OAKLX vs. OANMX

Last updated Jun 5, 2026

OAKLX (Oakmark Select Fund) and OANMX (Oakmark Fund Institutional Class) are both Large Cap Value Equities funds from Oakmark. Over the past 5 years, OAKLX returned 8.26%/yr vs 9.27%/yr for OANMX. With a 0.96 correlation, they move nearly in lockstep. OAKLX charges 0.98%/yr vs 0.68%/yr for OANMX.

Performance

OAKLX vs. OANMX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Oakmark Select Fund (OAKLX) and Oakmark Fund Institutional Class (OANMX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OAKLX achieves a -1.44% return, which is significantly higher than OANMX's -2.20% return.

OAKLX

• 1D: -1.30%
• 1M: 0.09%
• YTD: -1.44%
• 6M: 1.65%
• 1Y: 13.43%
• 3Y*: 15.37%
• 5Y*: 8.26%
• 10Y*: 10.74%

OANMX

• 1D: -1.38%
• 1M: -2.16%
• YTD: -2.20%
• 6M: 0.36%
• 1Y: 10.56%
• 3Y*: 14.76%
• 5Y*: 9.27%
• 10Y*: —

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

OAKLX vs. OANMX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OAKLX Oakmark Select Fund	-1.44%	14.26%	14.15%	43.02%	-22.51%	34.62%	10.76%	27.70%	-24.90%	14.60%
OANMX Oakmark Fund Institutional Class	-2.20%	14.38%	16.28%	31.21%	-13.18%	34.87%	13.09%	27.35%	-12.62%	15.96%

Correlation

The correlation between OAKLX and OANMX is 0.88, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.88
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (All Time) Calculated using the full available price history since Jan 4, 2017	0.96

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

Return for Risk

OAKLX vs. OANMX — Risk / Return Rank

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

OAKLX

OAKLX Risk / Return Rank: 11
OAKLX Sharpe Ratio Rank: 12
OAKLX Sortino Ratio Rank: 12
OAKLX Omega Ratio Rank: 11
OAKLX Calmar Ratio Rank: 11
OAKLX Martin Ratio Rank: 10

OANMX

OANMX Risk / Return Rank: 12
OANMX Sharpe Ratio Rank: 10
OANMX Sortino Ratio Rank: 10
OANMX Omega Ratio Rank: 10
OANMX Calmar Ratio Rank: 17
OANMX Martin Ratio Rank: 13

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.

OAKLX vs. OANMX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Oakmark Select Fund (OAKLX) and Oakmark Fund Institutional Class (OANMX). 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.

	OAKLX	OANMX	Difference
Sharpe ratio: Return per unit of total volatility	0.89	0.78	+0.11
Sortino ratio: Return per unit of downside risk	1.35	1.20	+0.15
Omega ratio: Gain probability vs. loss probability	1.17	1.14	+0.02
Calmar ratio: Return relative to maximum drawdown	1.06	1.47	-0.42
Martin ratio: Return relative to average drawdown	2.80	3.77	-0.97
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

OAKLX vs. OANMX - Sharpe Ratio Comparison

The current OAKLX Sharpe Ratio is 0.89, which is comparable to the OANMX Sharpe Ratio of 0.78. The chart below compares the historical Sharpe Ratios of OAKLX and OANMX, 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

	OAKLX	OANMX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.89	0.78	+0.11
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.42	0.51	-0.09
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.50	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.58	0.59	0.00

Drawdowns

OAKLX vs. OANMX - Drawdown Comparison

The maximum OAKLX drawdown since its inception was -61.15%, which is greater than OANMX's maximum drawdown of -40.08%. Use the drawdown chart below to compare losses from any high point for OAKLX and OANMX.

Drawdown Indicators

	OAKLX	OANMX	Difference
Max Drawdown Largest peak-to-trough decline	-61.15%	-40.08%	-21.07%
Max Drawdown (1Y) Largest decline over 1 year	-12.49%	-6.93%	-5.56%
Max Drawdown (3Y) Largest decline over 3 years	-18.76%	-17.01%	-1.75%
Max Drawdown (5Y) Largest decline over 5 years	-27.87%	-23.55%	-4.32%
Max Drawdown (10Y) Largest decline over 10 years	-48.42%	—	—
Current Drawdown Current decline from peak	-3.93%	-4.71%	+0.78%
Average Drawdown Average peak-to-trough decline	-8.98%	-5.58%	-3.40%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.71%	2.70%	+2.01%

Volatility

OAKLX vs. OANMX - Volatility Comparison

Oakmark Select Fund (OAKLX) has a higher volatility of 4.44% compared to Oakmark Fund Institutional Class (OANMX) at 3.21%. This indicates that OAKLX's price experiences larger fluctuations and is considered to be riskier than OANMX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OAKLX	OANMX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.44%	3.21%	+1.23%
Volatility (6M) Calculated over the trailing 6-month period	11.13%	9.44%	+1.69%
Volatility (1Y) Calculated over the trailing 1-year period	14.80%	13.08%	+1.72%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.59%	18.30%	+1.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.57%	20.64%	+0.93%

OAKLX vs. OANMX - Expense Ratio Comparison

OAKLX has a 0.98% expense ratio, which is higher than OANMX's 0.68% expense ratio.

Dividends

OAKLX vs. OANMX - Dividend Comparison

OAKLX's dividend yield for the trailing twelve months is around 0.39%, less than OANMX's 1.17% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
OAKLX Oakmark Select Fund	0.39%	0.39%	0.31%	0.51%	0.62%	0.70%	0.00%	0.67%	5.04%	4.20%	4.88%	0.30%
OANMX Oakmark Fund Institutional Class	1.17%	1.14%	1.34%	1.22%	1.17%	1.94%	0.33%	8.53%	8.37%	0.66%	0.00%	0.00%

Frequently Asked Questions

Can I hold both OAKLX and OANMX in my portfolio?

OAKLX and OANMX have a correlation of 0.88, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OAKLX or OANMX?

OAKLX has higher volatility (4.44%) compared to OANMX (3.21%). In terms of maximum drawdown, OAKLX dropped -61.15% vs OANMX's -40.08%.

Which has better risk-adjusted returns?

OAKLX currently has the higher Sharpe Ratio (0.89 vs 0.78), 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.