OAKBX vs. OAKMX

Last updated Aug 5, 2026

OAKBX (Oakmark Equity and Income Fund) and OAKMX (Oakmark Fund Investor Class) are both mutual funds - OAKBX is a Diversified Portfolio fund managed by Oakmark, while OAKMX is a Large Cap Value Equities fund actively managed by Oakmark. Over the past 10 years, OAKBX returned 9.32%/yr vs 13.86%/yr for OAKMX. Their correlation of 0.88 means they have usually moved in the same direction. OAKBX charges 0.83%/yr vs 0.89%/yr for OAKMX.

Performance

OAKBX vs. OAKMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Oakmark Equity and Income Fund (OAKBX) and Oakmark Fund Investor Class (OAKMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OAKBX achieves a 5.41% return, which is significantly lower than OAKMX's 7.17% return. Over the past 10 years, OAKBX has underperformed OAKMX with an annualized return of 9.32%, while OAKMX has yielded a comparatively higher 13.86% annualized return.

OAKBX

• 1D: 0.62%
• 1M: 2.55%
• 6M: 5.33%
• YTD: 5.41%
• 1Y: 12.74%
• 3Y*: 10.29%
• 5Y*: 7.50%
• 10Y*: 9.32%
• ALL TIME*: 9.82%

OAKMX

• 1D: 0.98%
• 1M: 4.15%
• 6M: 7.62%
• YTD: 7.17%
• 1Y: 16.55%
• 3Y*: 14.93%
• 5Y*: 11.44%
• 10Y*: 13.86%
• ALL TIME*: 12.87%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
OAKBX Oakmark Equity and Income Fund	$0.00	$0.00	$0.00
OAKMX Oakmark Fund Investor Class	$0.00	$0.00	$0.00

OAKBX vs. OAKMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OAKBX Oakmark Equity and Income Fund	5.41%	11.05%	8.73%	17.39%	-12.94%	29.12%	8.68%	19.39%	-8.38%	14.43%
OAKMX Oakmark Fund Investor Class	7.17%	14.13%	16.02%	30.92%	-13.38%	34.85%	12.90%	27.14%	-12.76%	21.12%

Correlation

The correlation between OAKBX and OAKMX is 0.94, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.94
Correlation (3Y) Balances recent behavior with more history.	0.95
Correlation (5Y) Shows whether the relationship held over a longer period.	0.96
Correlation (10Y) Provides a long-term view across more market conditions.	0.95
Correlation (All Time) Calculated using the full available price history since Oct 31, 1995	0.88

The correlation between OAKBX and OAKMX has been stable across timeframes, ranging from 0.88 to 0.96 - a consistent structural relationship.

Return for Risk

OAKBX vs. OAKMX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

OAKBX

OAKBX Risk / Return Rank: 49
OAKBX Sharpe Ratio Rank: 51
OAKBX Sortino Ratio Rank: 58
OAKBX Omega Ratio Rank: 47
OAKBX Calmar Ratio Rank: 46
OAKBX Martin Ratio Rank: 41

OAKMX

OAKMX Risk / Return Rank: 47
OAKMX Sharpe Ratio Rank: 40
OAKMX Sortino Ratio Rank: 42
OAKMX Omega Ratio Rank: 38
OAKMX Calmar Ratio Rank: 74
OAKMX Martin Ratio Rank: 40

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

OAKBX vs. OAKMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Oakmark Equity and Income Fund (OAKBX) and Oakmark Fund Investor Class (OAKMX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	OAKBX	OAKMX	Difference
Sharpe ratio: Return per unit of total volatility	1.51	1.33	+0.18
Sortino ratio: Return per unit of downside risk	2.28	1.98	+0.30
Omega ratio: Gain probability vs. loss probability	1.27	1.24	+0.03
Calmar ratio: Return relative to maximum drawdown	1.96	2.55	-0.59
Martin ratio: Return relative to average drawdown	6.39	6.34	+0.05

OAKBX vs. OAKMX - Sharpe Ratio Comparison

The current OAKBX Sharpe Ratio is 1.51, which is comparable to the OAKMX Sharpe Ratio of 1.33. The chart below compares the historical Sharpe Ratios of OAKBX and OAKMX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

OAKBX vs. OAKMX - Drawdown Comparison

The maximum OAKBX drawdown since its inception was -31.31%, smaller than the maximum OAKMX drawdown of -56.19%. Use the drawdown chart below to compare losses from any high point for OAKBX and OAKMX.

Drawdown Indicators

	OAKBX	OAKMX	Difference
Max Drawdown Largest peak-to-trough decline	-31.31%	-56.19%	+24.88%
Max Drawdown (1Y) Largest decline over 1 year	-6.90%	-6.98%	+0.08%
Max Drawdown (3Y) Largest decline over 3 years	-10.91%	-17.05%	+6.14%
Max Drawdown (5Y) Largest decline over 5 years	-20.41%	-23.68%	+3.27%
Max Drawdown (10Y) Largest decline over 10 years	-30.19%	-41.43%	+11.24%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-3.75%	-6.37%	+2.62%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.11%	2.80%	-0.69%

Volatility

OAKBX vs. OAKMX - Volatility Comparison

The current volatility for Oakmark Equity and Income Fund (OAKBX) is 3.07%, while Oakmark Fund Investor Class (OAKMX) has a volatility of 4.28%. This indicates that OAKBX experiences smaller price fluctuations and is considered to be less risky than OAKMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OAKBX	OAKMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.07%	4.28%	-1.21%
Volatility (6M) Calculated over the trailing 6-month period	6.77%	9.81%	-3.04%
Volatility (1Y) Calculated over the trailing 1-year period	8.99%	13.40%	-4.41%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.12%	18.25%	-6.13%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	12.99%	20.32%	-7.33%

OAKBX vs. OAKMX - Expense Ratio Comparison

OAKBX has a 0.83% expense ratio, which is lower than OAKMX's 0.89% expense ratio.

Dividends

OAKBX vs. OAKMX - Dividend Comparison

OAKBX's dividend yield for the trailing twelve months is around 2.11%, more than OAKMX's 0.86% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
OAKBX Oakmark Equity and Income Fund	2.11%	2.16%	2.05%	2.28%	1.44%	14.26%	4.17%	9.07%	10.05%	8.09%	4.13%	6.53%
OAKMX Oakmark Fund Investor Class	0.86%	0.92%	1.12%	1.02%	0.92%	1.94%	0.17%	8.33%	8.13%	4.06%	2.58%	1.43%

Frequently Asked Questions

Can I hold both OAKBX and OAKMX in my portfolio?

With a correlation of 0.94, OAKBX and OAKMX 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, OAKBX or OAKMX?

OAKMX has higher volatility (4.28%) compared to OAKBX (3.07%). In terms of maximum drawdown, OAKBX dropped -31.31% vs OAKMX's -56.19%.

Which has better risk-adjusted returns?

OAKBX currently has the higher Sharpe Ratio (1.51 vs 1.33), 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.