BIASX vs. BIAYX

Last updated Jun 4, 2026

BIASX (Brown Advisory Small-Cap Growth Fund) and BIAYX (Brown Advisory Sustainable Small-Cap Core Fund) are both mutual funds - BIASX is a Small Cap Growth Equities fund managed by Brown Advisory Funds, while BIAYX is a Small Cap Blend Equities fund managed by Brown Advisory Funds. Over the past 3 years, BIASX returned 7.69%/yr vs 14.38%/yr for BIAYX. With a 0.96 correlation, they move nearly in lockstep. BIASX charges 1.11%/yr vs 1.08%/yr for BIAYX.

Performance

BIASX vs. BIAYX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Brown Advisory Small-Cap Growth Fund (BIASX) and Brown Advisory Sustainable Small-Cap Core Fund (BIAYX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BIASX achieves a 10.70% return, which is significantly lower than BIAYX's 13.59% return.

BIASX

• 1D: 0.14%
• 1M: 4.85%
• YTD: 10.70%
• 6M: 10.52%
• 1Y: 16.57%
• 3Y*: 7.69%
• 5Y*: 1.58%
• 10Y*: 9.21%

BIAYX

• 1D: 0.41%
• 1M: 6.13%
• YTD: 13.59%
• 6M: 13.69%
• 1Y: 27.06%
• 3Y*: 14.38%
• 5Y*: —
• 10Y*: —

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

BIASX vs. BIAYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
BIASX Brown Advisory Small-Cap Growth Fund	10.70%	2.29%	4.29%	12.43%	-20.27%	0.82%
BIAYX Brown Advisory Sustainable Small-Cap Core Fund	13.59%	9.44%	6.80%	17.39%	-20.21%	1.09%

Correlation

The correlation between BIASX and BIAYX is 0.93, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.95
Correlation (All Time) Calculated using the full available price history since Oct 11, 2021	0.96

The correlation between BIASX and BIAYX has been stable across timeframes, ranging from 0.93 to 0.96 - a consistent structural relationship.

Return for Risk

BIASX vs. BIAYX — Risk / Return Rank

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

BIASX

BIASX Risk / Return Rank: 18
BIASX Sharpe Ratio Rank: 15
BIASX Sortino Ratio Rank: 16
BIASX Omega Ratio Rank: 14
BIASX Calmar Ratio Rank: 21
BIASX Martin Ratio Rank: 24

BIAYX

BIAYX Risk / Return Rank: 39
BIAYX Sharpe Ratio Rank: 34
BIAYX Sortino Ratio Rank: 36
BIAYX Omega Ratio Rank: 32
BIAYX Calmar Ratio Rank: 48
BIAYX Martin Ratio Rank: 43

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.

BIASX vs. BIAYX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Brown Advisory Small-Cap Growth Fund (BIASX) and Brown Advisory Sustainable Small-Cap Core Fund (BIAYX). 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.

	BIASX	BIAYX	Difference
Sharpe ratio: Return per unit of total volatility	1.08	1.70	-0.62
Sortino ratio: Return per unit of downside risk	1.66	2.51	-0.85
Omega ratio: Gain probability vs. loss probability	1.19	1.29	-0.11
Calmar ratio: Return relative to maximum drawdown	1.69	2.64	-0.95
Martin ratio: Return relative to average drawdown	6.00	9.17	-3.17
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BIASX vs. BIAYX - Sharpe Ratio Comparison

The current BIASX Sharpe Ratio is 1.08, which is lower than the BIAYX Sharpe Ratio of 1.70. The chart below compares the historical Sharpe Ratios of BIASX and BIAYX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	BIASX	BIAYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.08	1.70	-0.62
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.08	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.46	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.30	0.25	+0.06

Drawdowns

BIASX vs. BIAYX - Drawdown Comparison

The maximum BIASX drawdown since its inception was -73.26%, which is greater than BIAYX's maximum drawdown of -31.81%. Use the drawdown chart below to compare losses from any high point for BIASX and BIAYX.

Drawdown Indicators

	BIASX	BIAYX	Difference
Max Drawdown Largest peak-to-trough decline	-73.26%	-31.81%	-41.45%
Max Drawdown (1Y) Largest decline over 1 year	-10.93%	-11.02%	+0.09%
Max Drawdown (3Y) Largest decline over 3 years	-24.98%	-23.51%	-1.47%
Max Drawdown (5Y) Largest decline over 5 years	-30.61%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-38.04%	—	—
Current Drawdown Current decline from peak	-0.33%	0.00%	-0.33%
Average Drawdown Average peak-to-trough decline	-23.48%	-12.81%	-10.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.07%	3.17%	-0.10%

Volatility

BIASX vs. BIAYX - Volatility Comparison

The current volatility for Brown Advisory Small-Cap Growth Fund (BIASX) is 4.55%, while Brown Advisory Sustainable Small-Cap Core Fund (BIAYX) has a volatility of 5.08%. This indicates that BIASX experiences smaller price fluctuations and is considered to be less risky than BIAYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BIASX	BIAYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.55%	5.08%	-0.53%
Volatility (6M) Calculated over the trailing 6-month period	12.44%	12.40%	+0.04%
Volatility (1Y) Calculated over the trailing 1-year period	17.07%	17.15%	-0.08%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.79%	20.69%	-0.90%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.94%	20.69%	-0.75%

BIASX vs. BIAYX - Expense Ratio Comparison

BIASX has a 1.11% expense ratio, which is higher than BIAYX's 1.08% expense ratio.

Dividends

BIASX vs. BIAYX - Dividend Comparison

BIASX's dividend yield for the trailing twelve months is around 17.72%, more than BIAYX's 3.85% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BIASX Brown Advisory Small-Cap Growth Fund	17.72%	19.62%	5.78%	0.00%	8.22%	13.22%	0.78%	4.00%	5.17%	1.69%	3.50%	16.77%
BIAYX Brown Advisory Sustainable Small-Cap Core Fund	3.85%	4.37%	0.73%	0.01%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BIASX and BIAYX in my portfolio?

With a correlation of 0.93, BIASX and BIAYX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, BIASX or BIAYX?

BIAYX has higher volatility (5.08%) compared to BIASX (4.55%). In terms of maximum drawdown, BIASX dropped -73.26% vs BIAYX's -31.81%.

Which has better risk-adjusted returns?

BIAYX currently has the higher Sharpe Ratio (1.70 vs 1.08), 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.