WMKSX vs. NEAIX

Last updated Jun 3, 2026

WMKSX (WesMark Small Company Fund) and NEAIX (Needham Aggressive Growth Fund Institutional Class) are both Small Cap Growth Equities funds. Over the past 5 years, WMKSX returned 10.25%/yr vs 23.19%/yr for NEAIX. Their correlation of 0.82 suggests significant overlap in exposure. WMKSX charges 1.24%/yr vs 1.20%/yr for NEAIX.

Performance

WMKSX vs. NEAIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WesMark Small Company Fund (WMKSX) and Needham Aggressive Growth Fund Institutional Class (NEAIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, WMKSX achieves a 15.00% return, which is significantly lower than NEAIX's 54.77% return.

WMKSX

• 1D: -0.18%
• 1M: 1.63%
• YTD: 15.00%
• 6M: 14.59%
• 1Y: 32.75%
• 3Y*: 23.52%
• 5Y*: 10.25%
• 10Y*: 13.21%

NEAIX

• 1D: 1.05%
• 1M: 12.83%
• YTD: 54.77%
• 6M: 60.01%
• 1Y: 94.71%
• 3Y*: 37.81%
• 5Y*: 23.19%
• 10Y*: —

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

WMKSX vs. NEAIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WMKSX WesMark Small Company Fund	15.00%	16.19%	22.12%	19.42%	-20.72%	22.81%	36.78%	20.32%	-13.92%	12.37%
NEAIX Needham Aggressive Growth Fund Institutional Class	54.77%	26.99%	14.86%	38.37%	-27.02%	38.46%	52.49%	44.68%	-15.64%	10.07%

Correlation

The correlation between WMKSX and NEAIX is 0.82, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.82
Correlation (5Y) Calculated over the trailing 5-year period	0.83
Correlation (All Time) Calculated using the full available price history since Jan 4, 2017	0.82

The correlation between WMKSX and NEAIX has been stable across timeframes, ranging from 0.82 to 0.83 - a consistent structural relationship.

Return for Risk

WMKSX vs. NEAIX — Risk / Return Rank

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

WMKSX

WMKSX Risk / Return Rank: 52
WMKSX Sharpe Ratio Rank: 40
WMKSX Sortino Ratio Rank: 39
WMKSX Omega Ratio Rank: 35
WMKSX Calmar Ratio Rank: 82
WMKSX Martin Ratio Rank: 65

NEAIX

NEAIX Risk / Return Rank: 93
NEAIX Sharpe Ratio Rank: 97
NEAIX Sortino Ratio Rank: 88
NEAIX Omega Ratio Rank: 84
NEAIX Calmar Ratio Rank: 97
NEAIX Martin Ratio Rank: 97

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.

WMKSX vs. NEAIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WesMark Small Company Fund (WMKSX) and Needham Aggressive Growth Fund Institutional Class (NEAIX). 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.

	WMKSX	NEAIX	Difference
Sharpe ratio Return per unit of total volatility	1.85	3.71	-1.86
Sortino ratio Return per unit of downside risk	2.61	4.22	-1.61
Omega ratio Gain probability vs. loss probability	1.31	1.57	-0.25
Calmar ratio Return relative to maximum drawdown	3.80	6.67	-2.87
Martin ratio Return relative to average drawdown	12.72	26.99	-14.28
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WMKSX vs. NEAIX - Sharpe Ratio Comparison

The current WMKSX Sharpe Ratio is 1.85, which is lower than the NEAIX Sharpe Ratio of 3.71. The chart below compares the historical Sharpe Ratios of WMKSX and NEAIX, 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

	WMKSX	NEAIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.85	3.71	-1.86
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.39	0.95	-0.55
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.55	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.37	0.90	-0.52

Drawdowns

WMKSX vs. NEAIX - Drawdown Comparison

The maximum WMKSX drawdown since its inception was -64.09%, which is greater than NEAIX's maximum drawdown of -35.93%. Use the drawdown chart below to compare losses from any high point for WMKSX and NEAIX.

Drawdown Indicators

	WMKSX	NEAIX	Difference
Max Drawdown Largest peak-to-trough decline	-64.09%	-35.93%	-28.16%
Max Drawdown (1Y) Largest decline over 1 year	-8.50%	-13.98%	+5.48%
Max Drawdown (3Y) Largest decline over 3 years	-24.20%	-28.21%	+4.01%
Max Drawdown (5Y) Largest decline over 5 years	-39.84%	-35.93%	-3.91%
Max Drawdown (10Y) Largest decline over 10 years	-39.84%	—	—
Current Drawdown Current decline from peak	-0.94%	-0.07%	-0.87%
Average Drawdown Average peak-to-trough decline	-15.68%	-8.60%	-7.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.54%	3.46%	-0.92%

Volatility

WMKSX vs. NEAIX - Volatility Comparison

The current volatility for WesMark Small Company Fund (WMKSX) is 4.74%, while Needham Aggressive Growth Fund Institutional Class (NEAIX) has a volatility of 9.80%. This indicates that WMKSX experiences smaller price fluctuations and is considered to be less risky than NEAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WMKSX	NEAIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.74%	9.80%	-5.06%
Volatility (6M) Calculated over the trailing 6-month period	12.05%	20.25%	-8.20%
Volatility (1Y) Calculated over the trailing 1-year period	17.73%	25.68%	-7.95%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	26.10%	24.54%	+1.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.97%	24.58%	-0.61%

WMKSX vs. NEAIX - Expense Ratio Comparison

WMKSX has a 1.24% expense ratio, which is higher than NEAIX's 1.20% expense ratio.

Dividends

WMKSX vs. NEAIX - Dividend Comparison

WMKSX's dividend yield for the trailing twelve months is around 19.92%, more than NEAIX's 1.30% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NEAIX Needham Aggressive Growth Fund Institutional Class	1.30%	2.01%	0.00%	0.00%	0.00%	6.84%	3.80%	10.42%	16.35%	5.14%	0.00%	0.00%
WMKSX WesMark Small Company Fund	19.92%	22.91%	4.69%	5.93%	6.23%	25.75%	8.21%	0.00%	12.53%	8.59%	5.26%	6.57%

Frequently Asked Questions

Can I hold both WMKSX and NEAIX in my portfolio?

WMKSX and NEAIX have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WMKSX or NEAIX?

NEAIX has higher volatility (9.80%) compared to WMKSX (4.74%). In terms of maximum drawdown, WMKSX dropped -64.09% vs NEAIX's -35.93%.

Which has better risk-adjusted returns?

NEAIX currently has the higher Sharpe Ratio (3.71 vs 1.85), 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.