IRGJX vs. PGOFX

Last updated Jun 24, 2026

IRGJX (Voya Russell Mid Cap Growth Index Portfolio) and PGOFX (Pioneer Select Mid Cap Growth Fund) are both Mid Cap Growth Equities funds. Over the past 10 years, IRGJX returned 12.50%/yr vs 14.76%/yr for PGOFX. With a 0.95 correlation, they move nearly in lockstep. IRGJX charges 0.40%/yr vs 0.99%/yr for PGOFX.

Performance

IRGJX vs. PGOFX - Performance Comparison

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

Returns By Period

In the year-to-date period, IRGJX achieves a 3.68% return, which is significantly lower than PGOFX's 25.51% return. Over the past 10 years, IRGJX has underperformed PGOFX with an annualized return of 12.50%, while PGOFX has yielded a comparatively higher 14.76% annualized return.

IRGJX

• 1D: -0.11%
• 1M: 1.80%
• YTD: 3.68%
• 6M: 1.69%
• 1Y: 5.20%
• 3Y*: 15.39%
• 5Y*: 5.36%
• 10Y*: 12.50%

PGOFX

• 1D: 1.11%
• 1M: 7.50%
• YTD: 25.51%
• 6M: 23.17%
• 1Y: 39.00%
• 3Y*: 26.53%
• 5Y*: 8.81%
• 10Y*: 14.76%

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

IRGJX vs. PGOFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IRGJX Voya Russell Mid Cap Growth Index Portfolio	3.68%	8.53%	21.54%	25.34%	-26.82%	12.16%	34.60%	34.39%	-5.13%	24.67%
PGOFX Pioneer Select Mid Cap Growth Fund	25.51%	20.66%	23.84%	18.66%	-31.26%	8.06%	38.86%	32.73%	-5.77%	29.88%

Correlation

The correlation between IRGJX and PGOFX is 0.82, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.84
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since May 4, 2009	0.95

The correlation between IRGJX and PGOFX shifts across timeframes, from 0.82 (1 year) to 0.95 (all time), reflecting how their relationship changes across market environments.

Return for Risk

IRGJX vs. PGOFX — Risk / Return Rank

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

IRGJX

IRGJX Risk / Return Rank: 6
IRGJX Sharpe Ratio Rank: 6
IRGJX Sortino Ratio Rank: 6
IRGJX Omega Ratio Rank: 5
IRGJX Calmar Ratio Rank: 6
IRGJX Martin Ratio Rank: 6

PGOFX

PGOFX Risk / Return Rank: 62
PGOFX Sharpe Ratio Rank: 51
PGOFX Sortino Ratio Rank: 45
PGOFX Omega Ratio Rank: 42
PGOFX Calmar Ratio Rank: 86
PGOFX Martin Ratio Rank: 86

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.

IRGJX vs. PGOFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Voya Russell Mid Cap Growth Index Portfolio (IRGJX) and Pioneer Select Mid Cap Growth Fund (PGOFX). 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.

	IRGJX	PGOFX	Difference
Sharpe ratio: Return per unit of total volatility	0.37	1.96	-1.59
Sortino ratio: Return per unit of downside risk	0.63	2.60	-1.97
Omega ratio: Gain probability vs. loss probability	1.07	1.32	-0.25
Calmar ratio: Return relative to maximum drawdown	0.43	3.85	-3.43
Martin ratio: Return relative to average drawdown	1.19	14.90	-13.71

IRGJX vs. PGOFX - Sharpe Ratio Comparison

The current IRGJX Sharpe Ratio is 0.37, which is lower than the PGOFX Sharpe Ratio of 1.96. The chart below compares the historical Sharpe Ratios of IRGJX and PGOFX, 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

IRGJX vs. PGOFX - Drawdown Comparison

The maximum IRGJX drawdown since its inception was -38.65%, smaller than the maximum PGOFX drawdown of -62.17%. Use the drawdown chart below to compare losses from any high point for IRGJX and PGOFX.

Drawdown Indicators

	IRGJX	PGOFX	Difference
Max Drawdown Largest peak-to-trough decline	-38.65%	-62.17%	+23.52%
Max Drawdown (1Y) Largest decline over 1 year	-14.85%	-10.45%	-4.40%
Max Drawdown (3Y) Largest decline over 3 years	-25.37%	-28.15%	+2.78%
Max Drawdown (5Y) Largest decline over 5 years	-38.65%	-39.78%	+1.13%
Max Drawdown (10Y) Largest decline over 10 years	-38.65%	-39.78%	+1.13%
Current Drawdown Current decline from peak	-2.27%	0.00%	-2.27%
Average Drawdown Average peak-to-trough decline	-6.82%	-11.69%	+4.87%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.10%	2.70%	+2.40%

Volatility

IRGJX vs. PGOFX - Volatility Comparison

The current volatility for Voya Russell Mid Cap Growth Index Portfolio (IRGJX) is 5.70%, while Pioneer Select Mid Cap Growth Fund (PGOFX) has a volatility of 7.92%. This indicates that IRGJX experiences smaller price fluctuations and is considered to be less risky than PGOFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IRGJX	PGOFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.70%	7.92%	-2.22%
Volatility (6M) Calculated over the trailing 6-month period	13.43%	16.09%	-2.66%
Volatility (1Y) Calculated over the trailing 1-year period	17.35%	20.61%	-3.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.19%	23.74%	-0.55%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.14%	23.16%	-1.02%

IRGJX vs. PGOFX - Expense Ratio Comparison

IRGJX has a 0.40% expense ratio, which is lower than PGOFX's 0.99% expense ratio.

Dividends

IRGJX vs. PGOFX - Dividend Comparison

IRGJX's dividend yield for the trailing twelve months is around 13.51%, more than PGOFX's 13.23% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IRGJX Voya Russell Mid Cap Growth Index Portfolio	13.51%	14.29%	0.35%	0.42%	12.03%	3.55%	5.50%	10.03%	13.76%	0.83%	0.96%	0.91%
PGOFX Pioneer Select Mid Cap Growth Fund	13.23%	16.61%	12.14%	0.00%	1.84%	11.47%	13.77%	1.37%	16.05%	8.32%	1.69%	8.90%

Frequently Asked Questions

Can I hold both IRGJX and PGOFX in my portfolio?

IRGJX and PGOFX have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IRGJX or PGOFX?

PGOFX has higher volatility (7.92%) compared to IRGJX (5.70%). In terms of maximum drawdown, IRGJX dropped -38.65% vs PGOFX's -62.17%.

Which has better risk-adjusted returns?

PGOFX currently has the higher Sharpe Ratio (1.96 vs 0.37), 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.