OAKLX vs. GRPM

Last updated Jun 5, 2026

OAKLX (Oakmark Select Fund) and GRPM (Invesco S&P MidCap 400® GARP ETF) are both funds - OAKLX is a Large Cap Value Equities fund managed by Oakmark, while GRPM is a Mid Cap Blend Equities fund tracking the S&P MidCap 400® GARP Index. Over the past 10 years, OAKLX returned 10.74%/yr vs 10.99%/yr for GRPM. Their correlation of 0.85 suggests significant overlap in exposure. OAKLX charges 0.98%/yr vs 0.35%/yr for GRPM.

Performance

OAKLX vs. GRPM - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Oakmark Select Fund (OAKLX) and Invesco S&P MidCap 400® GARP ETF (GRPM). 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 lower than GRPM's 8.28% return. Both investments have delivered pretty close results over the past 10 years, with OAKLX having a 10.74% annualized return and GRPM not far ahead at 10.99%.

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%

GRPM

• 1D: 1.09%
• 1M: 2.14%
• YTD: 8.28%
• 6M: 7.33%
• 1Y: 24.17%
• 3Y*: 15.72%
• 5Y*: 7.89%
• 10Y*: 10.99%

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

OAKLX vs. GRPM - 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%	15.69%
GRPM Invesco S&P MidCap 400® GARP ETF	8.28%	7.81%	15.67%	18.79%	-11.63%	26.35%	15.60%	23.05%	-12.45%	13.05%

Correlation

The correlation between OAKLX and GRPM is 0.74, 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	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.80
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (10Y) Calculated over the trailing 10-year period	0.85
Correlation (All Time) Calculated using the full available price history since Dec 9, 2010	0.85

The correlation between OAKLX and GRPM shifts across timeframes, from 0.74 (1 year) to 0.85 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

OAKLX vs. GRPM — 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

GRPM

GRPM Risk / Return Rank: 50
GRPM Sharpe Ratio Rank: 44
GRPM Sortino Ratio Rank: 45
GRPM Omega Ratio Rank: 41
GRPM Calmar Ratio Rank: 65
GRPM Martin Ratio Rank: 55

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. GRPM - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Oakmark Select Fund (OAKLX) and Invesco S&P MidCap 400® GARP ETF (GRPM). 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	GRPM	Difference
Sharpe ratio: Return per unit of total volatility	0.89	1.51	-0.62
Sortino ratio: Return per unit of downside risk	1.35	2.22	-0.87
Omega ratio: Gain probability vs. loss probability	1.17	1.26	-0.10
Calmar ratio: Return relative to maximum drawdown	1.06	3.19	-2.13
Martin ratio: Return relative to average drawdown	2.80	9.42	-6.63
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. GRPM - Sharpe Ratio Comparison

The current OAKLX Sharpe Ratio is 0.89, which is lower than the GRPM Sharpe Ratio of 1.51. The chart below compares the historical Sharpe Ratios of OAKLX and GRPM, 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	GRPM	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.89	1.51	-0.62
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.42	0.38	+0.04
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.50	0.50	0.00
Sharpe Ratio (All Time) Calculated using the full available price history	0.58	0.55	+0.03

Drawdowns

OAKLX vs. GRPM - Drawdown Comparison

The maximum OAKLX drawdown since its inception was -61.15%, which is greater than GRPM's maximum drawdown of -43.12%. Use the drawdown chart below to compare losses from any high point for OAKLX and GRPM.

Drawdown Indicators

	OAKLX	GRPM	Difference
Max Drawdown Largest peak-to-trough decline	-61.15%	-43.12%	-18.03%
Max Drawdown (1Y) Largest decline over 1 year	-12.49%	-7.62%	-4.87%
Max Drawdown (3Y) Largest decline over 3 years	-18.76%	-28.09%	+9.33%
Max Drawdown (5Y) Largest decline over 5 years	-27.87%	-28.09%	+0.22%
Max Drawdown (10Y) Largest decline over 10 years	-48.42%	-43.12%	-5.30%
Current Drawdown Current decline from peak	-3.93%	0.00%	-3.93%
Average Drawdown Average peak-to-trough decline	-8.98%	-5.71%	-3.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.71%	2.57%	+2.14%

Volatility

OAKLX vs. GRPM - Volatility Comparison

Oakmark Select Fund (OAKLX) has a higher volatility of 4.44% compared to Invesco S&P MidCap 400® GARP ETF (GRPM) at 3.77%. This indicates that OAKLX's price experiences larger fluctuations and is considered to be riskier than GRPM based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OAKLX	GRPM	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.44%	3.77%	+0.67%
Volatility (6M) Calculated over the trailing 6-month period	11.13%	10.45%	+0.68%
Volatility (1Y) Calculated over the trailing 1-year period	14.80%	16.05%	-1.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.59%	20.90%	-1.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.57%	22.25%	-0.68%

OAKLX vs. GRPM - Expense Ratio Comparison

OAKLX has a 0.98% expense ratio, which is higher than GRPM's 0.35% expense ratio.

Dividends

OAKLX vs. GRPM - Dividend Comparison

OAKLX's dividend yield for the trailing twelve months is around 0.39%, less than GRPM's 0.95% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
GRPM Invesco S&P MidCap 400® GARP ETF	0.95%	1.19%	0.95%	0.96%	1.28%	0.92%	1.16%	1.25%	1.50%	1.14%	1.00%	1.43%
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%

Frequently Asked Questions

Can I hold both OAKLX and GRPM in my portfolio?

OAKLX and GRPM have a correlation of 0.74, 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 GRPM?

OAKLX has higher volatility (4.44%) compared to GRPM (3.77%). In terms of maximum drawdown, OAKLX dropped -61.15% vs GRPM's -43.12%.

Which has better risk-adjusted returns?

GRPM currently has the higher Sharpe Ratio (1.51 vs 0.89), 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.