ODIIX vs. NEAGX

Last updated Jun 3, 2026

ODIIX (Invesco Discovery Fund Class R6) and NEAGX (Needham Aggressive Growth Fund) are both Small Cap Growth Equities funds. Over the past 10 years, ODIIX returned 16.71%/yr vs 22.12%/yr for NEAGX. Their correlation of 0.84 suggests significant overlap in exposure. ODIIX charges 0.65%/yr vs 1.86%/yr for NEAGX.

Performance

ODIIX vs. NEAGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Discovery Fund Class R6 (ODIIX) and Needham Aggressive Growth Fund (NEAGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ODIIX achieves a 28.09% return, which is significantly lower than NEAGX's 54.53% return. Over the past 10 years, ODIIX has underperformed NEAGX with an annualized return of 16.71%, while NEAGX has yielded a comparatively higher 22.12% annualized return.

ODIIX

• 1D: -1.00%
• 1M: 3.52%
• YTD: 28.09%
• 6M: 29.99%
• 1Y: 54.43%
• 3Y*: 26.31%
• 5Y*: 10.51%
• 10Y*: 16.71%

NEAGX

• 1D: 1.06%
• 1M: 12.81%
• YTD: 54.53%
• 6M: 59.73%
• 1Y: 93.95%
• 3Y*: 37.18%
• 5Y*: 22.53%
• 10Y*: 22.12%

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

ODIIX vs. NEAGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ODIIX Invesco Discovery Fund Class R6	28.09%	17.14%	23.04%	17.46%	-31.00%	15.37%	50.87%	37.36%	-3.68%	29.58%
NEAGX Needham Aggressive Growth Fund	54.53%	26.40%	14.31%	37.65%	-27.53%	37.56%	51.53%	43.82%	-16.09%	8.75%

Correlation

The correlation between ODIIX and NEAGX is 0.76, 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	0.76
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.83
Correlation (All Time) Calculated using the full available price history since Jan 30, 2012	0.84

The correlation between ODIIX and NEAGX has been stable across timeframes, ranging from 0.76 to 0.84 - a consistent structural relationship.

Return for Risk

ODIIX vs. NEAGX — Risk / Return Rank

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

ODIIX

ODIIX Risk / Return Rank: 78
ODIIX Sharpe Ratio Rank: 76
ODIIX Sortino Ratio Rank: 64
ODIIX Omega Ratio Rank: 58
ODIIX Calmar Ratio Rank: 96
ODIIX Martin Ratio Rank: 96

NEAGX

NEAGX Risk / Return Rank: 92
NEAGX Sharpe Ratio Rank: 97
NEAGX Sortino Ratio Rank: 87
NEAGX Omega Ratio Rank: 84
NEAGX Calmar Ratio Rank: 97
NEAGX 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.

ODIIX vs. NEAGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Discovery Fund Class R6 (ODIIX) 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.

	ODIIX	NEAGX	Difference
Sharpe ratio Return per unit of total volatility	2.53	3.67	-1.15
Sortino ratio Return per unit of downside risk	3.35	4.19	-0.85
Omega ratio Gain probability vs. loss probability	1.42	1.56	-0.14
Calmar ratio Return relative to maximum drawdown	6.10	6.60	-0.50
Martin ratio Return relative to average drawdown	25.31	26.66	-1.35
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ODIIX vs. NEAGX - Sharpe Ratio Comparison

The current ODIIX Sharpe Ratio is 2.53, which is lower than the NEAGX Sharpe Ratio of 3.67. The chart below compares the historical Sharpe Ratios of ODIIX and NEAGX, 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

	ODIIX	NEAGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.53	3.67	-1.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.42	0.92	-0.50
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.68	0.92	-0.24
Sharpe Ratio (All Time) Calculated using the full available price history	0.66	0.65	+0.01

Drawdowns

ODIIX vs. NEAGX - Drawdown Comparison

The maximum ODIIX drawdown since its inception was -43.06%, roughly equal to the maximum NEAGX drawdown of -41.80%. Use the drawdown chart below to compare losses from any high point for ODIIX and NEAGX.

Drawdown Indicators

	ODIIX	NEAGX	Difference
Max Drawdown Largest peak-to-trough decline	-43.06%	-41.80%	-1.26%
Max Drawdown (1Y) Largest decline over 1 year	-11.36%	-14.01%	+2.65%
Max Drawdown (3Y) Largest decline over 3 years	-28.52%	-28.49%	-0.03%
Max Drawdown (5Y) Largest decline over 5 years	-43.06%	-36.31%	-6.75%
Max Drawdown (10Y) Largest decline over 10 years	-43.06%	-36.31%	-6.75%
Current Drawdown Current decline from peak	-2.52%	-0.07%	-2.45%
Average Drawdown Average peak-to-trough decline	-10.17%	-8.67%	-1.50%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.74%	3.47%	-0.73%

Volatility

ODIIX vs. NEAGX - Volatility Comparison

The current volatility for Invesco Discovery Fund Class R6 (ODIIX) is 7.53%, while Needham Aggressive Growth Fund (NEAGX) has a volatility of 9.81%. This indicates that ODIIX 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

	ODIIX	NEAGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.53%	9.81%	-2.28%
Volatility (6M) Calculated over the trailing 6-month period	21.38%	20.26%	+1.12%
Volatility (1Y) Calculated over the trailing 1-year period	25.18%	25.69%	-0.51%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.52%	24.53%	+0.99%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.91%	24.13%	+0.78%

ODIIX vs. NEAGX - Expense Ratio Comparison

ODIIX has a 0.65% expense ratio, which is lower than NEAGX's 1.86% expense ratio.

Dividends

ODIIX vs. NEAGX - Dividend Comparison

ODIIX's dividend yield for the trailing twelve months is around 7.76%, more than NEAGX's 1.38% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
NEAGX Needham Aggressive Growth Fund	1.38%	2.14%	0.00%	0.00%	0.00%	7.10%	3.91%	10.64%	16.57%	5.17%	6.72%	11.88%
ODIIX Invesco Discovery Fund Class R6	7.76%	9.94%	5.27%	0.00%	0.00%	16.15%	9.22%	5.40%	16.05%	10.90%	3.86%	6.15%

Frequently Asked Questions

Can I hold both ODIIX and NEAGX in my portfolio?

ODIIX and NEAGX have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, ODIIX or NEAGX?

NEAGX has higher volatility (9.81%) compared to ODIIX (7.53%). In terms of maximum drawdown, ODIIX dropped -43.06% vs NEAGX's -41.80%.

Which has better risk-adjusted returns?

NEAGX currently has the higher Sharpe Ratio (3.67 vs 2.53), 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.