XBOX vs. MMKT

Last updated Jul 21, 2026

XBOX (Roundhill Ultra Short Duration No Dividend Target ETF) and MMKT (Texas Capital Government Money Market ETF) are both exchange-traded funds - XBOX is a Ultrashort Bond fund actively managed by Roundhill, while MMKT is a Money Market fund actively managed by Texas Capital. Both are actively managed. At a 0.30 correlation, their price movements are largely independent. XBOX charges 0.14%/yr vs 0.20%/yr for MMKT.

Performance

XBOX vs. MMKT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Roundhill Ultra Short Duration No Dividend Target ETF (XBOX) and Texas Capital Government Money Market ETF (MMKT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

XBOX

• 1D: 0.00%
• 1M: 0.32%
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

MMKT

• 1D: 0.01%
• 1M: 0.27%
• 6M: 1.73%
• YTD: 1.89%
• 1Y: 3.74%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 4.01%

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

XBOX vs. MMKT - Yearly Performance Comparison

	2026 (YTD)
XBOX Roundhill Ultra Short Duration No Dividend Target ETF	1.29%
MMKT Texas Capital Government Money Market ETF	1.18%

Correlation

The correlation between XBOX and MMKT is 0.30, 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 Mar 18, 2026	0.30

Return for Risk

XBOX vs. MMKT — Risk / Return Rank

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

XBOX

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

MMKT

MMKT Risk / Return Rank: 100
MMKT Sharpe Ratio Rank: 100
MMKT Sortino Ratio Rank: 100
MMKT Omega Ratio Rank: 100
MMKT Calmar Ratio Rank: 100
MMKT Martin Ratio Rank: 100

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.

XBOX vs. MMKT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Roundhill Ultra Short Duration No Dividend Target ETF (XBOX) and Texas Capital Government Money Market ETF (MMKT). 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.

	XBOX	MMKT	Difference
Sharpe ratio: Return per unit of total volatility	—	16.79	—
Sortino ratio: Return per unit of downside risk	—	62.64	—
Omega ratio: Gain probability vs. loss probability	—	16.03	—
Calmar ratio: Return relative to maximum drawdown	—	150.42	—
Martin ratio: Return relative to average drawdown	—	907.31	—

Drawdowns

XBOX vs. MMKT - Drawdown Comparison

The maximum XBOX drawdown since its inception was -0.83%, which is greater than MMKT's maximum drawdown of -0.04%. Use the drawdown chart below to compare losses from any high point for XBOX and MMKT.

Drawdown Indicators

	XBOX	MMKT	Difference
Max Drawdown Largest peak-to-trough decline	-0.83%	-0.04%	-0.79%
Max Drawdown (1Y) Largest decline over 1 year	—	-0.02%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-0.08%	-0.00%	-0.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.00%	—

Volatility

Volatility by Period

	XBOX	MMKT	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.05%	—
Volatility (6M) Calculated over the trailing 6-month period	—	0.13%	—
Volatility (1Y) Calculated over the trailing 1-year period	2.04%	0.22%	+1.82%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.04%	0.23%	+1.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.04%	0.23%	+1.81%

XBOX vs. MMKT - Expense Ratio Comparison

XBOX has a 0.14% expense ratio, which is lower than MMKT's 0.20% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

XBOX vs. MMKT - Dividend Comparison

XBOX has not paid dividends to shareholders, while MMKT's dividend yield for the trailing twelve months is around 3.67%.

Position	TTM	2025	2024
MMKT Texas Capital Government Money Market ETF	3.67%	3.98%	1.07%
XBOX Roundhill Ultra Short Duration No Dividend Target ETF	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both XBOX and MMKT in my portfolio?

XBOX and MMKT have a correlation of 0.30, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, XBOX or MMKT?

On fees, XBOX is cheaper at 0.14% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, XBOX or MMKT?

XBOX is cheaper with a 0.14% expense ratio, compared with 0.20% for MMKT.

Which ETF pays a higher dividend yield, XBOX or MMKT?

MMKT has the higher dividend yield at 3.67%, compared with 0.00% for XBOX.

What is the main difference between XBOX and MMKT?

XBOX is categorized as Ultrashort Bond, while MMKT is Money Market. They also come from different issuers: Roundhill and Texas Capital. Their fees differ too: 0.14% for XBOX and 0.20% for MMKT.