OEGAX vs. ACSTX

Last updated Jun 23, 2026

OEGAX (Invesco Discovery Mid Cap Growth Fund Class A) and ACSTX (Invesco Comstock Fund) are both mutual funds - OEGAX is a Mid Cap Growth Equities fund actively managed by Invesco, while ACSTX is a Large Cap Value Equities fund managed by Invesco. Over the past 10 years, OEGAX returned 13.54%/yr vs 12.76%/yr for ACSTX. A 0.73 correlation means they provide meaningful diversification when combined. OEGAX charges 1.05%/yr vs 0.80%/yr for ACSTX.

Performance

OEGAX vs. ACSTX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Discovery Mid Cap Growth Fund Class A (OEGAX) and Invesco Comstock Fund (ACSTX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OEGAX achieves a 26.40% return, which is significantly higher than ACSTX's 9.89% return. Over the past 10 years, OEGAX has outperformed ACSTX with an annualized return of 13.54%, while ACSTX has yielded a comparatively lower 12.76% annualized return.

OEGAX

• 1D: 1.46%
• 1M: 3.69%
• YTD: 26.40%
• 6M: 23.20%
• 1Y: 32.06%
• 3Y*: 19.97%
• 5Y*: 7.60%
• 10Y*: 13.54%

ACSTX

• 1D: 0.24%
• 1M: 0.51%
• YTD: 9.89%
• 6M: 9.50%
• 1Y: 23.09%
• 3Y*: 17.20%
• 5Y*: 13.32%
• 10Y*: 12.76%

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

OEGAX vs. ACSTX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OEGAX Invesco Discovery Mid Cap Growth Fund Class A	26.40%	4.85%	24.09%	12.96%	-31.09%	18.44%	40.12%	38.98%	-6.72%	27.95%
ACSTX Invesco Comstock Fund	9.89%	17.22%	15.00%	12.37%	0.74%	33.33%	-0.78%	24.35%	-12.34%	17.75%

Correlation

The correlation between OEGAX and ACSTX is 0.50, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.50
Correlation (3Y) Calculated over the trailing 3-year period	0.62
Correlation (5Y) Calculated over the trailing 5-year period	0.67
Correlation (10Y) Calculated over the trailing 10-year period	0.63
Correlation (All Time) Calculated using the full available price history since Oct 31, 2000	0.73

Over the past year, the correlation between OEGAX and ACSTX has dropped to 0.50 - well below their long-term average of 0.73, suggesting their price drivers have been diverging.

Return for Risk

OEGAX vs. ACSTX — Risk / Return Rank

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

OEGAX

OEGAX Risk / Return Rank: 52
OEGAX Sharpe Ratio Rank: 38
OEGAX Sortino Ratio Rank: 36
OEGAX Omega Ratio Rank: 35
OEGAX Calmar Ratio Rank: 81
OEGAX Martin Ratio Rank: 71

ACSTX

ACSTX Risk / Return Rank: 60
ACSTX Sharpe Ratio Rank: 60
ACSTX Sortino Ratio Rank: 64
ACSTX Omega Ratio Rank: 56
ACSTX Calmar Ratio Rank: 62
ACSTX 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.

OEGAX vs. ACSTX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Discovery Mid Cap Growth Fund Class A (OEGAX) and Invesco Comstock Fund (ACSTX). 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.

	OEGAX	ACSTX	Difference
Sharpe ratio: Return per unit of total volatility	1.65	2.10	-0.45
Sortino ratio: Return per unit of downside risk	2.34	3.04	-0.70
Omega ratio: Gain probability vs. loss probability	1.29	1.38	-0.08
Calmar ratio: Return relative to maximum drawdown	3.56	2.90	+0.66
Martin ratio: Return relative to average drawdown	12.68	10.98	+1.70

OEGAX vs. ACSTX - Sharpe Ratio Comparison

The current OEGAX Sharpe Ratio is 1.65, which is comparable to the ACSTX Sharpe Ratio of 2.10. The chart below compares the historical Sharpe Ratios of OEGAX and ACSTX, 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

OEGAX vs. ACSTX - Drawdown Comparison

The maximum OEGAX drawdown since its inception was -53.73%, smaller than the maximum ACSTX drawdown of -58.61%. Use the drawdown chart below to compare losses from any high point for OEGAX and ACSTX.

Drawdown Indicators

	OEGAX	ACSTX	Difference
Max Drawdown Largest peak-to-trough decline	-53.73%	-58.61%	+4.88%
Max Drawdown (1Y) Largest decline over 1 year	-10.16%	-8.02%	-2.14%
Max Drawdown (3Y) Largest decline over 3 years	-28.64%	-15.61%	-13.03%
Max Drawdown (5Y) Largest decline over 5 years	-39.38%	-17.25%	-22.13%
Max Drawdown (10Y) Largest decline over 10 years	-39.38%	-44.80%	+5.42%
Current Drawdown Current decline from peak	-0.67%	-1.23%	+0.56%
Average Drawdown Average peak-to-trough decline	-12.76%	-9.34%	-3.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.73%	2.11%	+0.62%

Volatility

OEGAX vs. ACSTX - Volatility Comparison

Invesco Discovery Mid Cap Growth Fund Class A (OEGAX) has a higher volatility of 7.72% compared to Invesco Comstock Fund (ACSTX) at 3.36%. This indicates that OEGAX's price experiences larger fluctuations and is considered to be riskier than ACSTX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OEGAX	ACSTX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.72%	3.36%	+4.36%
Volatility (6M) Calculated over the trailing 6-month period	17.80%	8.28%	+9.52%
Volatility (1Y) Calculated over the trailing 1-year period	21.92%	11.05%	+10.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.37%	15.39%	+6.98%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.19%	19.46%	+2.73%

OEGAX vs. ACSTX - Expense Ratio Comparison

OEGAX has a 1.05% expense ratio, which is higher than ACSTX's 0.80% expense ratio.

Dividends

OEGAX vs. ACSTX - Dividend Comparison

OEGAX's dividend yield for the trailing twelve months is around 7.20%, less than ACSTX's 8.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACSTX Invesco Comstock Fund	8.04%	8.79%	10.17%	8.44%	13.00%	8.66%	2.05%	6.66%	10.03%	3.60%	6.98%	1.10%
OEGAX Invesco Discovery Mid Cap Growth Fund Class A	7.20%	9.10%	4.95%	0.00%	0.00%	18.94%	3.55%	4.40%	10.54%	9.32%	0.89%	4.27%

Frequently Asked Questions

Can I hold both OEGAX and ACSTX in my portfolio?

OEGAX and ACSTX 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, OEGAX or ACSTX?

OEGAX has higher volatility (7.72%) compared to ACSTX (3.36%). In terms of maximum drawdown, OEGAX dropped -53.73% vs ACSTX's -58.61%.

Which has better risk-adjusted returns?

ACSTX currently has the higher Sharpe Ratio (2.10 vs 1.65), 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.