BBMIX vs. BBIIX

Last updated Jun 24, 2026

BBMIX (BBH Select Series - Mid Cap Fund) and BBIIX (BBH Intermediate Municipal Bond Fund) are both mutual funds - BBMIX is a Mid Cap Growth Equities fund managed by BBH, while BBIIX is a Municipal Bonds fund managed by BBH. Over the past 5 years, BBMIX returned 2.80%/yr vs 1.65%/yr for BBIIX. At a 0.10 correlation, their price movements are largely independent. BBMIX charges 0.90%/yr vs 0.46%/yr for BBIIX.

Performance

BBMIX vs. BBIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BBH Select Series - Mid Cap Fund (BBMIX) and BBH Intermediate Municipal Bond Fund (BBIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BBMIX achieves a 2.86% return, which is significantly higher than BBIIX's 1.16% return.

BBMIX

• 1D: 0.00%
• 1M: 0.00%
• YTD: 2.86%
• 6M: 2.86%
• 1Y: -1.46%
• 3Y*: 6.50%
• 5Y*: 2.80%
• 10Y*: —

BBIIX

• 1D: -0.10%
• 1M: 0.78%
• YTD: 1.16%
• 6M: 1.59%
• 1Y: 5.90%
• 3Y*: 4.36%
• 5Y*: 1.65%
• 10Y*: 2.54%

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

BBMIX vs. BBIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
BBMIX BBH Select Series - Mid Cap Fund	2.86%	-6.45%	11.41%	26.01%	-24.76%	13.50%
BBIIX BBH Intermediate Municipal Bond Fund	1.16%	5.45%	2.43%	6.09%	-6.45%	0.31%

Correlation

The correlation between BBMIX and BBIIX is 0.08, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.08
Correlation (3Y) Calculated over the trailing 3-year period	0.11
Correlation (5Y) Calculated over the trailing 5-year period	0.10
Correlation (All Time) Calculated using the full available price history since May 24, 2021	0.10

Return for Risk

BBMIX vs. BBIIX — Risk / Return Rank

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

BBMIX

BBMIX Risk / Return Rank: 3
BBMIX Sharpe Ratio Rank: 3
BBMIX Sortino Ratio Rank: 3
BBMIX Omega Ratio Rank: 3
BBMIX Calmar Ratio Rank: 3
BBMIX Martin Ratio Rank: 3

BBIIX

BBIIX Risk / Return Rank: 72
BBIIX Sharpe Ratio Rank: 90
BBIIX Sortino Ratio Rank: 93
BBIIX Omega Ratio Rank: 96
BBIIX Calmar Ratio Rank: 43
BBIIX Martin Ratio Rank: 39

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.

BBMIX vs. BBIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BBH Select Series - Mid Cap Fund (BBMIX) and BBH Intermediate Municipal Bond Fund (BBIIX). 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.

	BBMIX	BBIIX	Difference
Sharpe ratio: Return per unit of total volatility	-0.01	2.76	-2.77
Sortino ratio: Return per unit of downside risk	0.07	4.43	-4.36
Omega ratio: Gain probability vs. loss probability	1.01	1.79	-0.78
Calmar ratio: Return relative to maximum drawdown	-0.01	2.42	-2.43
Martin ratio: Return relative to average drawdown	-0.02	7.96	-7.98

BBMIX vs. BBIIX - Sharpe Ratio Comparison

The current BBMIX Sharpe Ratio is -0.01, which is lower than the BBIIX Sharpe Ratio of 2.76. The chart below compares the historical Sharpe Ratios of BBMIX and BBIIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

BBMIX vs. BBIIX - Drawdown Comparison

The maximum BBMIX drawdown since its inception was -28.90%, which is greater than BBIIX's maximum drawdown of -11.53%. Use the drawdown chart below to compare losses from any high point for BBMIX and BBIIX.

Drawdown Indicators

	BBMIX	BBIIX	Difference
Max Drawdown Largest peak-to-trough decline	-28.90%	-11.53%	-17.37%
Max Drawdown (1Y) Largest decline over 1 year	-8.89%	-2.46%	-6.43%
Max Drawdown (3Y) Largest decline over 3 years	-23.79%	-3.92%	-19.87%
Max Drawdown (5Y) Largest decline over 5 years	-28.90%	-11.53%	-17.37%
Max Drawdown (10Y) Largest decline over 10 years	—	-11.53%	—
Current Drawdown Current decline from peak	-11.28%	-0.92%	-10.36%
Average Drawdown Average peak-to-trough decline	-10.51%	-1.69%	-8.82%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.30%	0.74%	+4.56%

Volatility

BBMIX vs. BBIIX - Volatility Comparison

The current volatility for BBH Select Series - Mid Cap Fund (BBMIX) is 0.00%, while BBH Intermediate Municipal Bond Fund (BBIIX) has a volatility of 0.48%. This indicates that BBMIX experiences smaller price fluctuations and is considered to be less risky than BBIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BBMIX	BBIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.00%	0.48%	-0.48%
Volatility (6M) Calculated over the trailing 6-month period	6.04%	1.71%	+4.33%
Volatility (1Y) Calculated over the trailing 1-year period	11.14%	2.16%	+8.98%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.70%	3.06%	+16.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.57%	3.25%	+16.32%

BBMIX vs. BBIIX - Expense Ratio Comparison

BBMIX has a 0.90% expense ratio, which is higher than BBIIX's 0.46% expense ratio.

Dividends

BBMIX vs. BBIIX - Dividend Comparison

BBMIX has not paid dividends to shareholders, while BBIIX's dividend yield for the trailing twelve months is around 3.28%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BBIIX BBH Intermediate Municipal Bond Fund	3.28%	3.60%	3.67%	3.09%	1.52%	1.20%	1.64%	2.69%	2.20%	3.64%	3.31%	2.00%
BBMIX BBH Select Series - Mid Cap Fund	0.00%	0.00%	0.32%	0.10%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BBMIX and BBIIX in my portfolio?

BBMIX and BBIIX have a correlation of 0.08, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BBMIX or BBIIX?

BBIIX has higher volatility (0.48%) compared to BBMIX (0.00%). In terms of maximum drawdown, BBMIX dropped -28.90% vs BBIIX's -11.53%.

Which has better risk-adjusted returns?

BBIIX currently has the higher Sharpe Ratio (2.76 vs -0.01), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.