OPPAX vs. FSTEX

Last updated Jun 5, 2026

OPPAX (Invesco Global Fund) and FSTEX (Invesco Energy Fund) are both mutual funds - OPPAX is a Global Equities fund managed by Invesco, while FSTEX is a Energy Equities fund managed by Invesco. Over the past 10 years, OPPAX returned 12.30%/yr vs 7.08%/yr for FSTEX. At a 0.43 correlation, their price movements are largely independent. OPPAX charges 1.04%/yr vs 1.36%/yr for FSTEX.

Performance

OPPAX vs. FSTEX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Global Fund (OPPAX) and Invesco Energy Fund (FSTEX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, OPPAX achieves a 9.49% return, which is significantly lower than FSTEX's 33.02% return. Over the past 10 years, OPPAX has outperformed FSTEX with an annualized return of 12.30%, while FSTEX has yielded a comparatively lower 7.08% annualized return.

OPPAX

• 1D: -0.29%
• 1M: 6.31%
• YTD: 9.49%
• 6M: 9.55%
• 1Y: 21.39%
• 3Y*: 17.83%
• 5Y*: 7.12%
• 10Y*: 12.30%

FSTEX

• 1D: 0.83%
• 1M: -2.51%
• YTD: 33.02%
• 6M: 30.09%
• 1Y: 48.72%
• 3Y*: 19.91%
• 5Y*: 21.28%
• 10Y*: 7.08%

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

OPPAX vs. FSTEX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
OPPAX Invesco Global Fund	9.49%	15.20%	16.16%	34.18%	-32.18%	15.23%	27.64%	31.58%	-13.65%	36.25%
FSTEX Invesco Energy Fund	33.02%	12.31%	6.00%	0.28%	52.85%	55.99%	-32.13%	4.78%	-26.82%	-8.26%

Correlation

The correlation between OPPAX and FSTEX is -0.14, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.14
Correlation (3Y) Calculated over the trailing 3-year period	0.08
Correlation (5Y) Calculated over the trailing 5-year period	0.22
Correlation (10Y) Calculated over the trailing 10-year period	0.35
Correlation (All Time) Calculated using the full available price history since Jan 20, 1984	0.43

The correlation between OPPAX and FSTEX shifts across timeframes, from -0.14 (1 year) to 0.43 (all time), reflecting how their relationship changes across market environments.

Return for Risk

OPPAX vs. FSTEX — Risk / Return Rank

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

OPPAX

OPPAX Risk / Return Rank: 25
OPPAX Sharpe Ratio Rank: 28
OPPAX Sortino Ratio Rank: 28
OPPAX Omega Ratio Rank: 25
OPPAX Calmar Ratio Rank: 19
OPPAX Martin Ratio Rank: 23

FSTEX

FSTEX Risk / Return Rank: 71
FSTEX Sharpe Ratio Rank: 74
FSTEX Sortino Ratio Rank: 56
FSTEX Omega Ratio Rank: 55
FSTEX Calmar Ratio Rank: 90
FSTEX Martin Ratio Rank: 79

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.

OPPAX vs. FSTEX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Global Fund (OPPAX) and Invesco Energy Fund (FSTEX). 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.

	OPPAX	FSTEX	Difference
Sharpe ratio: Return per unit of total volatility	1.51	2.49	-0.97
Sortino ratio: Return per unit of downside risk	2.22	3.12	-0.90
Omega ratio: Gain probability vs. loss probability	1.27	1.40	-0.14
Calmar ratio: Return relative to maximum drawdown	1.57	4.57	-3.01
Martin ratio: Return relative to average drawdown	5.80	14.52	-8.72
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

OPPAX vs. FSTEX - Sharpe Ratio Comparison

The current OPPAX Sharpe Ratio is 1.51, which is lower than the FSTEX Sharpe Ratio of 2.49. The chart below compares the historical Sharpe Ratios of OPPAX and FSTEX, 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

	OPPAX	FSTEX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.51	2.49	-0.97
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.34	0.85	-0.51
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.60	0.24	+0.36
Sharpe Ratio (All Time) Calculated using the full available price history	0.50	0.26	+0.23

Drawdowns

OPPAX vs. FSTEX - Drawdown Comparison

The maximum OPPAX drawdown since its inception was -60.39%, smaller than the maximum FSTEX drawdown of -83.31%. Use the drawdown chart below to compare losses from any high point for OPPAX and FSTEX.

Drawdown Indicators

	OPPAX	FSTEX	Difference
Max Drawdown Largest peak-to-trough decline	-60.39%	-83.31%	+22.92%
Max Drawdown (1Y) Largest decline over 1 year	-16.26%	-10.30%	-5.96%
Max Drawdown (3Y) Largest decline over 3 years	-21.69%	-18.58%	-3.11%
Max Drawdown (5Y) Largest decline over 5 years	-41.90%	-26.88%	-15.02%
Max Drawdown (10Y) Largest decline over 10 years	-41.90%	-73.41%	+31.51%
Current Drawdown Current decline from peak	-0.29%	-4.73%	+4.44%
Average Drawdown Average peak-to-trough decline	-15.45%	-25.20%	+9.75%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.19%	3.23%	+0.96%

Volatility

OPPAX vs. FSTEX - Volatility Comparison

The current volatility for Invesco Global Fund (OPPAX) is 4.57%, while Invesco Energy Fund (FSTEX) has a volatility of 7.69%. This indicates that OPPAX experiences smaller price fluctuations and is considered to be less risky than FSTEX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	OPPAX	FSTEX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.57%	7.69%	-3.12%
Volatility (6M) Calculated over the trailing 6-month period	13.95%	15.32%	-1.37%
Volatility (1Y) Calculated over the trailing 1-year period	16.85%	18.96%	-2.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.27%	25.16%	-3.89%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.68%	29.72%	-9.04%

OPPAX vs. FSTEX - Expense Ratio Comparison

OPPAX has a 1.04% expense ratio, which is lower than FSTEX's 1.36% expense ratio.

Dividends

OPPAX vs. FSTEX - Dividend Comparison

OPPAX's dividend yield for the trailing twelve months is around 22.65%, more than FSTEX's 1.67% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSTEX Invesco Energy Fund	1.67%	2.22%	4.03%	2.11%	0.89%	1.80%	2.21%	1.53%	3.05%	2.22%	1.10%	1.58%
OPPAX Invesco Global Fund	22.65%	24.79%	11.93%	10.72%	14.18%	7.18%	5.72%	1.35%	12.92%	5.92%	0.69%	5.17%

Frequently Asked Questions

Can I hold both OPPAX and FSTEX in my portfolio?

OPPAX and FSTEX have a correlation of -0.14, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, OPPAX or FSTEX?

FSTEX has higher volatility (7.69%) compared to OPPAX (4.57%). In terms of maximum drawdown, OPPAX dropped -60.39% vs FSTEX's -83.31%.

Which has better risk-adjusted returns?

FSTEX currently has the higher Sharpe Ratio (2.49 vs 1.51), 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.