BITEX vs. BIAZX

Last updated Jun 24, 2026

BITEX (Brown Advisory Tax-Exempt Sustainable Bond Fund) and BIAZX (Brown Advisory Mortgage Securities Fund) are both mutual funds - BITEX is a Municipal Bonds fund managed by Brown Advisory Funds, while BIAZX is a Government Bonds fund managed by Brown Advisory Funds. Over the past 5 years, BITEX returned 0.51%/yr vs 0.39%/yr for BIAZX. At a 0.48 correlation, their price movements are largely independent. Both charge a 0.49% expense ratio.

Performance

BITEX vs. BIAZX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Brown Advisory Tax-Exempt Sustainable Bond Fund (BITEX) and Brown Advisory Mortgage Securities Fund (BIAZX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BITEX achieves a 1.33% return, which is significantly higher than BIAZX's 0.44% return.

BITEX

• 1D: -0.11%
• 1M: 1.18%
• YTD: 1.33%
• 6M: 1.86%
• 1Y: 6.05%
• 3Y*: 3.48%
• 5Y*: 0.51%
• 10Y*: —

BIAZX

• 1D: -0.11%
• 1M: 0.47%
• YTD: 0.44%
• 6M: 0.54%
• 1Y: 5.28%
• 3Y*: 3.98%
• 5Y*: 0.39%
• 10Y*: 1.55%

*Multi-year figures are annualized to reflect compound growth (CAGR)

BITEX vs. BIAZX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
BITEX Brown Advisory Tax-Exempt Sustainable Bond Fund	1.33%	4.27%	2.02%	4.35%	-9.40%	2.21%	2.08%	0.19%
BIAZX Brown Advisory Mortgage Securities Fund	0.44%	7.99%	1.28%	4.34%	-10.64%	-0.30%	5.49%	-0.23%

Correlation

The correlation between BITEX and BIAZX is 0.48, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.48
Correlation (3Y) Calculated over the trailing 3-year period	0.54
Correlation (5Y) Calculated over the trailing 5-year period	0.52
Correlation (All Time) Calculated using the full available price history since Dec 2, 2019	0.48

The correlation between BITEX and BIAZX has been stable across timeframes, ranging from 0.48 to 0.54 - a consistent structural relationship.

Return for Risk

BITEX vs. BIAZX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

BITEX

BITEX Risk / Return Rank: 70
BITEX Sharpe Ratio Rank: 85
BITEX Sortino Ratio Rank: 91
BITEX Omega Ratio Rank: 92
BITEX Calmar Ratio Rank: 43
BITEX Martin Ratio Rank: 39

BIAZX

BIAZX Risk / Return Rank: 26
BIAZX Sharpe Ratio Rank: 27
BIAZX Sortino Ratio Rank: 28
BIAZX Omega Ratio Rank: 26
BIAZX Calmar Ratio Rank: 25
BIAZX Martin Ratio Rank: 24

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

BITEX vs. BIAZX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Brown Advisory Tax-Exempt Sustainable Bond Fund (BITEX) and Brown Advisory Mortgage Securities Fund (BIAZX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	BITEX	BIAZX	Difference
Sharpe ratio: Return per unit of total volatility	2.56	1.37	+1.20
Sortino ratio: Return per unit of downside risk	4.21	2.03	+2.18
Omega ratio: Gain probability vs. loss probability	1.66	1.25	+0.41
Calmar ratio: Return relative to maximum drawdown	2.39	1.76	+0.62
Martin ratio: Return relative to average drawdown	8.09	5.47	+2.61

BITEX vs. BIAZX - Sharpe Ratio Comparison

The current BITEX Sharpe Ratio is 2.56, which is higher than the BIAZX Sharpe Ratio of 1.37. The chart below compares the historical Sharpe Ratios of BITEX and BIAZX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

BITEX vs. BIAZX - Drawdown Comparison

The maximum BITEX drawdown since its inception was -13.06%, smaller than the maximum BIAZX drawdown of -15.95%. Use the drawdown chart below to compare losses from any high point for BITEX and BIAZX.

Drawdown Indicators

	BITEX	BIAZX	Difference
Max Drawdown Largest peak-to-trough decline	-13.06%	-15.95%	+2.89%
Max Drawdown (1Y) Largest decline over 1 year	-2.60%	-3.14%	+0.54%
Max Drawdown (3Y) Largest decline over 3 years	-4.76%	-7.02%	+2.26%
Max Drawdown (5Y) Largest decline over 5 years	-13.06%	-15.95%	+2.89%
Max Drawdown (10Y) Largest decline over 10 years	—	-15.95%	—
Current Drawdown Current decline from peak	-0.54%	-1.71%	+1.17%
Average Drawdown Average peak-to-trough decline	-4.51%	-2.84%	-1.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.76%	1.01%	-0.25%

Volatility

BITEX vs. BIAZX - Volatility Comparison

The current volatility for Brown Advisory Tax-Exempt Sustainable Bond Fund (BITEX) is 0.68%, while Brown Advisory Mortgage Securities Fund (BIAZX) has a volatility of 1.29%. This indicates that BITEX experiences smaller price fluctuations and is considered to be less risky than BIAZX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BITEX	BIAZX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.68%	1.29%	-0.61%
Volatility (6M) Calculated over the trailing 6-month period	1.85%	3.05%	-1.20%
Volatility (1Y) Calculated over the trailing 1-year period	2.42%	4.06%	-1.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.27%	5.84%	-2.57%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	4.03%	4.46%	-0.43%

BITEX vs. BIAZX - Expense Ratio Comparison

Both BITEX and BIAZX have an expense ratio of 0.49%.

Dividends

BITEX vs. BIAZX - Dividend Comparison

BITEX's dividend yield for the trailing twelve months is around 3.51%, less than BIAZX's 4.52% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BIAZX Brown Advisory Mortgage Securities Fund	4.52%	4.43%	4.43%	3.65%	2.33%	0.75%	0.98%	2.12%	2.77%	2.03%	2.82%	3.59%
BITEX Brown Advisory Tax-Exempt Sustainable Bond Fund	3.51%	3.25%	3.32%	2.78%	1.25%	2.00%	1.45%	0.09%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BITEX and BIAZX in my portfolio?

BITEX and BIAZX have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BITEX or BIAZX?

BIAZX has higher volatility (1.29%) compared to BITEX (0.68%). In terms of maximum drawdown, BITEX dropped -13.06% vs BIAZX's -15.95%.

Which has better risk-adjusted returns?

BITEX currently has the higher Sharpe Ratio (2.56 vs 1.37), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.