IIRMX vs. ATGAX

Last updated Jun 3, 2026

IIRMX (Voya Russell Mid Cap Index Portfolio) and ATGAX (Aquila Opportunity Growth Fund) are both Mid Cap Blend Equities funds. At a correlation of -0.50, they often move in opposite directions. IIRMX charges 0.40%/yr vs 1.50%/yr for ATGAX.

Performance

IIRMX vs. ATGAX - Performance Comparison

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

Returns By Period

IIRMX

• 1D: 0.23%
• 1M: 7.16%
• YTD: 16.20%
• 6M: 16.84%
• 1Y: 26.79%
• 3Y*: 18.37%
• 5Y*: 8.57%
• 10Y*: 11.55%

ATGAX

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

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

IIRMX vs. ATGAX - Yearly Performance Comparison

	2026 (YTD)
IIRMX Voya Russell Mid Cap Index Portfolio	0.34%
ATGAX Aquila Opportunity Growth Fund	2.03%

Correlation

The correlation between IIRMX and ATGAX is -0.50, 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 (All Time) Calculated using the full available price history since May 29, 2026	-0.50

Return for Risk

IIRMX vs. ATGAX — Risk / Return Rank

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

IIRMX

IIRMX Risk / Return Rank: 55
IIRMX Sharpe Ratio Rank: 23
IIRMX Sortino Ratio Rank: 28
IIRMX Omega Ratio Rank: 43
IIRMX Calmar Ratio Rank: 90
IIRMX Martin Ratio Rank: 93

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.

IIRMX vs. ATGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Voya Russell Mid Cap Index Portfolio (IIRMX) 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.

	IIRMX	ATGAX	Difference
Sharpe ratio Return per unit of total volatility	1.37	—	—
Sortino ratio Return per unit of downside risk	2.20	—	—
Omega ratio Gain probability vs. loss probability	1.35	—	—
Calmar ratio Return relative to maximum drawdown	4.57	—	—
Martin ratio Return relative to average drawdown	20.30	—	—
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

	IIRMX	ATGAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.37	—	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.43	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.58	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.47	58.33	-57.86

Drawdowns

IIRMX vs. ATGAX - Drawdown Comparison

The maximum IIRMX drawdown since its inception was -56.44%, which is greater than ATGAX's maximum drawdown of 0.00%. Use the drawdown chart below to compare losses from any high point for IIRMX and ATGAX.

Drawdown Indicators

	IIRMX	ATGAX	Difference
Max Drawdown Largest peak-to-trough decline	-56.44%	0.00%	-56.44%
Max Drawdown (1Y) Largest decline over 1 year	-9.61%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-21.18%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-26.26%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-40.41%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-7.88%	0.00%	-7.88%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.17%	—	—

Volatility

Volatility by Period

	IIRMX	ATGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	17.09%	—	—
Volatility (6M) Calculated over the trailing 6-month period	19.25%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	22.37%	9.26%	+13.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.33%	9.26%	+11.07%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.38%	9.26%	+11.12%

IIRMX vs. ATGAX - Expense Ratio Comparison

IIRMX has a 0.40% expense ratio, which is lower than ATGAX's 1.50% expense ratio.

Dividends

IIRMX vs. ATGAX - Dividend Comparison

IIRMX's dividend yield for the trailing twelve months is around 37.97%, while ATGAX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%	0.00%	0.00%
IIRMX Voya Russell Mid Cap Index Portfolio	37.97%	13.19%	10.43%	11.78%	10.34%	10.34%	14.22%	20.78%	15.64%	8.09%	14.11%	10.13%

Frequently Asked Questions

Can I hold both IIRMX and ATGAX in my portfolio?

IIRMX 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.