BAFZX — Brown Advisory Mortgage Securities Fund
Data updated: 2026-05-27
BAFZX — Brown Advisory Mortgage Securities Fund data: holdings, portfolio allocation, expenses, performance, cashflows, risk and SEC filings. Long Securitized (MBS/ABS/CMBS) Bond · $275.84M AUM · 0.46% expense ratio · 5.5% 1-yr return. From SEC regulatory filings.
BAFZX Fund Overview
BAFZX — Brown Advisory Mortgage Securities Fund is a US mutual fund managed by Brown Advisory Funds, categorised as Long Securitized (MBS/ABS/CMBS) Bond. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US mutual fund
- Manager: Brown Advisory Funds
- Category: Long Securitized (MBS/ABS/CMBS) Bond
- Assets under management: $275.84M
- 1-year return: 5.5%
- Ticker: BAFZX
- SEC CIK: 0001548609
- SEC series ID: S000043634
- Share class ID: C000135279
BAFZX Holdings
Top 10 holdings of Brown Advisory Mortgage Securities Fund by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Treasury Bill | 9.40% |
| Fannie Mae or Freddie Mac | 8.75% |
| First American Government Obli | 4.25% |
| Fannie Mae or Freddie Mac | 3.74% |
| Fannie Mae or Freddie Mac | 2.98% |
| Fannie Mae or Freddie Mac | 2.83% |
| Fannie Mae or Freddie Mac | 1.79% |
| Fannie Mae or Freddie Mac | 1.62% |
| Freddie Mac | 1.44% |
| Verizon Master Trust | 1.09% |
BAFZX Portfolio Allocation
Asset-class allocation of Brown Advisory Mortgage Securities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Securitized | 109.7% |
| Fixed Income | 9.5% |
| Cash & Equivalents | 4.3% |
| Real Estate | 0.1% |
BAFZX Performance
Total returns for BAFZX (as of 2026-08-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 0.4% |
| 1 year | 5.5% |
| 3 years (annualised) | 3.9% |
| 5 years (annualised) | 0.5% |
BAFZX Risk Information
Risk metrics for BAFZX, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 3.7%
BAFZX Costs and Fees
BAFZX costs about $46 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.46%
- Gross expense ratio: 0.46%
- Portfolio turnover: 221%
- Brokerage commissions: 0.20 bps of average net assets (SEC N-CEN)
BAFZX Cashflows
Over the 12 months to 2026-03, Brown Advisory Mortgage Securities Fund had net outflows of $23.87M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-03 | −$2.84M |
| 2026-02 | $2.36M |
| 2026-01 | $10.89M |
| 2025-12 | $26.65K |
| 2025-11 | −$9.89M |
| 2025-10 | −$1.10M |
BAFZX Debt Constituents
Largest debt holdings of Brown Advisory Mortgage Securities Fund by percentage of net assets, from the latest SEC N-PORT filing.
| Debt holding | % of net assets |
|---|---|
| Treasury Bill | 9.40% |
| Colorado St Hlth Facs Auth Rev | 0.08% |
BAFZX Prospectus and SEC Filings
Official Brown Advisory Mortgage Securities Fund filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
Related Funds
Other Long Securitized (MBS/ABS/CMBS) Bond funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.