OAKEX vs. NEAGX

Last updated Apr 2, 2026

Compare and contrast key facts about Oakmark International Small Cap Fund (OAKEX) and Needham Aggressive Growth Fund (NEAGX).

OAKEX is managed by Oakmark. It was launched on Oct 31, 1995. NEAGX is managed by Needham. It was launched on Sep 4, 2001.

Performance

OAKEX vs. NEAGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Oakmark International Small Cap Fund (OAKEX) and Needham Aggressive Growth Fund (NEAGX). The values are adjusted to include any dividend payments, if applicable.

OAKEX vs. NEAGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OAKEX Oakmark International Small Cap Fund	-8.12%	29.51%	-3.00%	19.59%	-14.50%	17.90%	5.00%	31.91%	-23.71%	26.03%
NEAGX Needham Aggressive Growth Fund	11.92%	26.40%	14.31%	37.65%	-27.53%	37.56%	51.53%	43.82%	-16.09%	8.75%

Returns By Period

In the year-to-date period, OAKEX achieves a -8.12% return, which is significantly lower than NEAGX's 11.92% return. Over the past 10 years, OAKEX has underperformed NEAGX with an annualized return of 7.23%, while NEAGX has yielded a comparatively higher 18.04% annualized return.

OAKEX

• 1D: 2.49%
• 1M: -8.66%
• YTD: -8.12%
• 6M: -6.97%
• 1Y: 9.88%
• 3Y*: 9.01%
• 5Y*: 4.30%
• 10Y*: 7.23%

NEAGX

• 1D: 4.33%
• 1M: -7.75%
• YTD: 11.92%
• 6M: 14.19%
• 1Y: 60.51%
• 3Y*: 26.85%
• 5Y*: 15.03%
• 10Y*: 18.04%

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

OAKEX vs. NEAGX - Expense Ratio Comparison

OAKEX has a 1.34% expense ratio, which is lower than NEAGX's 1.86% expense ratio.

NEAGX

Needham Aggressive Growth Fund

OAKEX

Oakmark International Small Cap Fund

Return for Risk

OAKEX vs. NEAGX — Risk / Return Rank

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

OAKEX

OAKEX Risk / Return Rank: 17
OAKEX Sharpe Ratio Rank: 21
OAKEX Sortino Ratio Rank: 19
OAKEX Omega Ratio Rank: 18
OAKEX Calmar Ratio Rank: 14
OAKEX Martin Ratio Rank: 14

NEAGX

NEAGX Risk / Return Rank: 93
NEAGX Sharpe Ratio Rank: 94
NEAGX Sortino Ratio Rank: 91
NEAGX Omega Ratio Rank: 87
NEAGX Calmar Ratio Rank: 97
NEAGX Martin Ratio Rank: 96

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.

OAKEX vs. NEAGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Oakmark International Small Cap Fund (OAKEX) and Needham Aggressive Growth Fund (NEAGX). 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.

	OAKEX	NEAGX	Difference
Sharpe ratio Return per unit of total volatility	0.60	2.14	-1.54
Sortino ratio Return per unit of downside risk	0.91	2.71	-1.80
Omega ratio Gain probability vs. loss probability	1.12	1.38	-0.25
Calmar ratio Return relative to maximum drawdown	0.45	4.27	-3.82
Martin ratio Return relative to average drawdown	1.55	15.19	-13.64
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

OAKEX vs. NEAGX - Sharpe Ratio Comparison

The current OAKEX Sharpe Ratio is 0.60, which is lower than the NEAGX Sharpe Ratio of 2.14. The chart below compares the historical Sharpe Ratios of OAKEX and NEAGX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	OAKEX	NEAGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.60	2.14	-1.54
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.25	0.62	-0.38
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.39	0.76	-0.37
Sharpe Ratio (All Time) Calculated using the full available price history	0.42	0.59	-0.17

Correlation

The correlation between OAKEX and NEAGX is 0.52, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

OAKEX vs. NEAGX - Dividend Comparison

OAKEX's dividend yield for the trailing twelve months is around 5.71%, more than NEAGX's 1.91% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
OAKEX Oakmark International Small Cap Fund	5.71%	5.24%	6.38%	1.83%	1.89%	0.61%	1.87%	0.21%	8.93%	3.64%	3.09%	5.06%
NEAGX Needham Aggressive Growth Fund	1.91%	2.14%	0.00%	0.00%	0.00%	7.10%	3.91%	10.64%	16.57%	5.17%	6.72%	11.88%

Drawdowns

OAKEX vs. NEAGX - Drawdown Comparison

The maximum OAKEX drawdown since its inception was -70.12%, which is greater than NEAGX's maximum drawdown of -41.80%. Use the drawdown chart below to compare losses from any high point for OAKEX and NEAGX.

Drawdown Indicators

	OAKEX	NEAGX	Difference
Max Drawdown Largest peak-to-trough decline	-70.12%	-41.80%	-28.32%
Max Drawdown (1Y) Largest decline over 1 year	-17.18%	-14.01%	-3.17%
Max Drawdown (5Y) Largest decline over 5 years	-38.40%	-36.31%	-2.09%
Max Drawdown (10Y) Largest decline over 10 years	-49.61%	-36.31%	-13.30%
Current Drawdown Current decline from peak	-12.85%	-7.75%	-5.10%
Average Drawdown Average peak-to-trough decline	-13.53%	-8.72%	-4.81%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.98%	3.93%	+1.05%

Volatility

OAKEX vs. NEAGX - Volatility Comparison

The current volatility for Oakmark International Small Cap Fund (OAKEX) is 6.45%, while Needham Aggressive Growth Fund (NEAGX) has a volatility of 11.64%. This indicates that OAKEX experiences smaller price fluctuations and is considered to be less risky than NEAGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OAKEX	NEAGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.45%	11.64%	-5.19%
Volatility (6M) Calculated over the trailing 6-month period	10.96%	19.84%	-8.88%
Volatility (1Y) Calculated over the trailing 1-year period	16.66%	28.93%	-12.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.61%	24.33%	-6.72%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.60%	23.90%	-5.30%