Gain probability vs. loss probability	—	1.42	—
Calmar ratio: Return relative to maximum drawdown	—	5.10	—
Martin ratio: Return relative to average drawdown	—	19.54	—

Drawdowns

MARS vs. ROKT - Drawdown Comparison

The maximum MARS drawdown since its inception was -33.89%, smaller than the maximum ROKT drawdown of -43.16%. Use the drawdown chart below to compare losses from any high point for MARS and ROKT.

Drawdown Indicators

	MARS	ROKT	Difference
Max Drawdown Largest peak-to-trough decline	-33.89%	-43.16%	+9.27%
Max Drawdown (1Y) Largest decline over 1 year	—	-16.60%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-23.46%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-23.46%	—
Current Drawdown Current decline from peak	-33.89%	-16.60%	-17.29%
Average Drawdown Average peak-to-trough decline	-7.31%	-6.79%	-0.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	4.33%	—

Volatility

Volatility by Period

	MARS	ROKT	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	15.56%	—
Volatility (6M) Calculated over the trailing 6-month period	—	26.87%	—
Volatility (1Y) Calculated over the trailing 1-year period	67.75%	31.19%	+36.56%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	67.75%	23.36%	+44.39%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	67.75%	25.41%	+42.34%

MARS vs. ROKT - Expense Ratio Comparison

MARS has a 0.75% expense ratio, which is higher than ROKT's 0.45% expense ratio.

Dividends

MARS vs. ROKT - Dividend Comparison

MARS has not paid dividends to shareholders, while ROKT's dividend yield for the trailing twelve months is around 0.27%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
MARS Roundhill Space & Technology ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
ROKT SPDR S&P Kensho Final Frontiers ETF	0.27%	0.41%	0.57%	0.62%	0.54%	1.79%	0.48%	0.74%	0.16%

Frequently Asked Questions

Can I hold both MARS and ROKT in my portfolio?

With a correlation of 0.95, MARS and ROKT move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which ETF is better, MARS or ROKT?

On fees, ROKT is cheaper at 0.45% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MARS or ROKT?

ROKT is cheaper with a 0.45% expense ratio, compared with 0.75% for MARS.

Which ETF pays a higher dividend yield, MARS or ROKT?

ROKT has the higher dividend yield at 0.27%, compared with 0.00% for MARS.

What is the main difference between MARS and ROKT?

MARS is categorized as Technology Equities, while ROKT is Industrials Equities. They also come from different issuers: Roundhill and State Street. Their fees differ too: 0.75% for MARS and 0.45% for ROKT.