BBBIX vs. BBBMX

Last updated Jun 5, 2026

BBBIX (BBH Limited Duration Fund) and BBBMX (BBH Limited Duration Fund Class N) are both Ultrashort Bond funds from BBH. Over the past 10 years, BBBIX returned 3.46%/yr vs 3.36%/yr for BBBMX. A 0.69 correlation means they provide meaningful diversification when combined. BBBIX charges 0.27%/yr vs 0.35%/yr for BBBMX.

Performance

BBBIX vs. BBBMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BBH Limited Duration Fund (BBBIX) and BBH Limited Duration Fund Class N (BBBMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BBBIX achieves a 1.45% return, which is significantly higher than BBBMX's 1.32% return. Both investments have delivered pretty close results over the past 10 years, with BBBIX having a 3.46% annualized return and BBBMX not far behind at 3.36%.

BBBIX

• 1D: 0.00%
• 1M: 0.35%
• YTD: 1.45%
• 6M: 1.87%
• 1Y: 4.70%
• 3Y*: 6.31%
• 5Y*: 4.00%
• 10Y*: 3.46%

BBBMX

• 1D: 0.00%
• 1M: 0.25%
• YTD: 1.32%
• 6M: 1.73%
• 1Y: 4.62%
• 3Y*: 6.23%
• 5Y*: 3.91%
• 10Y*: 3.36%

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

BBBIX vs. BBBMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BBBIX BBH Limited Duration Fund	1.45%	5.62%	6.79%	7.63%	-1.42%	1.06%	2.85%	4.39%	2.07%	2.51%
BBBMX BBH Limited Duration Fund Class N	1.32%	5.54%	6.81%	7.44%	-1.48%	1.10%	2.78%	4.30%	1.99%	2.31%

Correlation

The correlation between BBBIX and BBBMX is 0.38, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.38
Correlation (3Y) Calculated over the trailing 3-year period	0.47
Correlation (5Y) Calculated over the trailing 5-year period	0.52
Correlation (10Y) Calculated over the trailing 10-year period	0.42
Correlation (All Time) Calculated using the full available price history since Jul 21, 2000	0.69

Over the past year, the correlation between BBBIX and BBBMX has dropped to 0.38 - well below their long-term average of 0.69, suggesting their price drivers have been diverging.

Return for Risk

BBBIX vs. BBBMX — Risk / Return Rank

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

BBBIX

BBBIX Risk / Return Rank: 97
BBBIX Sharpe Ratio Rank: 91
BBBIX Sortino Ratio Rank: 99
BBBIX Omega Ratio Rank: 98
BBBIX Calmar Ratio Rank: 98
BBBIX Martin Ratio Rank: 98

BBBMX

BBBMX Risk / Return Rank: 96
BBBMX Sharpe Ratio Rank: 88
BBBMX Sortino Ratio Rank: 99
BBBMX Omega Ratio Rank: 99
BBBMX Calmar Ratio Rank: 98
BBBMX Martin Ratio Rank: 99

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.

BBBIX vs. BBBMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BBH Limited Duration Fund (BBBIX) and BBH Limited Duration Fund Class N (BBBMX). 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.

	BBBIX	BBBMX	Difference
Sharpe ratio: Return per unit of total volatility	3.07	2.87	+0.20
Sortino ratio: Return per unit of downside risk	8.23	8.28	-0.06
Omega ratio: Gain probability vs. loss probability	2.37	2.54	-0.16
Calmar ratio: Return relative to maximum drawdown	8.41	8.10	+0.31
Martin ratio: Return relative to average drawdown	35.12	39.41	-4.29
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BBBIX vs. BBBMX - Sharpe Ratio Comparison

The current BBBIX Sharpe Ratio is 3.07, which is comparable to the BBBMX Sharpe Ratio of 2.87. The chart below compares the historical Sharpe Ratios of BBBIX and BBBMX, 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

	BBBIX	BBBMX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.07	2.87	+0.20
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.60	2.51	+0.09
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	2.35	2.28	+0.07
Sharpe Ratio (All Time) Calculated using the full available price history	1.48	1.22	+0.26

Drawdowns

BBBIX vs. BBBMX - Drawdown Comparison

The maximum BBBIX drawdown since its inception was -6.60%, roughly equal to the maximum BBBMX drawdown of -6.50%. Use the drawdown chart below to compare losses from any high point for BBBIX and BBBMX.

Drawdown Indicators

	BBBIX	BBBMX	Difference
Max Drawdown Largest peak-to-trough decline	-6.60%	-6.50%	-0.10%
Max Drawdown (1Y) Largest decline over 1 year	-0.57%	-0.57%	0.00%
Max Drawdown (3Y) Largest decline over 3 years	-0.57%	-0.57%	0.00%
Max Drawdown (5Y) Largest decline over 5 years	-3.16%	-3.18%	+0.02%
Max Drawdown (10Y) Largest decline over 10 years	-6.60%	-6.50%	-0.10%
Current Drawdown Current decline from peak	0.00%	-0.10%	+0.10%
Average Drawdown Average peak-to-trough decline	-0.46%	-0.57%	+0.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.14%	0.12%	+0.02%

Volatility

BBBIX vs. BBBMX - Volatility Comparison

The current volatility for BBH Limited Duration Fund (BBBIX) is 0.43%, while BBH Limited Duration Fund Class N (BBBMX) has a volatility of 0.52%. This indicates that BBBIX experiences smaller price fluctuations and is considered to be less risky than BBBMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BBBIX	BBBMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.43%	0.52%	-0.09%
Volatility (6M) Calculated over the trailing 6-month period	1.03%	1.21%	-0.18%
Volatility (1Y) Calculated over the trailing 1-year period	1.56%	1.61%	-0.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.55%	1.56%	-0.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.47%	1.48%	-0.01%

BBBIX vs. BBBMX - Expense Ratio Comparison

BBBIX has a 0.27% expense ratio, which is lower than BBBMX's 0.35% expense ratio.

Dividends

BBBIX vs. BBBMX - Dividend Comparison

BBBIX's dividend yield for the trailing twelve months is around 4.60%, more than BBBMX's 4.52% yield.

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%
BBBMX BBH Limited Duration Fund Class N	4.52%	4.60%	4.80%	4.23%	1.78%	1.29%	2.03%	2.93%	2.57%	1.99%	2.00%	1.72%

Frequently Asked Questions

Can I hold both BBBIX and BBBMX in my portfolio?

BBBIX and BBBMX have a correlation of 0.38, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BBBIX or BBBMX?

BBBMX has higher volatility (0.52%) compared to BBBIX (0.43%). In terms of maximum drawdown, BBBIX dropped -6.60% vs BBBMX's -6.50%.

Which has better risk-adjusted returns?

BBBIX currently has the higher Sharpe Ratio (3.07 vs 2.87), 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.