BBMIX vs. BBBIX

Last updated Jun 3, 2026

BBMIX (BBH Select Series - Mid Cap Fund) and BBBIX (BBH Limited Duration Fund) are both mutual funds - BBMIX is a Mid Cap Growth Equities fund managed by BBH, while BBBIX is a Ultrashort Bond fund managed by BBH. Over the past 5 years, BBMIX returned 3.07%/yr vs 3.98%/yr for BBBIX. At a 0.15 correlation, their price movements are largely independent. BBMIX charges 0.90%/yr vs 0.27%/yr for BBBIX.

Performance

BBMIX vs. BBBIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BBH Select Series - Mid Cap Fund (BBMIX) and BBH Limited Duration Fund (BBBIX). 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 BBBIX's 1.45% return.

BBMIX

• 1D: 0.00%
• 1M: 0.00%
• YTD: 2.86%
• 6M: 2.86%
• 1Y: 2.22%
• 3Y*: 6.69%
• 5Y*: 3.07%
• 10Y*: —

BBBIX

• 1D: 0.00%
• 1M: 0.35%
• YTD: 1.45%
• 6M: 1.87%
• 1Y: 4.80%
• 3Y*: 6.31%
• 5Y*: 3.98%
• 10Y*: 3.46%

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

BBMIX vs. BBBIX - 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%
BBBIX BBH Limited Duration Fund	1.45%	5.62%	6.79%	7.63%	-1.42%	0.36%

Correlation

The correlation between BBMIX and BBBIX 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	0.14
Correlation (5Y) Calculated over the trailing 5-year period	0.15
Correlation (All Time) Calculated using the full available price history since May 25, 2021	0.15

Return for Risk

BBMIX vs. BBBIX — 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: 4
BBMIX Calmar Ratio Rank: 3
BBMIX Martin Ratio Rank: 3

BBBIX

BBBIX Risk / Return Rank: 97
BBBIX Sharpe Ratio Rank: 92
BBBIX Sortino Ratio Rank: 99
BBBIX Omega Ratio Rank: 98
BBBIX Calmar Ratio Rank: 98
BBBIX Martin Ratio Rank: 98

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. BBBIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BBH Select Series - Mid Cap Fund (BBMIX) and BBH Limited Duration Fund (BBBIX). 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.

	BBMIX	BBBIX	Difference
Sharpe ratio Return per unit of total volatility	0.18	3.07	-2.89
Sortino ratio Return per unit of downside risk	0.35	8.23	-7.88
Omega ratio Gain probability vs. loss probability	1.05	2.37	-1.32
Calmar ratio Return relative to maximum drawdown	0.02	8.41	-8.39
Martin ratio Return relative to average drawdown	0.06	35.12	-35.06
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BBMIX vs. BBBIX - Sharpe Ratio Comparison

The current BBMIX Sharpe Ratio is 0.18, which is lower than the BBBIX Sharpe Ratio of 3.07. The chart below compares the historical Sharpe Ratios of BBMIX and BBBIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	BBMIX	BBBIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.18	3.07	-2.89
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.16	2.58	-2.42
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	2.35	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.15	1.48	-1.33

Drawdowns

BBMIX vs. BBBIX - Drawdown Comparison

The maximum BBMIX drawdown since its inception was -28.90%, which is greater than BBBIX's maximum drawdown of -6.60%. Use the drawdown chart below to compare losses from any high point for BBMIX and BBBIX.

Drawdown Indicators

	BBMIX	BBBIX	Difference
Max Drawdown Largest peak-to-trough decline	-28.90%	-6.60%	-22.30%
Max Drawdown (1Y) Largest decline over 1 year	-8.89%	-0.57%	-8.32%
Max Drawdown (3Y) Largest decline over 3 years	-23.79%	-0.57%	-23.22%
Max Drawdown (5Y) Largest decline over 5 years	-28.90%	-3.16%	-25.74%
Max Drawdown (10Y) Largest decline over 10 years	—	-6.60%	—
Current Drawdown Current decline from peak	-11.28%	0.00%	-11.28%
Average Drawdown Average peak-to-trough decline	-10.51%	-0.46%	-10.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.67%	0.14%	+5.53%

Volatility

BBMIX vs. BBBIX - Volatility Comparison

The current volatility for BBH Select Series - Mid Cap Fund (BBMIX) is 0.00%, while BBH Limited Duration Fund (BBBIX) has a volatility of 0.43%. This indicates that BBMIX experiences smaller price fluctuations and is considered to be less risky than BBBIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BBMIX	BBBIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.00%	0.43%	-0.43%
Volatility (6M) Calculated over the trailing 6-month period	6.37%	1.09%	+5.28%
Volatility (1Y) Calculated over the trailing 1-year period	11.64%	1.57%	+10.07%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.73%	1.55%	+18.18%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.69%	1.47%	+18.22%

BBMIX vs. BBBIX - Expense Ratio Comparison

BBMIX has a 0.90% expense ratio, which is higher than BBBIX's 0.27% expense ratio.

Dividends

BBMIX vs. BBBIX - Dividend Comparison

BBMIX has not paid dividends to shareholders, while BBBIX's dividend yield for the trailing twelve months is around 4.60%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BBBIX BBH Limited Duration Fund	4.60%	4.68%	4.88%	4.31%	1.84%	1.35%	2.09%	3.01%	2.66%	2.09%	2.23%	2.08%
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 BBBIX in my portfolio?

BBMIX and BBBIX 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 BBBIX?

BBBIX has higher volatility (0.43%) compared to BBMIX (0.00%). In terms of maximum drawdown, BBMIX dropped -28.90% vs BBBIX's -6.60%.

Which has better risk-adjusted returns?

BBBIX currently has the higher Sharpe Ratio (3.07 vs 0.18), 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.