MMID vs. MFSM

Last updated Aug 5, 2026

MMID (MFS Active Mid Cap ETF) and MFSM (MFS Active Intermediate Muni Bond ETF) are both exchange-traded funds - MMID is a Mid Cap Blend Equities fund actively managed by MFS, while MFSM is a Municipal Bonds fund actively managed by MFS. Both are actively managed. Their 0.34 correlation means their historical movements had little consistent relationship. MMID charges 0.59%/yr vs 0.34%/yr for MFSM.

Performance

MMID vs. MFSM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MFS Active Mid Cap ETF (MMID) and MFS Active Intermediate Muni Bond ETF (MFSM). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MMID achieves a 9.93% return, which is significantly higher than MFSM's 0.95% return.

MMID

• 1D: 1.13%
• 1M: 3.37%
• 6M: 8.12%
• YTD: 9.93%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

MFSM

• 1D: 0.20%
• 1M: -1.40%
• 6M: 0.10%
• YTD: 0.95%
• 1Y: 4.91%
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: 3.00%

*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)
MFSM MFS Active Intermediate Muni Bond ETF	$564.46K	$466.13K	$441.40K
MMID MFS Active Mid Cap ETF	$6.06K	$8.30K	$14.37K

MMID vs. MFSM - Yearly Performance Comparison

	2026 (YTD)	2025
MMID MFS Active Mid Cap ETF	9.93%	0.62%
MFSM MFS Active Intermediate Muni Bond ETF	0.95%	1.85%

Correlation

The correlation between MMID and MFSM is 0.34, which is low. Their historical price movements had little consistent relationship.

	Correlation
Correlation (All Time) Calculated using the full available price history since Sep 24, 2025	0.34

Return for Risk

MMID vs. MFSM — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

MMID

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

MFSM

MFSM Risk / Return Rank: 63
MFSM Sharpe Ratio Rank: 71
MFSM Sortino Ratio Rank: 73
MFSM Omega Ratio Rank: 80
MFSM Calmar Ratio Rank: 46
MFSM Martin Ratio Rank: 47

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.

MMID vs. MFSM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Active Mid Cap ETF (MMID) and MFS Active Intermediate Muni Bond ETF (MFSM). 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.

	MMID	MFSM	Difference
Sharpe ratio: Return per unit of total volatility	—	1.86	—
Sortino ratio: Return per unit of downside risk	—	2.68	—
Omega ratio: Gain probability vs. loss probability	—	1.37	—
Calmar ratio: Return relative to maximum drawdown	—	1.86	—
Martin ratio: Return relative to average drawdown	—	6.13	—

Drawdowns

MMID vs. MFSM - Drawdown Comparison

The maximum MMID drawdown since its inception was -7.93%, which is greater than MFSM's maximum drawdown of -3.86%. Use the drawdown chart below to compare losses from any high point for MMID and MFSM.

Drawdown Indicators

	MMID	MFSM	Difference
Max Drawdown Largest peak-to-trough decline	-7.93%	-3.86%	-4.07%
Max Drawdown (1Y) Largest decline over 1 year	—	-2.65%	—
Current Drawdown Current decline from peak	0.00%	-1.53%	+1.53%
Average Drawdown Average peak-to-trough decline	-1.87%	-0.86%	-1.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.80%	—

Volatility

Volatility by Period

	MMID	MFSM	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.92%	—
Volatility (6M) Calculated over the trailing 6-month period	—	2.15%	—
Volatility (1Y) Calculated over the trailing 1-year period	13.19%	2.66%	+10.53%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.19%	3.38%	+9.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	13.19%	3.38%	+9.81%

MMID vs. MFSM - Expense Ratio Comparison

MMID has a 0.59% expense ratio, which is higher than MFSM's 0.34% expense ratio.

Dividends

MMID vs. MFSM - Dividend Comparison

MMID's dividend yield for the trailing twelve months is around 0.67%, less than MFSM's 3.61% yield.

Position	TTM	2025	2024
MFSM MFS Active Intermediate Muni Bond ETF	3.61%	3.53%	0.23%
MMID MFS Active Mid Cap ETF	0.67%	0.28%	0.00%

Frequently Asked Questions

Can I hold both MMID and MFSM in my portfolio?

MMID and MFSM have a correlation of 0.34, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, MMID or MFSM?

On fees, MFSM is cheaper at 0.34% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MMID or MFSM?

MFSM is cheaper with a 0.34% expense ratio, compared with 0.59% for MMID.

Which ETF pays a higher dividend yield, MMID or MFSM?

MFSM has the higher dividend yield at 3.61%, compared with 0.67% for MMID.

What is the main difference between MMID and MFSM?

MMID is categorized as Mid Cap Blend Equities, while MFSM is Municipal Bonds. Their fees differ too: 0.59% for MMID and 0.34% for MFSM.