BRSM vs. MFSM

Last updated Jul 8, 2026

BRSM (MFS Blended Research Small-Mid Cap ETF) and MFSM (MFS Active Intermediate Muni Bond ETF) are both exchange-traded funds - BRSM 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. A 0.59 correlation means they provide meaningful diversification when combined. BRSM charges 0.38%/yr vs 0.34%/yr for MFSM.

Performance

BRSM vs. MFSM - Performance Comparison

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

Returns By Period

BRSM

• 1D: -0.82%
• 1M: 5.09%
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

MFSM

• 1D: -0.24%
• 1M: 0.53%
• 6M: 2.11%
• YTD: 2.27%
• 1Y: 6.82%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

BRSM vs. MFSM - Yearly Performance Comparison

	2026 (YTD)
BRSM MFS Blended Research Small-Mid Cap ETF	2.65%
MFSM MFS Active Intermediate Muni Bond ETF	0.53%

Correlation

The correlation between BRSM and MFSM is 0.59, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since Jun 4, 2026	0.59

Return for Risk

BRSM vs. MFSM — Risk / Return Rank

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

BRSM

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

MFSM

MFSM Risk / Return Rank: 81
MFSM Sharpe Ratio Rank: 92
MFSM Sortino Ratio Rank: 94
MFSM Omega Ratio Rank: 94
MFSM Calmar Ratio Rank: 63
MFSM Martin Ratio Rank: 65

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.

BRSM vs. MFSM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MFS Blended Research Small-Mid Cap ETF (BRSM) 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.

	BRSM	MFSM	Difference
Sharpe ratio: Return per unit of total volatility	—	2.62	—
Sortino ratio: Return per unit of downside risk	—	3.97	—
Omega ratio: Gain probability vs. loss probability	—	1.56	—
Calmar ratio: Return relative to maximum drawdown	—	2.59	—
Martin ratio: Return relative to average drawdown	—	9.54	—

Drawdowns

BRSM vs. MFSM - Drawdown Comparison

The maximum BRSM drawdown since its inception was -3.25%, smaller than the maximum MFSM drawdown of -3.86%. Use the drawdown chart below to compare losses from any high point for BRSM and MFSM.

Drawdown Indicators

	BRSM	MFSM	Difference
Max Drawdown Largest peak-to-trough decline	-3.25%	-3.86%	+0.61%
Max Drawdown (1Y) Largest decline over 1 year	—	-2.65%	—
Current Drawdown Current decline from peak	-1.52%	-0.24%	-1.28%
Average Drawdown Average peak-to-trough decline	-0.89%	-0.85%	-0.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	0.72%	—

Volatility

Volatility by Period

	BRSM	MFSM	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	0.62%	—
Volatility (6M) Calculated over the trailing 6-month period	—	2.03%	—
Volatility (1Y) Calculated over the trailing 1-year period	19.99%	2.62%	+17.37%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.99%	3.38%	+16.61%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.99%	3.38%	+16.61%

BRSM vs. MFSM - Expense Ratio Comparison

BRSM has a 0.38% expense ratio, which is higher than MFSM's 0.34% expense ratio.

Dividends

BRSM vs. MFSM - Dividend Comparison

BRSM has not paid dividends to shareholders, while MFSM's dividend yield for the trailing twelve months is around 3.55%.

Position	TTM	2025	2024
BRSM MFS Blended Research Small-Mid Cap ETF	0.00%	0.00%	0.00%
MFSM MFS Active Intermediate Muni Bond ETF	3.55%	3.53%	0.23%

Frequently Asked Questions

Can I hold both BRSM and MFSM in my portfolio?

BRSM and MFSM have a correlation of 0.59, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, BRSM 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, BRSM or MFSM?

MFSM is cheaper with a 0.34% expense ratio, compared with 0.38% for BRSM.

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

MFSM has the higher dividend yield at 3.55%, compared with 0.00% for BRSM.

What is the main difference between BRSM and MFSM?

BRSM is categorized as Mid Cap Blend Equities, while MFSM is Municipal Bonds. Their fees differ too: 0.38% for BRSM and 0.34% for MFSM.