BBIIX Performance — BBH Intermediate Municipal Bond Fund, Class I
Data updated: 2026-09-25
BBIIX returned +0.60% year to date and +4.56% over one year to Jul 2026. Annualised returns are +3.97% over 3 years and +1.49% over 5 years. The fund beat its Intermediate Municipal Bond category average: $100 invested three years ago grew to $112, against $109 for the category, and to $105 over one year, against $105. Volatility over the past three years was 4.33% a year. In the 12 months to Jul 2026 the fund took in a net $923.5M, and assets reached $2.61B.
BBIIX Growth of $100
What $100 invested in BBH Intermediate Municipal Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Municipal Bond category average over the same months.
| Period | BBIIX | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $105 | $105 |
| 3 years (Aug 2023 – Jul 2026) | $112 | $109 |
| 5 years (Aug 2021 – Jul 2026) | $108 | $102 |
| Since data start (Aug 2019 – Jul 2026) | $115 | $109 |
BBIIX Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.60% |
| 1 year | +4.56% |
| 3 years (annualised) | +3.97% |
| 5 years (annualised) | +1.49% |
BBIIX Annual Returns
Calendar-year total returns of BBH Intermediate Municipal Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | +0.60% |
| 2025 | +5.43% |
| 2024 | +2.42% |
| 2023 | +6.09% |
| 2022 | −6.03% |
| 2021 | +0.23% |
| 2020 | +5.12% |
| 2019 (Aug–Dec) | +1.05% |
BBIIX Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +1.0% | +1.1% | −1.9% | +0.9% | +0.4% | +0.5% | −1.3% | — | — | — | — | — |
| 2025 | +0.5% | +1.1% | −1.1% | −0.3% | +0.2% | +0.9% | +0.1% | +0.8% | +1.6% | +0.9% | +0.3% | +0.3% |
| 2024 | −0.1% | +0.2% | +0.2% | −0.8% | −0.3% | +1.5% | +0.8% | +0.9% | +0.9% | −1.2% | +1.2% | −0.9% |
| 2023 | +2.5% | −1.9% | +1.9% | −0.1% | −0.8% | +0.8% | +0.3% | −0.6% | −2.2% | −0.6% | +4.8% | +2.2% |
| 2022 | −2.3% | −0.5% | −2.7% | −2.1% | +1.5% | −1.2% | +2.5% | −2.0% | −3.3% | −0.5% | +3.9% | +0.6% |
| 2021 | +0.4% | −1.3% | +0.3% | +0.6% | +0.1% | +0.2% | +0.6% | −0.2% | −0.7% | −0.2% | +0.4% | +0.1% |
| 2020 | +1.6% | +1.0% | −2.7% | −0.9% | +2.9% | +0.6% | +1.4% | −0.1% | +0.2% | −0.3% | +0.9% | +0.5% |
| 2019 | — | — | — | — | — | — | — | +1.1% | −0.8% | +0.2% | +0.2% | +0.4% |
BBIIX Risk
Risk measures from monthly returns over Aug 2023 – Jul 2026.
- 3-year volatility (annualised): 4.33%
- 3-year Sharpe ratio: -0.12 (vs 4.5% risk-free rate)
- Best month: +4.83% (Nov 2023)
- Worst month: −2.21% (Sep 2023)
BBIIX Fund Flows
Monthly money in and out of BBH Intermediate Municipal Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $923.5M
- 12-month gross sales (incl. reinvestments): $1.3B
- Sales ÷ redemptions: 3.77×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $86.1M | $30.8M | $55.3M |
| Jun 2026 | $107.4M | $70.3M | $37.1M |
| May 2026 | $188.8M | $25.9M | $162.9M |
| Apr 2026 | $102.6M | $42.7M | $59.9M |
| Mar 2026 | $118.8M | $26.8M | $92.1M |
| Feb 2026 | $104.8M | $18.8M | $86.0M |
| Jan 2026 | $108.8M | $44.7M | $64.1M |
| Dec 2025 | $76.3M | $14.9M | $61.3M |
| Nov 2025 | $51.5M | $9.2M | $42.4M |
| Oct 2025 | $79.2M | $15.1M | $64.2M |
| Sep 2025 | $104.5M | $16.7M | $87.8M |
| Aug 2025 | $128.2M | $17.8M | $110.4M |
BBIIX Assets Under Management
Net assets of BBH Intermediate Municipal Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $2.61B |
| 2026-04-30 | $2.39B |
| 2026-01-31 | $2.17B |
| 2025-10-31 | $1.98B |
| 2025-07-31 | $1.68B |
| 2025-04-30 | $1.47B |
| 2025-01-31 | $1.36B |
| 2024-10-31 | $1.24B |
| 2024-07-31 | $1.09B |
| 2024-04-30 | $970.72M |
| 2024-01-31 | $863.93M |
| 2023-10-31 | $746.86M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.