MMKT vs. XBOX

Last updated Jul 21, 2026

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

Performance

MMKT vs. XBOX - Performance Comparison

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

Returns By Period

MMKT

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

XBOX

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

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

MMKT vs. XBOX - Yearly Performance Comparison

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

Correlation

The correlation between MMKT and XBOX 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

MMKT vs. XBOX — Risk / Return Rank

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

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

XBOX

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

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.

MMKT vs. XBOX - Risk-Adjusted Trends Comparison

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

	MMKT	XBOX	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

MMKT vs. XBOX - Drawdown Comparison

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

Drawdown Indicators

	MMKT	XBOX	Difference
Max Drawdown Largest peak-to-trough decline	-0.04%	-0.83%	+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	-0.00%	-0.08%	+0.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.00%	—	—

Volatility

Volatility by Period

	MMKT	XBOX	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	0.22%	2.04%	-1.82%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.23%	2.04%	-1.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.23%	2.04%	-1.81%

MMKT vs. XBOX - Expense Ratio Comparison

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

Dividends

MMKT vs. XBOX - Dividend Comparison

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

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 MMKT and XBOX in my portfolio?

MMKT and XBOX 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, MMKT or XBOX?

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, MMKT or XBOX?

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

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

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

What is the main difference between MMKT and XBOX?

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