BIAUX vs. OSSIX

Last updated Jun 3, 2026

BIAUX (Brown Advisory Small-Cap Fundamental Value Fund) and OSSIX (Invesco Main Street Small Cap Fund) are both Small Cap Blend Equities funds. Over the past 10 years, BIAUX returned 9.79%/yr vs 11.24%/yr for OSSIX. Their correlation of 0.91 suggests significant overlap in exposure. BIAUX charges 1.10%/yr vs 0.68%/yr for OSSIX.

Performance

BIAUX vs. OSSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Brown Advisory Small-Cap Fundamental Value Fund (BIAUX) and Invesco Main Street Small Cap Fund (OSSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both stocks are quite close, with BIAUX having a 11.88% return and OSSIX slightly lower at 11.35%. Over the past 10 years, BIAUX has underperformed OSSIX with an annualized return of 9.79%, while OSSIX has yielded a comparatively higher 11.24% annualized return.

BIAUX

• 1D: -0.67%
• 1M: -1.10%
• YTD: 11.88%
• 6M: 12.78%
• 1Y: 30.43%
• 3Y*: 15.57%
• 5Y*: 7.53%
• 10Y*: 9.79%

OSSIX

• 1D: -0.55%
• 1M: 1.13%
• YTD: 11.35%
• 6M: 11.50%
• 1Y: 23.61%
• 3Y*: 15.77%
• 5Y*: 7.09%
• 10Y*: 11.24%

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

BIAUX vs. OSSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BIAUX Brown Advisory Small-Cap Fundamental Value Fund	11.88%	5.71%	11.73%	16.16%	-8.74%	31.11%	-5.69%	29.85%	-13.48%	12.17%
OSSIX Invesco Main Street Small Cap Fund	11.35%	8.92%	12.82%	17.96%	-15.75%	22.20%	20.31%	26.22%	-10.55%	14.08%

Correlation

The correlation between BIAUX and OSSIX is 0.79, 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	0.79
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Jan 3, 2014	0.91

The correlation between BIAUX and OSSIX shifts across timeframes, from 0.79 (1 year) to 0.91 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

BIAUX vs. OSSIX — Risk / Return Rank

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

BIAUX

BIAUX Risk / Return Rank: 46
BIAUX Sharpe Ratio Rank: 36
BIAUX Sortino Ratio Rank: 38
BIAUX Omega Ratio Rank: 33
BIAUX Calmar Ratio Rank: 76
BIAUX Martin Ratio Rank: 49

OSSIX

OSSIX Risk / Return Rank: 34
OSSIX Sharpe Ratio Rank: 26
OSSIX Sortino Ratio Rank: 28
OSSIX Omega Ratio Rank: 24
OSSIX Calmar Ratio Rank: 43
OSSIX Martin Ratio Rank: 47

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.

BIAUX vs. OSSIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Brown Advisory Small-Cap Fundamental Value Fund (BIAUX) and Invesco Main Street Small Cap Fund (OSSIX). 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.

	BIAUX	OSSIX	Difference
Sharpe ratio Return per unit of total volatility	1.74	1.48	+0.26
Sortino ratio Return per unit of downside risk	2.58	2.23	+0.36
Omega ratio Gain probability vs. loss probability	1.30	1.26	+0.05
Calmar ratio Return relative to maximum drawdown	3.48	2.52	+0.96
Martin ratio Return relative to average drawdown	10.15	9.90	+0.25
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BIAUX vs. OSSIX - Sharpe Ratio Comparison

The current BIAUX Sharpe Ratio is 1.74, which is comparable to the OSSIX Sharpe Ratio of 1.48. The chart below compares the historical Sharpe Ratios of BIAUX and OSSIX, 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

	BIAUX	OSSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.74	1.48	+0.26
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.38	0.35	+0.04
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.46	0.51	-0.05
Sharpe Ratio (All Time) Calculated using the full available price history	0.59	0.47	+0.12

Drawdowns

BIAUX vs. OSSIX - Drawdown Comparison

The maximum BIAUX drawdown since its inception was -45.55%, which is greater than OSSIX's maximum drawdown of -42.18%. Use the drawdown chart below to compare losses from any high point for BIAUX and OSSIX.

Drawdown Indicators

	BIAUX	OSSIX	Difference
Max Drawdown Largest peak-to-trough decline	-45.55%	-42.18%	-3.37%
Max Drawdown (1Y) Largest decline over 1 year	-8.22%	-12.49%	+4.27%
Max Drawdown (3Y) Largest decline over 3 years	-25.16%	-24.63%	-0.53%
Max Drawdown (5Y) Largest decline over 5 years	-25.16%	-28.13%	+2.97%
Max Drawdown (10Y) Largest decline over 10 years	-45.55%	-42.18%	-3.37%
Current Drawdown Current decline from peak	-1.59%	-1.68%	+0.09%
Average Drawdown Average peak-to-trough decline	-6.19%	-7.52%	+1.33%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.82%	3.18%	-0.36%

Volatility

BIAUX vs. OSSIX - Volatility Comparison

The current volatility for Brown Advisory Small-Cap Fundamental Value Fund (BIAUX) is 4.23%, while Invesco Main Street Small Cap Fund (OSSIX) has a volatility of 5.09%. This indicates that BIAUX experiences smaller price fluctuations and is considered to be less risky than OSSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BIAUX	OSSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.23%	5.09%	-0.86%
Volatility (6M) Calculated over the trailing 6-month period	11.19%	14.01%	-2.82%
Volatility (1Y) Calculated over the trailing 1-year period	17.02%	18.07%	-1.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.78%	21.05%	-1.27%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.56%	22.40%	-0.84%

BIAUX vs. OSSIX - Expense Ratio Comparison

BIAUX has a 1.10% expense ratio, which is higher than OSSIX's 0.68% expense ratio.

Dividends

BIAUX vs. OSSIX - Dividend Comparison

BIAUX's dividend yield for the trailing twelve months is around 12.05%, more than OSSIX's 7.29% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BIAUX Brown Advisory Small-Cap Fundamental Value Fund	12.05%	13.49%	16.54%	5.94%	6.16%	0.48%	0.47%	9.38%	14.31%	4.11%	0.34%	2.41%
OSSIX Invesco Main Street Small Cap Fund	7.29%	8.11%	6.24%	0.64%	0.61%	7.71%	0.85%	0.30%	8.81%	5.92%	0.58%	0.75%

Frequently Asked Questions

Can I hold both BIAUX and OSSIX in my portfolio?

BIAUX and OSSIX have a correlation of 0.79, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BIAUX or OSSIX?

OSSIX has higher volatility (5.09%) compared to BIAUX (4.23%). In terms of maximum drawdown, BIAUX dropped -45.55% vs OSSIX's -42.18%.

Which has better risk-adjusted returns?

BIAUX currently has the higher Sharpe Ratio (1.74 vs 1.48), 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.