OEGYX vs. OAKLX

Last updated Jun 4, 2026

OEGYX (Invesco Discovery Mid Cap Growth Fund) and OAKLX (Oakmark Select Fund) are both mutual funds - OEGYX is a Mid Cap Growth Equities fund managed by Invesco, while OAKLX is a Large Cap Value Equities fund managed by Oakmark. Over the past 10 years, OEGYX returned 13.79%/yr vs 10.89%/yr for OAKLX. A 0.73 correlation means they provide meaningful diversification when combined. OEGYX charges 0.78%/yr vs 0.98%/yr for OAKLX.

Performance

OEGYX vs. OAKLX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Discovery Mid Cap Growth Fund (OEGYX) and Oakmark Select Fund (OAKLX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OEGYX achieves a 26.11% return, which is significantly higher than OAKLX's -0.14% return. Over the past 10 years, OEGYX has outperformed OAKLX with an annualized return of 13.79%, while OAKLX has yielded a comparatively lower 10.89% annualized return.

OEGYX

• 1D: 2.37%
• 1M: 5.88%
• YTD: 26.11%
• 6M: 23.35%
• 1Y: 33.88%
• 3Y*: 21.12%
• 5Y*: 8.35%
• 10Y*: 13.79%

OAKLX

• 1D: -1.16%
• 1M: 2.78%
• YTD: -0.14%
• 6M: 3.55%
• 1Y: 14.65%
• 3Y*: 15.87%
• 5Y*: 8.63%
• 10Y*: 10.89%

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

OEGYX vs. OAKLX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OEGYX Invesco Discovery Mid Cap Growth Fund	26.11%	5.08%	24.38%	13.24%	-30.92%	18.76%	40.53%	39.33%	-6.50%	28.34%
OAKLX Oakmark Select Fund	-0.14%	14.26%	14.15%	43.02%	-22.51%	34.62%	10.76%	27.70%	-24.90%	15.69%

Correlation

The correlation between OEGYX and OAKLX is 0.32, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.32
Correlation (3Y) Calculated over the trailing 3-year period	0.57
Correlation (5Y) Calculated over the trailing 5-year period	0.67
Correlation (10Y) Calculated over the trailing 10-year period	0.66
Correlation (All Time) Calculated using the full available price history since Nov 1, 2000	0.73

Over the past year, the correlation between OEGYX and OAKLX has dropped to 0.32 - well below their long-term average of 0.73, suggesting their price drivers have been diverging.

Return for Risk

OEGYX vs. OAKLX — Risk / Return Rank

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

OEGYX

OEGYX Risk / Return Rank: 48
OEGYX Sharpe Ratio Rank: 36
OEGYX Sortino Ratio Rank: 32
OEGYX Omega Ratio Rank: 32
OEGYX Calmar Ratio Rank: 76
OEGYX Martin Ratio Rank: 64

OAKLX

OAKLX Risk / Return Rank: 14
OAKLX Sharpe Ratio Rank: 15
OAKLX Sortino Ratio Rank: 15
OAKLX Omega Ratio Rank: 15
OAKLX Calmar Ratio Rank: 14
OAKLX Martin Ratio Rank: 11

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.

OEGYX vs. OAKLX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Discovery Mid Cap Growth Fund (OEGYX) and Oakmark Select Fund (OAKLX). 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.

	OEGYX	OAKLX	Difference
Sharpe ratio Return per unit of total volatility	1.72	1.07	+0.65
Sortino ratio Return per unit of downside risk	2.35	1.59	+0.76
Omega ratio Gain probability vs. loss probability	1.30	1.20	+0.10
Calmar ratio Return relative to maximum drawdown	3.45	1.26	+2.19
Martin ratio Return relative to average drawdown	12.51	3.34	+9.17
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

OEGYX vs. OAKLX - Sharpe Ratio Comparison

The current OEGYX Sharpe Ratio is 1.72, which is higher than the OAKLX Sharpe Ratio of 1.07. The chart below compares the historical Sharpe Ratios of OEGYX and OAKLX, 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

	OEGYX	OAKLX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.72	1.07	+0.65
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.38	0.44	-0.06
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.63	0.51	+0.12
Sharpe Ratio (All Time) Calculated using the full available price history	0.39	0.58	-0.19

Drawdowns

OEGYX vs. OAKLX - Drawdown Comparison

The maximum OEGYX drawdown since its inception was -53.44%, smaller than the maximum OAKLX drawdown of -61.15%. Use the drawdown chart below to compare losses from any high point for OEGYX and OAKLX.

Drawdown Indicators

	OEGYX	OAKLX	Difference
Max Drawdown Largest peak-to-trough decline	-53.44%	-61.15%	+7.71%
Max Drawdown (1Y) Largest decline over 1 year	-10.14%	-12.49%	+2.35%
Max Drawdown (3Y) Largest decline over 3 years	-28.58%	-18.76%	-9.82%
Max Drawdown (5Y) Largest decline over 5 years	-39.25%	-27.87%	-11.38%
Max Drawdown (10Y) Largest decline over 10 years	-39.25%	-48.42%	+9.17%
Current Drawdown Current decline from peak	0.00%	-2.67%	+2.67%
Average Drawdown Average peak-to-trough decline	-12.50%	-8.98%	-3.52%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.79%	4.71%	-1.92%

Volatility

OEGYX vs. OAKLX - Volatility Comparison

Invesco Discovery Mid Cap Growth Fund (OEGYX) has a higher volatility of 6.46% compared to Oakmark Select Fund (OAKLX) at 4.20%. This indicates that OEGYX's price experiences larger fluctuations and is considered to be riskier than OAKLX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OEGYX	OAKLX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.46%	4.20%	+2.26%
Volatility (6M) Calculated over the trailing 6-month period	16.63%	11.05%	+5.58%
Volatility (1Y) Calculated over the trailing 1-year period	20.32%	14.74%	+5.58%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.10%	19.59%	+2.51%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.05%	21.57%	+0.48%

OEGYX vs. OAKLX - Expense Ratio Comparison

OEGYX has a 0.78% expense ratio, which is lower than OAKLX's 0.98% expense ratio.

Dividends

OEGYX vs. OAKLX - Dividend Comparison

OEGYX's dividend yield for the trailing twelve months is around 5.91%, more than OAKLX's 0.39% 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%
OEGYX Invesco Discovery Mid Cap Growth Fund	5.91%	7.45%	4.13%	0.00%	0.00%	16.02%	3.08%	3.85%	9.31%	8.34%	0.81%	3.88%

Frequently Asked Questions

Can I hold both OEGYX and OAKLX in my portfolio?

OEGYX and OAKLX have a correlation of 0.32, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OEGYX or OAKLX?

OEGYX has higher volatility (6.46%) compared to OAKLX (4.20%). In terms of maximum drawdown, OEGYX dropped -53.44% vs OAKLX's -61.15%.

Which has better risk-adjusted returns?

OEGYX currently has the higher Sharpe Ratio (1.72 vs 1.07), 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.