BASBX Performance — Brown Advisory Sustainable Bond Fund, Investor Shares
Data updated: 2026-09-11
BASBX returned +0.65% year to date and +3.49% over one year to Jun 2026. Annualised returns are +3.65% over 3 years and −0.55% over 5 years. The fund trailed its Intermediate Core Bond category average: $100 invested three years ago grew to $111, against $115 for the category, and to $103 over one year, against $104. Volatility over the past three years was 5.60% a year. In the 12 months to Jun 2026 the fund lost a net $37.3M, and assets reached $536.66M.
BASBX Growth of $100
What $100 invested in Brown Advisory Sustainable Bond Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Core Bond category average over the same months.
| Period | BASBX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $103 | $104 |
| 3 years (Jul 2023 – Jun 2026) | $111 | $115 |
| 5 years (Jul 2021 – Jun 2026) | $97 | $102 |
| Since data start (Jul 2019 – Jun 2026) | $108 | $112 |
BASBX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.65% |
| 1 year | +3.49% |
| 3 years (annualised) | +3.65% |
| 5 years (annualised) | −0.55% |
BASBX Annual Returns
Calendar-year total returns of Brown Advisory Sustainable Bond Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +0.65% |
| 2025 | +6.83% |
| 2024 | +0.95% |
| 2023 | +3.41% |
| 2022 | −13.46% |
| 2021 | −0.42% |
| 2020 | +8.85% |
| 2019 (Jul–Dec) | +2.22% |
BASBX 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 | +0.3% | +1.6% | −1.9% | +0.1% | +0.3% | +0.2% | — | — | — | — | — | — |
| 2025 | +0.6% | +2.1% | −0.1% | +0.3% | −0.6% | +1.5% | −0.3% | +1.2% | +1.1% | +0.5% | +0.7% | −0.3% |
| 2024 | −0.4% | −1.4% | +0.9% | −2.6% | +1.7% | +0.9% | +2.2% | +1.5% | +1.3% | −2.6% | +1.1% | −1.6% |
| 2023 | +2.7% | −2.5% | +2.5% | +0.5% | −1.3% | −1.0% | −0.3% | −0.7% | −2.8% | −1.7% | +4.4% | +3.7% |
| 2022 | −1.8% | −1.2% | −2.3% | −3.5% | −0.3% | −1.2% | +1.8% | −2.6% | −4.0% | −1.9% | +3.2% | −0.2% |
| 2021 | −0.3% | −1.3% | −0.8% | +0.7% | +0.4% | +0.8% | +1.0% | −0.2% | −0.7% | +0.2% | +0.1% | −0.2% |
| 2020 | +2.4% | +1.8% | −4.8% | +2.7% | +1.6% | +2.1% | +1.9% | 0.0% | +0.2% | −0.5% | +1.1% | +0.4% |
| 2019 | — | — | — | — | — | — | +0.3% | +2.6% | −0.5% | +0.3% | −0.1% | −0.3% |
BASBX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 5.60%
- 3-year Sharpe ratio: -0.15 (vs 4.5% risk-free rate)
- Best month: +4.44% (Nov 2023)
- Worst month: −2.75% (Sep 2023)
BASBX Fund Flows
Monthly money in and out of Brown Advisory Sustainable Bond Fund, from SEC Form N-PORT.
- 12-month net flow: −$37.3M
- 12-month gross sales (incl. reinvestments): $92.4M
- Sales ÷ redemptions: 0.71×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $8.1M | $5.1M | $3.0M |
| May 2026 | $4.5M | $14.5M | −$10.0M |
| Apr 2026 | $7.0M | $4.1M | $2.9M |
| Mar 2026 | $8.6M | $15.0M | −$6.4M |
| Feb 2026 | $13.3M | $22.8M | −$9.4M |
| Jan 2026 | $5.9M | $17.6M | −$11.7M |
| Dec 2025 | $12.7M | $8.3M | $4.3M |
| Nov 2025 | $4.2M | $6.0M | −$1.7M |
| Oct 2025 | $5.7M | $12.2M | −$6.5M |
| Sep 2025 | $6.4M | $6.3M | $86K |
| Aug 2025 | $7.6M | $6.6M | $976K |
| Jul 2025 | $8.3M | $11.1M | −$2.7M |
BASBX Assets Under Management
Net assets of Brown Advisory Sustainable Bond Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $536.66M |
| 2026-03-31 | $542.51M |
| 2025-12-31 | $576.27M |
| 2025-09-30 | $581.19M |
| 2025-06-30 | $578.09M |
| 2025-03-31 | $575.99M |
| 2024-12-31 | $570.17M |
| 2024-09-30 | $603.91M |
| 2024-06-30 | $557.87M |
| 2024-03-31 | $543.63M |
| 2023-12-31 | $592.78M |
| 2023-09-30 | $617.32M |
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.