INDEX vs. OAKLX

Last updated Jun 24, 2026

INDEX (CYBER HORNET S&P 500) and OAKLX (Oakmark Select Fund) are both mutual funds - INDEX is a S&P 500 fund tracking the S&P 500 Index, while OAKLX is a Large Cap Value Equities fund managed by Oakmark. Over the past 10 years, INDEX returned 13.29%/yr vs 10.96%/yr for OAKLX. Their correlation of 0.85 suggests significant overlap in exposure. INDEX charges 0.25%/yr vs 0.98%/yr for OAKLX.

Performance

INDEX vs. OAKLX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in CYBER HORNET S&P 500 (INDEX) 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, INDEX achieves a 9.65% return, which is significantly higher than OAKLX's -2.65% return. Over the past 10 years, INDEX has outperformed OAKLX with an annualized return of 13.29%, while OAKLX has yielded a comparatively lower 10.96% annualized return.

INDEX

• 1D: -0.37%
• 1M: 0.11%
• YTD: 9.65%
• 6M: 8.70%
• 1Y: 25.41%
• 3Y*: 19.79%
• 5Y*: 11.53%
• 10Y*: 13.29%

OAKLX

• 1D: 0.00%
• 1M: -0.25%
• YTD: -2.65%
• 6M: -3.08%
• 1Y: 10.07%
• 3Y*: 14.71%
• 5Y*: 8.75%
• 10Y*: 10.96%

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

INDEX vs. OAKLX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
INDEX CYBER HORNET S&P 500	9.65%	17.77%	24.73%	10.58%	-11.84%	29.10%	12.75%	28.98%	-7.83%	18.70%
OAKLX Oakmark Select Fund	-2.65%	14.26%	14.15%	43.02%	-22.51%	34.62%	10.76%	27.70%	-24.90%	15.69%

Correlation

The correlation between INDEX and OAKLX is 0.50, 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	0.50
Correlation (3Y) Calculated over the trailing 3-year period	0.68
Correlation (5Y) Calculated over the trailing 5-year period	0.80
Correlation (10Y) Calculated over the trailing 10-year period	0.84
Correlation (All Time) Calculated using the full available price history since May 11, 2015	0.85

Over the past year, the correlation between INDEX and OAKLX has dropped to 0.50 - well below their long-term average of 0.85, suggesting their price drivers have been diverging.

Return for Risk

INDEX vs. OAKLX — Risk / Return Rank

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

INDEX

INDEX Risk / Return Rank: 65
INDEX Sharpe Ratio Rank: 63
INDEX Sortino Ratio Rank: 57
INDEX Omega Ratio Rank: 59
INDEX Calmar Ratio Rank: 67
INDEX Martin Ratio Rank: 78

OAKLX

OAKLX Risk / Return Rank: 8
OAKLX Sharpe Ratio Rank: 8
OAKLX Sortino Ratio Rank: 9
OAKLX Omega Ratio Rank: 9
OAKLX Calmar Ratio Rank: 9
OAKLX Martin Ratio Rank: 8

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.

INDEX vs. OAKLX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for CYBER HORNET S&P 500 (INDEX) 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.

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.

	INDEX	OAKLX	Difference
Sharpe ratio: Return per unit of total volatility	2.15	0.66	+1.49
Sortino ratio: Return per unit of downside risk	2.91	1.03	+1.88
Omega ratio: Gain probability vs. loss probability	1.39	1.13	+0.26
Calmar ratio: Return relative to maximum drawdown	3.00	0.79	+2.21
Martin ratio: Return relative to average drawdown	13.57	2.06	+11.51

INDEX vs. OAKLX - Sharpe Ratio Comparison

The current INDEX Sharpe Ratio is 2.15, which is higher than the OAKLX Sharpe Ratio of 0.66. The chart below compares the historical Sharpe Ratios of INDEX 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.

Drawdowns

INDEX vs. OAKLX - Drawdown Comparison

The maximum INDEX drawdown since its inception was -38.82%, smaller than the maximum OAKLX drawdown of -61.15%. Use the drawdown chart below to compare losses from any high point for INDEX and OAKLX.

Drawdown Indicators

	INDEX	OAKLX	Difference
Max Drawdown Largest peak-to-trough decline	-38.82%	-61.15%	+22.33%
Max Drawdown (1Y) Largest decline over 1 year	-8.93%	-12.49%	+3.56%
Max Drawdown (3Y) Largest decline over 3 years	-18.75%	-18.76%	+0.01%
Max Drawdown (5Y) Largest decline over 5 years	-21.52%	-27.87%	+6.35%
Max Drawdown (10Y) Largest decline over 10 years	-38.82%	-48.42%	+9.60%
Current Drawdown Current decline from peak	-1.70%	-5.12%	+3.42%
Average Drawdown Average peak-to-trough decline	-4.62%	-8.97%	+4.35%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.97%	4.76%	-2.79%

Volatility

INDEX vs. OAKLX - Volatility Comparison

CYBER HORNET S&P 500 (INDEX) and Oakmark Select Fund (OAKLX) have volatilities of 4.71% and 4.72%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	INDEX	OAKLX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.71%	4.72%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	9.85%	11.08%	-1.23%
Volatility (1Y) Calculated over the trailing 1-year period	12.47%	14.89%	-2.42%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.83%	19.59%	-2.76%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.69%	21.58%	-2.89%

INDEX vs. OAKLX - Expense Ratio Comparison

INDEX has a 0.25% expense ratio, which is lower than OAKLX's 0.98% expense ratio.

Dividends

INDEX vs. OAKLX - Dividend Comparison

INDEX's dividend yield for the trailing twelve months is around 0.95%, more than OAKLX's 0.40% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
INDEX CYBER HORNET S&P 500	0.95%	1.04%	1.97%	1.56%	3.25%	1.81%	1.53%	1.61%	3.09%	1.15%	0.00%	0.00%
OAKLX Oakmark Select Fund	0.40%	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 INDEX and OAKLX in my portfolio?

INDEX and OAKLX have a correlation of 0.50, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, INDEX or OAKLX?

OAKLX has higher volatility (4.72%) compared to INDEX (4.71%). In terms of maximum drawdown, INDEX dropped -38.82% vs OAKLX's -61.15%.

Which has better risk-adjusted returns?

INDEX currently has the higher Sharpe Ratio (2.15 vs 0.66), 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.