BIAZX Performance — Brown Advisory Mortgage Securities Fund, Investor Shares
Data updated: 2026-09-11
BIAZX returned +0.82% year to date and +4.82% over one year to Jun 2026. Annualised returns are +4.24% over 3 years and +0.44% over 5 years. Against its Intermediate Securitized Bond category average the fund came out behind over three years but ahead over one: $100 invested three years ago grew to $113, against $116 for the category, and to $105 over one year, against $105. Volatility over the past three years was 5.91% a year. In the 12 months to Jun 2026 the fund lost a net $22.4M, and assets reached $267.68M.
BIAZX Growth of $100
What $100 invested in Brown Advisory Mortgage Securities Fund grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Intermediate Securitized Bond category average over the same months.
| Period | BIAZX | Category average |
|---|---|---|
| 1 year (Jul 2025 – Jun 2026) | $105 | $105 |
| 3 years (Jul 2023 – Jun 2026) | $113 | $116 |
| 5 years (Jul 2021 – Jun 2026) | $102 | $105 |
| Since data start (Jul 2019 – Jun 2026) | $110 | $113 |
BIAZX Trailing Returns
Total returns to Jun 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +0.82% |
| 1 year | +4.82% |
| 3 years (annualised) | +4.24% |
| 5 years (annualised) | +0.44% |
BIAZX Annual Returns
Calendar-year total returns of Brown Advisory Mortgage Securities Fund, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jun) | +0.82% |
| 2025 | +7.98% |
| 2024 | +1.28% |
| 2023 | +4.33% |
| 2022 | −10.64% |
| 2021 | −0.31% |
| 2020 | +5.51% |
| 2019 (Jul–Dec) | +1.85% |
BIAZX 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 | +0.5% | +1.6% | −1.9% | +0.1% | +0.2% | +0.2% | — | — | — | — | — | — |
| 2025 | +0.4% | +2.4% | 0.0% | +0.4% | −0.9% | +1.6% | −0.4% | +1.6% | +1.2% | +0.8% | +0.7% | 0.0% |
| 2024 | −0.3% | −1.4% | +0.8% | −2.8% | +1.8% | +1.1% | +2.5% | +1.6% | +1.2% | −2.8% | +1.2% | −1.5% |
| 2023 | +3.0% | −2.2% | +1.7% | +0.6% | −0.9% | −0.6% | −0.1% | −0.8% | −2.8% | −1.9% | +4.6% | +4.0% |
| 2022 | −1.4% | −1.0% | −2.3% | −2.0% | +0.4% | −1.1% | +1.8% | −2.5% | −4.2% | −1.9% | +3.4% | −0.1% |
| 2021 | +0.2% | −0.4% | −0.2% | +0.6% | +0.1% | 0.0% | +0.3% | 0.0% | −0.4% | −0.2% | −0.1% | −0.2% |
| 2020 | +1.5% | +1.5% | −0.9% | +1.0% | +0.5% | +0.6% | +0.3% | +0.2% | +0.3% | −0.3% | +0.4% | +0.3% |
| 2019 | — | — | — | — | — | — | +0.3% | +1.7% | −0.1% | +0.1% | +0.1% | −0.2% |
BIAZX Risk
Risk measures from monthly returns over Jul 2023 – Jun 2026.
- 3-year volatility (annualised): 5.91%
- 3-year Sharpe ratio: -0.04 (vs 4.5% risk-free rate)
- Best month: +4.57% (Nov 2023)
- Worst month: −2.81% (Sep 2023)
BIAZX Fund Flows
Monthly money in and out of Brown Advisory Mortgage Securities Fund, from SEC Form N-PORT.
- 12-month net flow: −$22.4M
- 12-month gross sales (incl. reinvestments): $49.7M
- Sales ÷ redemptions: 0.69×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jun 2026 | $4.2M | $3.0M | $1.2M |
| May 2026 | $841K | $4.1M | −$3.2M |
| Apr 2026 | $618K | $5.1M | −$4.5M |
| Mar 2026 | $2.7M | $5.5M | −$2.8M |
| Feb 2026 | $2.5M | $125K | $2.4M |
| Jan 2026 | $11.6M | $670K | $10.9M |
| Dec 2025 | $3.9M | $3.8M | $27K |
| Nov 2025 | $4.4M | $14.3M | −$9.9M |
| Oct 2025 | $5.0M | $6.1M | −$1.1M |
| Sep 2025 | $4.5M | $15.1M | −$10.7M |
| Aug 2025 | $1.3M | $4.7M | −$3.5M |
| Jul 2025 | $8.3M | $9.6M | −$1.2M |
BIAZX Assets Under Management
Net assets of Brown Advisory Mortgage Securities Fund by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-06-30 | $267.68M |
| 2026-03-31 | $275.84M |
| 2025-12-31 | $267.52M |
| 2025-09-30 | $277.36M |
| 2025-06-30 | $289.35M |
| 2025-03-31 | $297.47M |
| 2024-12-31 | $285.41M |
| 2024-09-30 | $298.14M |
| 2024-06-30 | $285.72M |
| 2024-03-31 | $281.70M |
| 2023-12-31 | $301.18M |
| 2023-09-30 | $287.46M |
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.