BRSIX vs. BOSVX

Last updated Jun 4, 2026

BRSIX (Bridgeway Ultra Small Company Market Fund) and BOSVX (Bridgeway Omni Small-Cap Value Fund) are both Small Cap Value Equities funds from Bridgeway. Over the past 10 years, BRSIX returned 8.46%/yr vs 11.45%/yr for BOSVX. Their correlation of 0.87 suggests significant overlap in exposure. BRSIX charges 0.78%/yr vs 0.60%/yr for BOSVX.

Performance

BRSIX vs. BOSVX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Bridgeway Ultra Small Company Market Fund (BRSIX) and Bridgeway Omni Small-Cap Value Fund (BOSVX). 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 BRSIX having a 20.12% return and BOSVX slightly lower at 19.41%. Over the past 10 years, BRSIX has underperformed BOSVX with an annualized return of 8.46%, while BOSVX has yielded a comparatively higher 11.45% annualized return.

BRSIX

• 1D: -0.22%
• 1M: 5.49%
• YTD: 20.12%
• 6M: 22.37%
• 1Y: 59.70%
• 3Y*: 21.61%
• 5Y*: 0.11%
• 10Y*: 8.46%

BOSVX

• 1D: 1.12%
• 1M: 1.97%
• YTD: 19.41%
• 6M: 18.62%
• 1Y: 43.30%
• 3Y*: 19.28%
• 5Y*: 9.81%
• 10Y*: 11.45%

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

BRSIX vs. BOSVX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
BRSIX Bridgeway Ultra Small Company Market Fund	20.12%	20.09%	14.92%	11.46%	-23.43%	-1.93%	25.50%	15.34%	-17.23%	12.29%
BOSVX Bridgeway Omni Small-Cap Value Fund	19.41%	9.78%	4.21%	18.18%	-4.27%	48.03%	0.83%	13.90%	-17.15%	5.91%

Correlation

The correlation between BRSIX and BOSVX is 0.78, 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	0.78
Correlation (3Y) Calculated over the trailing 3-year period	0.82
Correlation (5Y) Calculated over the trailing 5-year period	0.82
Correlation (10Y) Calculated over the trailing 10-year period	0.84
Correlation (All Time) Calculated using the full available price history since Sep 1, 2011	0.87

The correlation between BRSIX and BOSVX has been stable across timeframes, ranging from 0.78 to 0.87 - a consistent structural relationship.

Return for Risk

BRSIX vs. BOSVX — Risk / Return Rank

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

BRSIX

BRSIX Risk / Return Rank: 79
BRSIX Sharpe Ratio Rank: 84
BRSIX Sortino Ratio Rank: 72
BRSIX Omega Ratio Rank: 57
BRSIX Calmar Ratio Rank: 94
BRSIX Martin Ratio Rank: 88

BOSVX

BOSVX Risk / Return Rank: 72
BOSVX Sharpe Ratio Rank: 63
BOSVX Sortino Ratio Rank: 61
BOSVX Omega Ratio Rank: 57
BOSVX Calmar Ratio Rank: 94
BOSVX Martin Ratio Rank: 85

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.

BRSIX vs. BOSVX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Bridgeway Ultra Small Company Market Fund (BRSIX) and Bridgeway Omni Small-Cap Value Fund (BOSVX). 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.

	BRSIX	BOSVX	Difference
Sharpe ratio: Return per unit of total volatility	2.72	2.34	+0.38
Sortino ratio: Return per unit of downside risk	3.54	3.27	+0.26
Omega ratio: Gain probability vs. loss probability	1.42	1.42	0.00
Calmar ratio: Return relative to maximum drawdown	5.56	5.55	+0.01
Martin ratio: Return relative to average drawdown	17.10	16.24	+0.86
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BRSIX vs. BOSVX - Sharpe Ratio Comparison

The current BRSIX Sharpe Ratio is 2.72, which is comparable to the BOSVX Sharpe Ratio of 2.34. The chart below compares the historical Sharpe Ratios of BRSIX and BOSVX, 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

	BRSIX	BOSVX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.72	2.34	+0.38
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.00	0.44	-0.43
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.35	0.46	-0.11
Sharpe Ratio (All Time) Calculated using the full available price history	0.44	0.50	-0.06

Drawdowns

BRSIX vs. BOSVX - Drawdown Comparison

The maximum BRSIX drawdown since its inception was -61.79%, which is greater than BOSVX's maximum drawdown of -57.14%. Use the drawdown chart below to compare losses from any high point for BRSIX and BOSVX.

Drawdown Indicators

	BRSIX	BOSVX	Difference
Max Drawdown Largest peak-to-trough decline	-61.79%	-57.14%	-4.65%
Max Drawdown (1Y) Largest decline over 1 year	-11.46%	-8.27%	-3.19%
Max Drawdown (3Y) Largest decline over 3 years	-30.80%	-28.71%	-2.09%
Max Drawdown (5Y) Largest decline over 5 years	-53.66%	-28.71%	-24.95%
Max Drawdown (10Y) Largest decline over 10 years	-54.09%	-57.14%	+3.05%
Current Drawdown Current decline from peak	-2.45%	-0.00%	-2.45%
Average Drawdown Average peak-to-trough decline	-15.64%	-8.58%	-7.06%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.71%	2.82%	+0.89%

Volatility

BRSIX vs. BOSVX - Volatility Comparison

Bridgeway Ultra Small Company Market Fund (BRSIX) has a higher volatility of 5.37% compared to Bridgeway Omni Small-Cap Value Fund (BOSVX) at 4.64%. This indicates that BRSIX's price experiences larger fluctuations and is considered to be riskier than BOSVX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BRSIX	BOSVX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.37%	4.64%	+0.73%
Volatility (6M) Calculated over the trailing 6-month period	15.32%	13.25%	+2.07%
Volatility (1Y) Calculated over the trailing 1-year period	23.42%	19.64%	+3.78%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	24.42%	22.62%	+1.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.11%	25.05%	-0.94%

BRSIX vs. BOSVX - Expense Ratio Comparison

BRSIX has a 0.78% expense ratio, which is higher than BOSVX's 0.60% expense ratio.

Dividends

BRSIX vs. BOSVX - Dividend Comparison

BRSIX's dividend yield for the trailing twelve months is around 0.86%, less than BOSVX's 8.36% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BOSVX Bridgeway Omni Small-Cap Value Fund	8.36%	9.99%	9.71%	8.55%	21.96%	4.12%	1.21%	0.99%	10.36%	6.66%	0.89%	1.00%
BRSIX Bridgeway Ultra Small Company Market Fund	0.86%	1.03%	0.62%	0.89%	2.12%	1.32%	3.46%	1.30%	16.12%	13.71%	8.25%	12.77%

Frequently Asked Questions

Can I hold both BRSIX and BOSVX in my portfolio?

BRSIX and BOSVX have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, BRSIX or BOSVX?

BRSIX has higher volatility (5.37%) compared to BOSVX (4.64%). In terms of maximum drawdown, BRSIX dropped -61.79% vs BOSVX's -57.14%.

Which has better risk-adjusted returns?

BRSIX currently has the higher Sharpe Ratio (2.72 vs 2.34), 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.