OAKLX vs. NFFFX

Last updated Jun 4, 2026

OAKLX (Oakmark Select Fund) and NFFFX (American Funds New World Fund) are both mutual funds - OAKLX is a Large Cap Value Equities fund managed by Oakmark, while NFFFX is a Emerging Markets Equities fund managed by American Funds. Over the past 10 years, OAKLX returned 10.89%/yr vs 11.32%/yr for NFFFX. A 0.74 correlation means they provide meaningful diversification when combined. OAKLX charges 0.98%/yr vs 0.68%/yr for NFFFX.

Performance

OAKLX vs. NFFFX - Performance Comparison

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

Returns By Period

In the year-to-date period, OAKLX achieves a -0.14% return, which is significantly lower than NFFFX's 17.55% return. Both investments have delivered pretty close results over the past 10 years, with OAKLX having a 10.89% annualized return and NFFFX not far ahead at 11.32%.

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%

NFFFX

• 1D: 0.70%
• 1M: 6.75%
• YTD: 17.55%
• 6M: 19.27%
• 1Y: 36.61%
• 3Y*: 19.82%
• 5Y*: 7.22%
• 10Y*: 11.32%

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

OAKLX vs. NFFFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OAKLX Oakmark Select Fund	-0.14%	14.26%	14.15%	43.02%	-22.51%	34.62%	10.76%	27.70%	-24.90%	15.69%
NFFFX American Funds New World Fund	17.55%	28.52%	6.78%	16.11%	-21.86%	4.98%	25.17%	27.89%	-12.08%	32.92%

Correlation

The correlation between OAKLX and NFFFX is 0.33, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.33
Correlation (3Y) Calculated over the trailing 3-year period	0.52
Correlation (5Y) Calculated over the trailing 5-year period	0.66
Correlation (10Y) Calculated over the trailing 10-year period	0.68
Correlation (All Time) Calculated using the full available price history since Aug 4, 2008	0.74

Over the past year, the correlation between OAKLX and NFFFX has dropped to 0.33 - well below their long-term average of 0.74, suggesting their price drivers have been diverging.

Return for Risk

OAKLX vs. NFFFX — Risk / Return Rank

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

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

NFFFX

NFFFX Risk / Return Rank: 66
NFFFX Sharpe Ratio Rank: 75
NFFFX Sortino Ratio Rank: 70
NFFFX Omega Ratio Rank: 71
NFFFX Calmar Ratio Rank: 55
NFFFX Martin Ratio Rank: 58

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. NFFFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Oakmark Select Fund (OAKLX) and American Funds New World Fund (NFFFX). 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	NFFFX	Difference
Sharpe ratio Return per unit of total volatility	1.07	2.51	-1.44
Sortino ratio Return per unit of downside risk	1.59	3.49	-1.90
Omega ratio Gain probability vs. loss probability	1.20	1.47	-0.28
Calmar ratio Return relative to maximum drawdown	1.26	2.84	-1.58
Martin ratio Return relative to average drawdown	3.34	11.66	-8.31
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. NFFFX - Sharpe Ratio Comparison

The current OAKLX Sharpe Ratio is 1.07, which is lower than the NFFFX Sharpe Ratio of 2.51. The chart below compares the historical Sharpe Ratios of OAKLX and NFFFX, 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	NFFFX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.07	2.51	-1.44
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.44	0.47	-0.03
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.51	0.70	-0.20
Sharpe Ratio (All Time) Calculated using the full available price history	0.58	0.40	+0.19

Drawdowns

OAKLX vs. NFFFX - Drawdown Comparison

The maximum OAKLX drawdown since its inception was -61.15%, which is greater than NFFFX's maximum drawdown of -50.17%. Use the drawdown chart below to compare losses from any high point for OAKLX and NFFFX.

Drawdown Indicators

	OAKLX	NFFFX	Difference
Max Drawdown Largest peak-to-trough decline	-61.15%	-50.17%	-10.98%
Max Drawdown (1Y) Largest decline over 1 year	-12.49%	-13.01%	+0.52%
Max Drawdown (3Y) Largest decline over 3 years	-18.76%	-15.05%	-3.71%
Max Drawdown (5Y) Largest decline over 5 years	-27.87%	-33.48%	+5.61%
Max Drawdown (10Y) Largest decline over 10 years	-48.42%	-33.48%	-14.94%
Current Drawdown Current decline from peak	-2.67%	0.00%	-2.67%
Average Drawdown Average peak-to-trough decline	-8.98%	-9.81%	+0.83%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.71%	3.16%	+1.55%

Volatility

OAKLX vs. NFFFX - Volatility Comparison

The current volatility for Oakmark Select Fund (OAKLX) is 4.20%, while American Funds New World Fund (NFFFX) has a volatility of 5.50%. This indicates that OAKLX experiences smaller price fluctuations and is considered to be less risky than NFFFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OAKLX	NFFFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.20%	5.50%	-1.30%
Volatility (6M) Calculated over the trailing 6-month period	11.05%	12.51%	-1.46%
Volatility (1Y) Calculated over the trailing 1-year period	14.74%	14.73%	+0.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.59%	15.42%	+4.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.57%	16.14%	+5.43%

OAKLX vs. NFFFX - Expense Ratio Comparison

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

Dividends

OAKLX vs. NFFFX - Dividend Comparison

OAKLX's dividend yield for the trailing twelve months is around 0.39%, less than NFFFX's 5.11% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NFFFX American Funds New World Fund	5.11%	6.01%	4.01%	2.78%	1.21%	7.23%	0.35%	3.95%	2.62%	2.17%	1.28%	0.94%
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 NFFFX in my portfolio?

OAKLX and NFFFX have a correlation of 0.33, 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 NFFFX?

NFFFX has higher volatility (5.50%) compared to OAKLX (4.20%). In terms of maximum drawdown, OAKLX dropped -61.15% vs NFFFX's -50.17%.

Which has better risk-adjusted returns?

NFFFX currently has the higher Sharpe Ratio (2.51 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.