NASA vs. MARS

Last updated Jun 16, 2026

NASA (Tema Space Innovators ETF) and MARS (Roundhill Space & Technology ETF) are both exchange-traded funds - NASA is a Aerospace & Defense fund actively managed by Tema, while MARS is a Technology Equities fund actively managed by Roundhill. Both are actively managed. With a 0.96 correlation, they move nearly in lockstep. Both charge a 0.75% expense ratio.

Performance

NASA vs. MARS - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Tema Space Innovators ETF (NASA) and Roundhill Space & Technology ETF (MARS). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

NASA

• 1D: 1.72%
• 1M: -5.88%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

MARS

• 1D: 2.21%
• 1M: -6.22%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

NASA vs. MARS - Yearly Performance Comparison

	2026 (YTD)
NASA Tema Space Innovators ETF	34.77%
MARS Roundhill Space & Technology ETF	42.98%

Correlation

The correlation between NASA and MARS is 0.96 - 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 31, 2026	0.96

Return for Risk

NASA vs. MARS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Tema Space Innovators ETF (NASA) and Roundhill Space & Technology ETF (MARS). 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.

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

Drawdowns

NASA vs. MARS - Drawdown Comparison

The maximum NASA drawdown since its inception was -25.42%, smaller than the maximum MARS drawdown of -28.38%. Use the drawdown chart below to compare losses from any high point for NASA and MARS.

Drawdown Indicators

	NASA	MARS	Difference
Max Drawdown Largest peak-to-trough decline	-25.42%	-28.38%	+2.96%
Current Drawdown Current decline from peak	-22.46%	-24.98%	+2.52%
Average Drawdown Average peak-to-trough decline	-5.71%	-5.76%	+0.05%

Volatility

Volatility by Period

	NASA	MARS	Difference
Volatility (1Y) Calculated over the trailing 1-year period	68.70%	68.56%	+0.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	68.70%	68.56%	+0.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	68.70%	68.56%	+0.14%

NASA vs. MARS - Expense Ratio Comparison

Both NASA and MARS have an expense ratio of 0.75%.

Dividends

NASA vs. MARS - Dividend Comparison

Neither NASA nor MARS has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both NASA and MARS in my portfolio?

With a correlation of 0.96, NASA and MARS 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, NASA or MARS?

Both ETFs have the same 0.75% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, NASA or MARS?

NASA and MARS have the same expense ratio: 0.75% per year.

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

NASA and MARS have nearly identical dividend yields, around 0.00%.

What is the main difference between NASA and MARS?

NASA is categorized as Aerospace & Defense, while MARS is Technology Equities. They also come from different issuers: Tema and Roundhill.