BBMUX Performance — Bridge Builder Municipal Bond Fund
Data updated: 2026-09-11
BBMUX returned +1.93% year to date and +6.30% over one year to Jun 2026. Annualised returns are +4.27% over 3 years and +1.51% over 5 years. The fund beat its Intermediate Municipal Bond category average: $100 invested three years ago grew to $113, against $111 for the category, and to $106 over one year, against $106. Volatility over the past three years was 4.36% a year. In the 12 months to Jun 2026 the fund took in a net $3.1B, and assets reached $20.79B.
BBMUX Growth of $100
What $100 invested in Bridge Builder 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 | BBMUX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $106 | $106 |
| 3 years (Jul 2023 – Jun 2026) | $113 | $111 |
| 5 years (Jul 2021 – Jun 2026) | $108 | $105 |
| Since data start (Jul 2019 – Jun 2026) | $117 | $112 |
BBMUX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +1.93% |
| 1 year | +6.30% |
| 3 years (annualised) | +4.27% |
| 5 years (annualised) | +1.51% |
BBMUX Annual Returns
Calendar-year total returns of Bridge Builder Municipal Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +1.93% |
| 2025 | +5.09% |
| 2024 | +2.09% |
| 2023 | +6.37% |
| 2022 | −7.67% |
| 2021 | +2.05% |
| 2020 | +4.18% |
| 2019 (Jul–Dec) | +2.13% |
BBMUX 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% | +1.2% | −2.2% | +1.0% | +0.4% | +0.6% | — | — | — | — | — | — |
| 2025 | +0.6% | +1.0% | −1.4% | −0.4% | +0.2% | +0.8% | 0.0% | +0.8% | +1.8% | +1.0% | +0.3% | +0.2% |
| 2024 | −0.1% | +0.2% | +0.1% | −0.7% | −0.2% | +1.3% | +0.8% | +0.8% | +0.9% | −1.2% | +1.3% | −0.9% |
| 2023 | +2.7% | −1.9% | +1.7% | −0.1% | −0.7% | +0.9% | +0.4% | −0.8% | −2.0% | −0.8% | +4.9% | +2.1% |
| 2022 | −2.4% | −0.5% | −2.7% | −2.4% | +1.3% | −1.6% | +2.4% | −1.9% | −3.3% | −0.7% | +4.1% | +0.1% |
| 2021 | +0.7% | −1.2% | +0.5% | +0.8% | +0.4% | +0.3% | +0.6% | −0.2% | −0.7% | −0.2% | +0.8% | +0.1% |
| 2020 | +1.5% | +1.0% | −4.5% | −1.4% | +2.7% | +1.5% | +1.4% | 0.0% | 0.0% | 0.0% | +1.2% | +0.8% |
| 2019 | — | — | — | — | — | — | +0.8% | +1.3% | −0.5% | +0.1% | +0.2% | +0.3% |
BBMUX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 4.36%
- 3-year Sharpe ratio: -0.05 (vs 4.5% risk-free rate)
- Best month: +4.85% (Nov 2023)
- Worst month: −2.25% (Mar 2026)
BBMUX Fund Flows
Monthly money in and out of Bridge Builder Municipal Bond Fund, from SEC Form N-PORT.
- 12-month net flow: $3.1B
- 12-month gross sales (incl. reinvestments): $7.0B
- Sales ÷ redemptions: 1.79×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $718.3M | $246.5M | $471.7M |
| May 2026 | $573.4M | $462.4M | $111.0M |
| Apr 2026 | $709.5M | $863.2M | −$153.7M |
| Mar 2026 | $583.8M | $290.8M | $293.0M |
| Feb 2026 | $563.8M | $185.1M | $378.7M |
| Jan 2026 | $559.5M | $179.8M | $379.7M |
| Dec 2025 | $558.2M | $193.7M | $364.5M |
| Nov 2025 | $449.1M | $221.1M | $228.0M |
| Oct 2025 | $558.7M | $417.4M | $141.3M |
| Sep 2025 | $511.7M | $169.6M | $342.2M |
| Aug 2025 | $498.7M | $196.6M | $302.1M |
| Jul 2025 | $718.0M | $488.0M | $230.0M |
BBMUX Assets Under Management
Net assets of Bridge Builder Municipal Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $20.79B |
| 2026-03-31 | $20.14B |
| 2025-12-31 | $19.29B |
| 2025-09-30 | $18.44B |
| 2025-06-30 | $17.25B |
| 2025-03-31 | $16.64B |
| 2024-12-31 | $15.90B |
| 2024-09-30 | $15.41B |
| 2024-06-30 | $14.53B |
| 2024-03-31 | $13.67B |
| 2023-12-31 | $12.79B |
| 2023-09-30 | $11.73B |
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.