MARS vs. DRAM

Last updated Jun 5, 2026

MARS (Roundhill Space & Technology ETF) and DRAM (Roundhill Memory ETF) are both Technology Equities funds from Roundhill. Both are actively managed. At a 0.28 correlation, their price movements are largely independent. MARS charges 0.75%/yr vs 0.65%/yr for DRAM.

Performance

MARS vs. DRAM - Performance Comparison

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

Returns By Period

MARS

• 1D: 3.41%
• 1M: 25.54%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

DRAM

• 1D: -5.75%
• 1M: 41.93%
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

MARS vs. DRAM - Yearly Performance Comparison

	2026 (YTD)
MARS Roundhill Space & Technology ETF	31.13%
DRAM Roundhill Memory ETF	136.67%

Correlation

The correlation between MARS and DRAM is 0.28, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (All Time) Calculated using the full available price history since Apr 6, 2026	0.28

Return for Risk

MARS vs. DRAM - Risk-Adjusted Trends Comparison

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

	MARS	DRAM	Difference
Sharpe Ratio (All Time) Calculated using the full available price history	7.25	207.21	-199.97

Drawdowns

MARS vs. DRAM - Drawdown Comparison

The maximum MARS drawdown since its inception was -19.50%, which is greater than DRAM's maximum drawdown of -10.46%. Use the drawdown chart below to compare losses from any high point for MARS and DRAM.

Drawdown Indicators

	MARS	DRAM	Difference
Max Drawdown Largest peak-to-trough decline	-19.50%	-10.46%	-9.04%
Current Drawdown Current decline from peak	-16.76%	-5.75%	-11.01%
Average Drawdown Average peak-to-trough decline	-3.52%	-1.74%	-1.78%

Volatility

Volatility by Period

	MARS	DRAM	Difference
Volatility (1Y) Calculated over the trailing 1-year period	62.61%	75.61%	-13.00%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	62.61%	75.61%	-13.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	62.61%	75.61%	-13.00%

MARS vs. DRAM - Expense Ratio Comparison

MARS has a 0.75% expense ratio, which is higher than DRAM's 0.65% expense ratio.

Dividends

MARS vs. DRAM - Dividend Comparison

Neither MARS nor DRAM has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both MARS and DRAM in my portfolio?

MARS and DRAM have a correlation of 0.28, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MARS or DRAM?

On fees, DRAM is cheaper at 0.65% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MARS or DRAM?

DRAM is cheaper with a 0.65% expense ratio, compared with 0.75% for MARS.

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

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

What is the main difference between MARS and DRAM?

Their fees differ too: 0.75% for MARS and 0.65% for DRAM.