BISLX vs. BIAFX

Last updated Jun 4, 2026

BISLX (Brown Advisory Sustainable International Leaders Fund) and BIAFX (Brown Advisory Flexible Equity Fund) are both mutual funds - BISLX is a Foreign Large Cap Equities fund managed by Brown Advisory Funds, while BIAFX is a Large Cap Growth Equities fund managed by Brown Advisory Funds. Over the past 3 years, BISLX returned 4.71%/yr vs 18.63%/yr for BIAFX. A 0.76 correlation means they provide meaningful diversification when combined. BISLX charges 1.00%/yr vs 0.68%/yr for BIAFX.

Performance

BISLX vs. BIAFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Brown Advisory Sustainable International Leaders Fund (BISLX) and Brown Advisory Flexible Equity Fund (BIAFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BISLX achieves a -3.00% return, which is significantly lower than BIAFX's 5.43% return.

BISLX

• 1D: -0.18%
• 1M: 1.80%
• YTD: -3.00%
• 6M: -2.15%
• 1Y: -2.23%
• 3Y*: 4.71%
• 5Y*: —
• 10Y*: —

BIAFX

• 1D: -0.13%
• 1M: 2.23%
• YTD: 5.43%
• 6M: 6.43%
• 1Y: 13.78%
• 3Y*: 18.63%
• 5Y*: 10.52%
• 10Y*: 15.37%

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

BISLX vs. BIAFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
BISLX Brown Advisory Sustainable International Leaders Fund	-3.00%	15.31%	1.50%	15.76%	-4.60%
BIAFX Brown Advisory Flexible Equity Fund	5.43%	9.74%	23.72%	34.52%	-11.34%

Correlation

The correlation between BISLX and BIAFX is 0.72, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.72
Correlation (3Y) Calculated over the trailing 3-year period	0.70
Correlation (All Time) Calculated using the full available price history since Mar 7, 2022	0.76

The correlation between BISLX and BIAFX has been stable across timeframes, ranging from 0.70 to 0.76 - a consistent structural relationship.

Return for Risk

BISLX vs. BIAFX — Risk / Return Rank

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

BISLX

BISLX Risk / Return Rank: 2
BISLX Sharpe Ratio Rank: 2
BISLX Sortino Ratio Rank: 2
BISLX Omega Ratio Rank: 2
BISLX Calmar Ratio Rank: 2
BISLX Martin Ratio Rank: 1

BIAFX

BIAFX Risk / Return Rank: 14
BIAFX Sharpe Ratio Rank: 15
BIAFX Sortino Ratio Rank: 14
BIAFX Omega Ratio Rank: 15
BIAFX Calmar Ratio Rank: 11
BIAFX Martin Ratio Rank: 14

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.

BISLX vs. BIAFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Brown Advisory Sustainable International Leaders Fund (BISLX) and Brown Advisory Flexible Equity Fund (BIAFX). 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.

	BISLX	BIAFX	Difference
Sharpe ratio Return per unit of total volatility	-0.19	1.09	-1.28
Sortino ratio Return per unit of downside risk	-0.17	1.56	-1.73
Omega ratio Gain probability vs. loss probability	0.98	1.20	-0.22
Calmar ratio Return relative to maximum drawdown	-0.22	1.08	-1.30
Martin ratio Return relative to average drawdown	-0.66	3.90	-4.57
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BISLX vs. BIAFX - Sharpe Ratio Comparison

The current BISLX Sharpe Ratio is -0.19, which is lower than the BIAFX Sharpe Ratio of 1.09. The chart below compares the historical Sharpe Ratios of BISLX and BIAFX, 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

	BISLX	BIAFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-0.19	1.09	-1.28
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.59	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.80	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.32	0.50	-0.18

Drawdowns

BISLX vs. BIAFX - Drawdown Comparison

The maximum BISLX drawdown since its inception was -24.49%, smaller than the maximum BIAFX drawdown of -60.32%. Use the drawdown chart below to compare losses from any high point for BISLX and BIAFX.

Drawdown Indicators

	BISLX	BIAFX	Difference
Max Drawdown Largest peak-to-trough decline	-24.49%	-60.32%	+35.83%
Max Drawdown (1Y) Largest decline over 1 year	-13.12%	-13.10%	-0.02%
Max Drawdown (3Y) Largest decline over 3 years	-18.16%	-17.99%	-0.17%
Max Drawdown (5Y) Largest decline over 5 years	—	-27.44%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-35.49%	—
Current Drawdown Current decline from peak	-5.43%	-0.13%	-5.30%
Average Drawdown Average peak-to-trough decline	-6.04%	-10.15%	+4.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.35%	3.63%	+0.72%

Volatility

BISLX vs. BIAFX - Volatility Comparison

Brown Advisory Sustainable International Leaders Fund (BISLX) has a higher volatility of 4.40% compared to Brown Advisory Flexible Equity Fund (BIAFX) at 2.68%. This indicates that BISLX's price experiences larger fluctuations and is considered to be riskier than BIAFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BISLX	BIAFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.40%	2.68%	+1.72%
Volatility (6M) Calculated over the trailing 6-month period	11.88%	10.04%	+1.84%
Volatility (1Y) Calculated over the trailing 1-year period	14.86%	13.08%	+1.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.20%	17.83%	-0.63%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.20%	19.18%	-1.98%

BISLX vs. BIAFX - Expense Ratio Comparison

BISLX has a 1.00% expense ratio, which is higher than BIAFX's 0.68% expense ratio.

Dividends

BISLX vs. BIAFX - Dividend Comparison

BISLX's dividend yield for the trailing twelve months is around 3.71%, less than BIAFX's 5.51% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BIAFX Brown Advisory Flexible Equity Fund	5.51%	5.81%	4.81%	2.67%	3.71%	3.75%	3.16%	8.65%	4.15%	0.42%	0.44%	0.58%
BISLX Brown Advisory Sustainable International Leaders Fund	3.71%	3.60%	1.12%	0.36%	0.24%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BISLX and BIAFX in my portfolio?

BISLX and BIAFX have a correlation of 0.72, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BISLX or BIAFX?

BISLX has higher volatility (4.40%) compared to BIAFX (2.68%). In terms of maximum drawdown, BISLX dropped -24.49% vs BIAFX's -60.32%.

Which has better risk-adjusted returns?

BIAFX currently has the higher Sharpe Ratio (1.09 vs -0.19), 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.