ABYSX vs. BRSIX

Last updated Jun 5, 2026

ABYSX (AB Discovery Value Fund) and BRSIX (Bridgeway Ultra Small Company Market Fund) are both Small Cap Value Equities funds. Over the past 10 years, ABYSX returned 8.97%/yr vs 8.14%/yr for BRSIX. Their correlation of 0.83 suggests significant overlap in exposure. ABYSX charges 0.83%/yr vs 0.78%/yr for BRSIX.

Performance

ABYSX vs. BRSIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AB Discovery Value Fund (ABYSX) and Bridgeway Ultra Small Company Market Fund (BRSIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ABYSX achieves a 13.30% return, which is significantly lower than BRSIX's 16.60% return. Over the past 10 years, ABYSX has outperformed BRSIX with an annualized return of 8.97%, while BRSIX has yielded a comparatively lower 8.14% annualized return.

ABYSX

• 1D: 0.08%
• 1M: 1.15%
• YTD: 13.30%
• 6M: 12.49%
• 1Y: 22.85%
• 3Y*: 13.66%
• 5Y*: 5.31%
• 10Y*: 8.97%

BRSIX

• 1D: -2.93%
• 1M: 1.19%
• YTD: 16.60%
• 6M: 17.63%
• 1Y: 54.50%
• 3Y*: 20.41%
• 5Y*: -0.55%
• 10Y*: 8.14%

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

ABYSX vs. BRSIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ABYSX AB Discovery Value Fund	13.30%	2.84%	9.84%	17.04%	-16.10%	35.67%	3.34%	20.10%	-15.10%	12.88%
BRSIX Bridgeway Ultra Small Company Market Fund	16.60%	20.09%	14.92%	11.46%	-23.43%	-1.93%	25.50%	15.34%	-17.23%	12.29%

Correlation

The correlation between ABYSX and BRSIX is 0.70, 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	0.70
Correlation (3Y) Calculated over the trailing 3-year period	0.77
Correlation (5Y) Calculated over the trailing 5-year period	0.78
Correlation (10Y) Calculated over the trailing 10-year period	0.80
Correlation (All Time) Calculated using the full available price history since Mar 30, 2001	0.83

The correlation between ABYSX and BRSIX shifts across timeframes, from 0.70 (1 year) to 0.83 (all time), reflecting how their relationship changes across market environments.

Return for Risk

ABYSX vs. BRSIX — Risk / Return Rank

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

ABYSX

ABYSX Risk / Return Rank: 28
ABYSX Sharpe Ratio Rank: 25
ABYSX Sortino Ratio Rank: 26
ABYSX Omega Ratio Rank: 24
ABYSX Calmar Ratio Rank: 34
ABYSX Martin Ratio Rank: 30

BRSIX

BRSIX Risk / Return Rank: 67
BRSIX Sharpe Ratio Rank: 64
BRSIX Sortino Ratio Rank: 55
BRSIX Omega Ratio Rank: 46
BRSIX Calmar Ratio Rank: 91
BRSIX Martin Ratio Rank: 80

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.

ABYSX vs. BRSIX - Risk-Adjusted Trends Comparison

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

	ABYSX	BRSIX	Difference
Sharpe ratio: Return per unit of total volatility	1.40	2.35	-0.95
Sortino ratio: Return per unit of downside risk	2.12	3.12	-1.00
Omega ratio: Gain probability vs. loss probability	1.25	1.37	-0.12
Calmar ratio: Return relative to maximum drawdown	2.15	4.83	-2.68
Martin ratio: Return relative to average drawdown	6.84	14.83	-7.99
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ABYSX vs. BRSIX - Sharpe Ratio Comparison

The current ABYSX Sharpe Ratio is 1.40, which is lower than the BRSIX Sharpe Ratio of 2.35. The chart below compares the historical Sharpe Ratios of ABYSX and BRSIX, 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

	ABYSX	BRSIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.40	2.35	-0.95
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.26	-0.02	+0.28
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.39	0.34	+0.05
Sharpe Ratio (All Time) Calculated using the full available price history	0.44	0.44	0.00

Drawdowns

ABYSX vs. BRSIX - Drawdown Comparison

The maximum ABYSX drawdown since its inception was -60.01%, roughly equal to the maximum BRSIX drawdown of -61.79%. Use the drawdown chart below to compare losses from any high point for ABYSX and BRSIX.

Drawdown Indicators

	ABYSX	BRSIX	Difference
Max Drawdown Largest peak-to-trough decline	-60.01%	-61.79%	+1.78%
Max Drawdown (1Y) Largest decline over 1 year	-10.44%	-11.46%	+1.02%
Max Drawdown (3Y) Largest decline over 3 years	-24.81%	-30.80%	+5.99%
Max Drawdown (5Y) Largest decline over 5 years	-24.81%	-53.66%	+28.85%
Max Drawdown (10Y) Largest decline over 10 years	-48.86%	-54.09%	+5.23%
Current Drawdown Current decline from peak	0.00%	-5.30%	+5.30%
Average Drawdown Average peak-to-trough decline	-8.71%	-15.63%	+6.92%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.27%	3.72%	-0.45%

Volatility

ABYSX vs. BRSIX - Volatility Comparison

The current volatility for AB Discovery Value Fund (ABYSX) is 4.11%, while Bridgeway Ultra Small Company Market Fund (BRSIX) has a volatility of 6.26%. This indicates that ABYSX experiences smaller price fluctuations and is considered to be less risky than BRSIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ABYSX	BRSIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.11%	6.26%	-2.15%
Volatility (6M) Calculated over the trailing 6-month period	11.45%	15.45%	-4.00%
Volatility (1Y) Calculated over the trailing 1-year period	16.06%	23.63%	-7.57%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.89%	24.46%	-3.57%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.88%	24.12%	-1.24%

ABYSX vs. BRSIX - Expense Ratio Comparison

ABYSX has a 0.83% expense ratio, which is higher than BRSIX's 0.78% expense ratio.

Dividends

ABYSX vs. BRSIX - Dividend Comparison

ABYSX's dividend yield for the trailing twelve months is around 5.30%, more than BRSIX's 0.88% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ABYSX AB Discovery Value Fund	5.30%	6.00%	14.12%	6.27%	7.61%	9.48%	0.77%	4.15%	12.31%	6.54%	3.67%	6.50%
BRSIX Bridgeway Ultra Small Company Market Fund	0.88%	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 ABYSX and BRSIX in my portfolio?

ABYSX and BRSIX have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ABYSX or BRSIX?

BRSIX has higher volatility (6.26%) compared to ABYSX (4.11%). In terms of maximum drawdown, ABYSX dropped -60.01% vs BRSIX's -61.79%.

Which has better risk-adjusted returns?

BRSIX currently has the higher Sharpe Ratio (2.35 vs 1.40), 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.