IIRLX vs. VSTSX

Last updated Jun 4, 2026

IIRLX (Voya Russell Large Cap Index Portfolio) and VSTSX (Vanguard Total Stock Market Index Fund Institutional Select Shares) are both Large Cap Blend Equities funds. Over the past 5 years, IIRLX returned 14.81%/yr vs 13.07%/yr for VSTSX. Their correlation of 0.95 suggests significant overlap in exposure. IIRLX charges 0.36%/yr vs 0.01%/yr for VSTSX.

Performance

IIRLX vs. VSTSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Voya Russell Large Cap Index Portfolio (IIRLX) and Vanguard Total Stock Market Index Fund Institutional Select Shares (VSTSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IIRLX achieves a 11.09% return, which is significantly lower than VSTSX's 11.99% return.

IIRLX

• 1D: 0.06%
• 1M: 6.31%
• YTD: 11.09%
• 6M: 11.05%
• 1Y: 29.54%
• 3Y*: 23.56%
• 5Y*: 14.81%
• 10Y*: 16.22%

VSTSX

• 1D: 0.24%
• 1M: 5.76%
• YTD: 11.99%
• 6M: 11.89%
• 1Y: 29.14%
• 3Y*: 22.38%
• 5Y*: 13.07%
• 10Y*: —

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

IIRLX vs. VSTSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IIRLX Voya Russell Large Cap Index Portfolio	11.09%	18.77%	26.95%	29.41%	-20.07%	27.26%	21.71%	31.18%	-3.45%	21.53%
VSTSX Vanguard Total Stock Market Index Fund Institutional Select Shares	11.99%	17.16%	23.27%	26.54%	-19.49%	25.75%	21.02%	30.81%	-5.15%	20.21%

Correlation

The correlation between IIRLX and VSTSX is 0.85, 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	0.85
Correlation (3Y) Calculated over the trailing 3-year period	0.87
Correlation (5Y) Calculated over the trailing 5-year period	0.92
Correlation (All Time) Calculated using the full available price history since Jan 4, 2017	0.95

The correlation between IIRLX and VSTSX has been stable across timeframes, ranging from 0.85 to 0.95 - a consistent structural relationship.

Return for Risk

IIRLX vs. VSTSX — Risk / Return Rank

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

IIRLX

IIRLX Risk / Return Rank: 75
IIRLX Sharpe Ratio Rank: 76
IIRLX Sortino Ratio Rank: 72
IIRLX Omega Ratio Rank: 71
IIRLX Calmar Ratio Rank: 77
IIRLX Martin Ratio Rank: 79

VSTSX

VSTSX Risk / Return Rank: 72
VSTSX Sharpe Ratio Rank: 72
VSTSX Sortino Ratio Rank: 65
VSTSX Omega Ratio Rank: 63
VSTSX Calmar Ratio Rank: 75
VSTSX Martin Ratio Rank: 83

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.

IIRLX vs. VSTSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Voya Russell Large Cap Index Portfolio (IIRLX) and Vanguard Total Stock Market Index Fund Institutional Select Shares (VSTSX). 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.

	IIRLX	VSTSX	Difference
Sharpe ratio: Return per unit of total volatility	2.53	2.47	+0.05
Sortino ratio: Return per unit of downside risk	3.54	3.37	+0.17
Omega ratio: Gain probability vs. loss probability	1.47	1.44	+0.03
Calmar ratio: Return relative to maximum drawdown	3.48	3.38	+0.10
Martin ratio: Return relative to average drawdown	14.91	15.60	-0.69
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IIRLX vs. VSTSX - Sharpe Ratio Comparison

The current IIRLX Sharpe Ratio is 2.53, which is comparable to the VSTSX Sharpe Ratio of 2.47. The chart below compares the historical Sharpe Ratios of IIRLX and VSTSX, 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

	IIRLX	VSTSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.53	2.47	+0.05
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.86	0.76	+0.10
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.89	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.62	0.80	-0.19

Drawdowns

IIRLX vs. VSTSX - Drawdown Comparison

The maximum IIRLX drawdown since its inception was -50.33%, which is greater than VSTSX's maximum drawdown of -34.97%. Use the drawdown chart below to compare losses from any high point for IIRLX and VSTSX.

Drawdown Indicators

	IIRLX	VSTSX	Difference
Max Drawdown Largest peak-to-trough decline	-50.33%	-34.97%	-15.36%
Max Drawdown (1Y) Largest decline over 1 year	-9.83%	-8.92%	-0.91%
Max Drawdown (3Y) Largest decline over 3 years	-19.58%	-19.36%	-0.22%
Max Drawdown (5Y) Largest decline over 5 years	-25.83%	-25.35%	-0.48%
Max Drawdown (10Y) Largest decline over 10 years	-32.60%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-6.78%	-4.89%	-1.89%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.18%	1.93%	+0.25%

Volatility

IIRLX vs. VSTSX - Volatility Comparison

Voya Russell Large Cap Index Portfolio (IIRLX) has a higher volatility of 6.14% compared to Vanguard Total Stock Market Index Fund Institutional Select Shares (VSTSX) at 2.95%. This indicates that IIRLX's price experiences larger fluctuations and is considered to be riskier than VSTSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IIRLX	VSTSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.14%	2.95%	+3.19%
Volatility (6M) Calculated over the trailing 6-month period	10.65%	9.19%	+1.46%
Volatility (1Y) Calculated over the trailing 1-year period	13.55%	12.19%	+1.36%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.77%	17.36%	+0.41%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.52%	18.76%	-0.24%

IIRLX vs. VSTSX - Expense Ratio Comparison

IIRLX has a 0.36% expense ratio, which is higher than VSTSX's 0.01% expense ratio.

Dividends

IIRLX vs. VSTSX - Dividend Comparison

IIRLX's dividend yield for the trailing twelve months is around 4.76%, more than VSTSX's 1.02% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IIRLX Voya Russell Large Cap Index Portfolio	4.76%	3.76%	0.96%	1.14%	5.04%	4.77%	4.71%	4.35%	1.73%	1.47%	1.77%	1.66%
VSTSX Vanguard Total Stock Market Index Fund Institutional Select Shares	1.02%	1.13%	1.27%	1.43%	1.67%	1.23%	1.44%	1.79%	2.07%	1.74%	0.00%	0.00%

Frequently Asked Questions

Can I hold both IIRLX and VSTSX in my portfolio?

IIRLX and VSTSX have a correlation of 0.85, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IIRLX or VSTSX?

IIRLX has higher volatility (6.14%) compared to VSTSX (2.95%). In terms of maximum drawdown, IIRLX dropped -50.33% vs VSTSX's -34.97%.

Which has better risk-adjusted returns?

IIRLX currently has the higher Sharpe Ratio (2.53 vs 2.47), 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.