ISOLX vs. IRSNX

Last updated Jun 4, 2026

ISOLX (Voya Target In-Retirement Fund) and IRSNX (Voya Target Retirement 2035 Fund) are both Target Retirement Date funds from Voya. Over the past 10 years, ISOLX returned 5.66%/yr vs 10.18%/yr for IRSNX. Their correlation of 0.90 suggests significant overlap in exposure. Both charge a 0.20% expense ratio.

Performance

ISOLX vs. IRSNX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Voya Target In-Retirement Fund (ISOLX) and Voya Target Retirement 2035 Fund (IRSNX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ISOLX achieves a 5.29% return, which is significantly lower than IRSNX's 9.98% return. Over the past 10 years, ISOLX has underperformed IRSNX with an annualized return of 5.66%, while IRSNX has yielded a comparatively higher 10.18% annualized return.

ISOLX

• 1D: 0.17%
• 1M: 2.40%
• YTD: 5.29%
• 6M: 5.62%
• 1Y: 13.99%
• 3Y*: 10.19%
• 5Y*: 4.32%
• 10Y*: 5.66%

IRSNX

• 1D: 0.31%
• 1M: 4.44%
• YTD: 9.98%
• 6M: 10.61%
• 1Y: 23.39%
• 3Y*: 16.41%
• 5Y*: 8.21%
• 10Y*: 10.18%

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

ISOLX vs. IRSNX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ISOLX Voya Target In-Retirement Fund	5.29%	11.96%	7.03%	11.13%	-14.97%	6.53%	10.46%	14.40%	-2.96%	9.49%
IRSNX Voya Target Retirement 2035 Fund	9.98%	17.23%	12.30%	17.56%	-17.97%	15.51%	15.76%	22.33%	-7.50%	19.14%

Correlation

The correlation between ISOLX and IRSNX is 0.95, 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	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (10Y) Calculated over the trailing 10-year period	0.90
Correlation (All Time) Calculated using the full available price history since Dec 26, 2012	0.90

The correlation between ISOLX and IRSNX has been stable across timeframes, ranging from 0.90 to 0.95 - a consistent structural relationship.

Return for Risk

ISOLX vs. IRSNX — Risk / Return Rank

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

ISOLX

ISOLX Risk / Return Rank: 82
ISOLX Sharpe Ratio Rank: 84
ISOLX Sortino Ratio Rank: 87
ISOLX Omega Ratio Rank: 81
ISOLX Calmar Ratio Rank: 75
ISOLX Martin Ratio Rank: 83

IRSNX

IRSNX Risk / Return Rank: 82
IRSNX Sharpe Ratio Rank: 84
IRSNX Sortino Ratio Rank: 84
IRSNX Omega Ratio Rank: 78
IRSNX Calmar Ratio Rank: 77
IRSNX Martin Ratio Rank: 87

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.

ISOLX vs. IRSNX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Voya Target In-Retirement Fund (ISOLX) and Voya Target Retirement 2035 Fund (IRSNX). 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.

	ISOLX	IRSNX	Difference
Sharpe ratio Return per unit of total volatility	2.76	2.72	+0.03
Sortino ratio Return per unit of downside risk	4.25	4.01	+0.25
Omega ratio Gain probability vs. loss probability	1.55	1.51	+0.04
Calmar ratio Return relative to maximum drawdown	3.39	3.48	-0.09
Martin ratio Return relative to average drawdown	15.49	16.69	-1.20
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ISOLX vs. IRSNX - Sharpe Ratio Comparison

The current ISOLX Sharpe Ratio is 2.76, which is comparable to the IRSNX Sharpe Ratio of 2.72. The chart below compares the historical Sharpe Ratios of ISOLX and IRSNX, 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

	ISOLX	IRSNX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.76	2.72	+0.03
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.63	0.68	-0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.87	0.77	+0.10
Sharpe Ratio (All Time) Calculated using the full available price history	0.90	0.75	+0.15

Drawdowns

ISOLX vs. IRSNX - Drawdown Comparison

The maximum ISOLX drawdown since its inception was -19.02%, smaller than the maximum IRSNX drawdown of -29.52%. Use the drawdown chart below to compare losses from any high point for ISOLX and IRSNX.

Drawdown Indicators

	ISOLX	IRSNX	Difference
Max Drawdown Largest peak-to-trough decline	-19.02%	-29.52%	+10.50%
Max Drawdown (1Y) Largest decline over 1 year	-4.54%	-7.45%	+2.91%
Max Drawdown (3Y) Largest decline over 3 years	-6.37%	-12.03%	+5.66%
Max Drawdown (5Y) Largest decline over 5 years	-19.02%	-24.44%	+5.42%
Max Drawdown (10Y) Largest decline over 10 years	-19.02%	-29.52%	+10.50%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-2.82%	-4.11%	+1.29%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.96%	1.50%	-0.54%

Volatility

ISOLX vs. IRSNX - Volatility Comparison

The current volatility for Voya Target In-Retirement Fund (ISOLX) is 2.04%, while Voya Target Retirement 2035 Fund (IRSNX) has a volatility of 3.03%. This indicates that ISOLX experiences smaller price fluctuations and is considered to be less risky than IRSNX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ISOLX	IRSNX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.04%	3.03%	-0.99%
Volatility (6M) Calculated over the trailing 6-month period	4.51%	7.81%	-3.30%
Volatility (1Y) Calculated over the trailing 1-year period	5.59%	9.53%	-3.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.02%	12.40%	-5.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.58%	13.45%	-6.87%

ISOLX vs. IRSNX - Expense Ratio Comparison

Both ISOLX and IRSNX have an expense ratio of 0.20%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

ISOLX vs. IRSNX - Dividend Comparison

ISOLX's dividend yield for the trailing twelve months is around 3.69%, less than IRSNX's 8.75% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IRSNX Voya Target Retirement 2035 Fund	8.75%	9.62%	2.15%	2.25%	6.05%	17.46%	4.26%	4.23%	6.04%	6.30%	1.73%	0.37%
ISOLX Voya Target In-Retirement Fund	3.69%	3.89%	2.37%	3.10%	3.50%	10.09%	3.54%	6.63%	3.53%	4.60%	2.06%	0.30%

Frequently Asked Questions

Can I hold both ISOLX and IRSNX in my portfolio?

With a correlation of 0.95, ISOLX and IRSNX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, ISOLX or IRSNX?

IRSNX has higher volatility (3.03%) compared to ISOLX (2.04%). In terms of maximum drawdown, ISOLX dropped -19.02% vs IRSNX's -29.52%.

Which has better risk-adjusted returns?

ISOLX currently has the higher Sharpe Ratio (2.76 vs 2.72), 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.