MMKT vs. MMK

Last updated Aug 4, 2026

MMKT (Texas Capital Government Money Market ETF) and MMK (State Street Prime Money Market ETF) are both Money Market funds. Both are actively managed. Their 0.43 correlation means their historical movements had little consistent relationship. MMKT charges 0.20%/yr vs 0.18%/yr for MMK.

Performance

MMKT vs. MMK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Texas Capital Government Money Market ETF (MMKT) and State Street Prime Money Market ETF (MMK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

MMKT

• 1D: 0.02%
• 1M: 0.30%
• 6M: 1.75%
• YTD: 2.05%
• 1Y: 3.72%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 4.01%

MMK

• 1D: 0.01%
• 1M: 0.30%
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
MMK State Street Prime Money Market ETF	$170.80K	$216.85K	$200.64K
MMKT Texas Capital Government Money Market ETF	$508.57K	$519.13K	$740.73K

MMKT vs. MMK - Yearly Performance Comparison

	2026 (YTD)
MMKT Texas Capital Government Money Market ETF	1.65%
MMK State Street Prime Money Market ETF	1.71%

Correlation

The correlation between MMKT and MMK is 0.43, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (All Time) Calculated using the full available price history since Feb 12, 2026	0.43

Return for Risk

MMKT vs. MMK — Risk / Return Rank

Compare historical risk-adjusted metric ranks 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

MMK

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

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

MMKT vs. MMK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Texas Capital Government Money Market ETF (MMKT) and State Street Prime Money Market ETF (MMK). 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	MMK	Difference
Sharpe ratio: Return per unit of total volatility	17.13	—	—
Sortino ratio: Return per unit of downside risk	65.58	—	—
Omega ratio: Gain probability vs. loss probability	17.69	—	—
Calmar ratio: Return relative to maximum drawdown	149.89	—	—
Martin ratio: Return relative to average drawdown	940.27	—	—

Drawdowns

MMKT vs. MMK - Drawdown Comparison

The maximum MMKT drawdown since its inception was -0.04%, which is greater than MMK's maximum drawdown of -0.01%. Use the drawdown chart below to compare losses from any high point for MMKT and MMK.

Drawdown Indicators

	MMKT	MMK	Difference
Max Drawdown Largest peak-to-trough decline	-0.04%	-0.01%	-0.03%
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%	0.00%	0.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.00%	—	—

Volatility

Volatility by Period

	MMKT	MMK	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.06%	—	—
Volatility (6M) Calculated over the trailing 6-month period	0.13%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	0.22%	0.18%	+0.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	0.23%	0.18%	+0.05%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	0.23%	0.18%	+0.05%

MMKT vs. MMK - Expense Ratio Comparison

MMKT has a 0.20% expense ratio, which is higher than MMK's 0.18% 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. MMK - Dividend Comparison

MMKT's dividend yield for the trailing twelve months is around 3.65%, more than MMK's 1.68% yield.

Position	TTM	2025	2024
MMK State Street Prime Money Market ETF	1.68%	0.00%	0.00%
MMKT Texas Capital Government Money Market ETF	3.65%	3.98%	1.07%

Frequently Asked Questions

Can I hold both MMKT and MMK in my portfolio?

MMKT and MMK have a correlation of 0.43, 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 MMK?

On fees, MMK is cheaper at 0.18% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MMKT or MMK?

MMK is cheaper with a 0.18% expense ratio, compared with 0.20% for MMKT.

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

MMKT has the higher dividend yield at 3.65%, compared with 1.68% for MMK.

What is the main difference between MMKT and MMK?

They also come from different issuers: Texas Capital and State Street. Their fees differ too: 0.20% for MMKT and 0.18% for MMK.