FLAPX vs. ATGAX

Last updated Jun 4, 2026

FLAPX (Fidelity Flex Mid Cap Index Fund) and ATGAX (Aquila Opportunity Growth Fund) are both Mid Cap Blend Equities funds. A 0.50 correlation means they provide meaningful diversification when combined. FLAPX charges 0.00%/yr vs 1.50%/yr for ATGAX.

Performance

FLAPX vs. ATGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Flex Mid Cap Index Fund (FLAPX) and Aquila Opportunity Growth Fund (ATGAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

FLAPX

• 1D: 0.37%
• 1M: 3.60%
• YTD: 15.19%
• 6M: 15.35%
• 1Y: 28.95%
• 3Y*: 19.67%
• 5Y*: 9.56%
• 10Y*: —

ATGAX

• 1D: 1.15%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

FLAPX vs. ATGAX - Yearly Performance Comparison

	2026 (YTD)
FLAPX Fidelity Flex Mid Cap Index Fund	0.28%
ATGAX Aquila Opportunity Growth Fund	2.03%

Correlation

The correlation between FLAPX and ATGAX is 0.50, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 29, 2026	0.50

Return for Risk

FLAPX vs. ATGAX — Risk / Return Rank

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

FLAPX

FLAPX Risk / Return Rank: 54
FLAPX Sharpe Ratio Rank: 45
FLAPX Sortino Ratio Rank: 45
FLAPX Omega Ratio Rank: 42
FLAPX Calmar Ratio Rank: 72
FLAPX Martin Ratio Rank: 67

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.

FLAPX vs. ATGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Flex Mid Cap Index Fund (FLAPX) and Aquila Opportunity Growth Fund (ATGAX). 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.

	FLAPX	ATGAX	Difference
Sharpe ratio: Return per unit of total volatility	1.96	—	—
Sortino ratio: Return per unit of downside risk	2.81	—	—
Omega ratio: Gain probability vs. loss probability	1.34	—	—
Calmar ratio: Return relative to maximum drawdown	3.31	—	—
Martin ratio: Return relative to average drawdown	13.10	—	—
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

Sharpe Ratios by Period

	FLAPX	ATGAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.96	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.52	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.61	58.33	-57.72

Drawdowns

FLAPX vs. ATGAX - Drawdown Comparison

The maximum FLAPX drawdown since its inception was -40.31%, which is greater than ATGAX's maximum drawdown of 0.00%. Use the drawdown chart below to compare losses from any high point for FLAPX and ATGAX.

Drawdown Indicators

	FLAPX	ATGAX	Difference
Max Drawdown Largest peak-to-trough decline	-40.31%	0.00%	-40.31%
Max Drawdown (1Y) Largest decline over 1 year	-9.21%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-21.02%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-26.09%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-6.12%	0.00%	-6.12%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.32%	—	—

Volatility

Volatility by Period

	FLAPX	ATGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.80%	—	—
Volatility (6M) Calculated over the trailing 6-month period	11.55%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	15.51%	9.26%	+6.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.58%	9.26%	+9.32%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.95%	9.26%	+10.69%

FLAPX vs. ATGAX - Expense Ratio Comparison

FLAPX has a 0.00% expense ratio, which is lower than ATGAX's 1.50% expense ratio.

Dividends

FLAPX vs. ATGAX - Dividend Comparison

Neither FLAPX nor ATGAX has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
ATGAX Aquila Opportunity Growth Fund	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
FLAPX Fidelity Flex Mid Cap Index Fund	0.00%	0.00%	1.08%	1.99%	1.82%	2.83%	2.16%	2.18%	2.24%	0.44%

Frequently Asked Questions

Can I hold both FLAPX and ATGAX in my portfolio?

FLAPX and ATGAX 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.