IPHYX vs. VYMSX

Last updated Jun 3, 2026

IPHYX (Voya High Yield Portfolio) and VYMSX (Voya Mid Cap Research Enhanced Index Fund) are both mutual funds - IPHYX is a High Yield Bonds fund managed by Voya, while VYMSX is a Mid Cap Blend Equities fund managed by Voya. Over the past 10 years, IPHYX returned 4.53%/yr vs 10.27%/yr for VYMSX. At a 0.35 correlation, their price movements are largely independent. IPHYX charges 0.73%/yr vs 0.82%/yr for VYMSX.

Performance

IPHYX vs. VYMSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Voya High Yield Portfolio (IPHYX) and Voya Mid Cap Research Enhanced Index Fund (VYMSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IPHYX achieves a 1.29% return, which is significantly lower than VYMSX's 13.78% return. Over the past 10 years, IPHYX has underperformed VYMSX with an annualized return of 4.53%, while VYMSX has yielded a comparatively higher 10.27% annualized return.

IPHYX

• 1D: -0.11%
• 1M: 0.47%
• YTD: 1.29%
• 6M: 1.99%
• 1Y: 5.48%
• 3Y*: 7.21%
• 5Y*: 2.69%
• 10Y*: 4.53%

VYMSX

• 1D: -0.27%
• 1M: 3.63%
• YTD: 13.78%
• 6M: 13.58%
• 1Y: 24.79%
• 3Y*: 16.42%
• 5Y*: 8.08%
• 10Y*: 10.27%

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

IPHYX vs. VYMSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IPHYX Voya High Yield Portfolio	1.29%	6.80%	6.74%	11.47%	-13.75%	4.15%	5.66%	15.24%	-3.18%	6.24%
VYMSX Voya Mid Cap Research Enhanced Index Fund	13.78%	6.79%	14.92%	17.35%	-14.63%	27.47%	8.26%	28.18%	-14.55%	13.43%

Correlation

The correlation between IPHYX and VYMSX is 0.49, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.49
Correlation (3Y) Calculated over the trailing 3-year period	0.50
Correlation (5Y) Calculated over the trailing 5-year period	0.49
Correlation (10Y) Calculated over the trailing 10-year period	0.47
Correlation (All Time) Calculated using the full available price history since May 5, 2004	0.35

The correlation between IPHYX and VYMSX shifts across timeframes, from 0.35 (all time) to 0.50 (3 years), reflecting how their relationship changes across market environments.

Return for Risk

IPHYX vs. VYMSX — Risk / Return Rank

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

IPHYX

IPHYX Risk / Return Rank: 58
IPHYX Sharpe Ratio Rank: 36
IPHYX Sortino Ratio Rank: 51
IPHYX Omega Ratio Rank: 48
IPHYX Calmar Ratio Rank: 72
IPHYX Martin Ratio Rank: 85

VYMSX

VYMSX Risk / Return Rank: 49
VYMSX Sharpe Ratio Rank: 30
VYMSX Sortino Ratio Rank: 31
VYMSX Omega Ratio Rank: 26
VYMSX Calmar Ratio Rank: 80
VYMSX Martin Ratio Rank: 78

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.

IPHYX vs. VYMSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Voya High Yield Portfolio (IPHYX) and Voya Mid Cap Research Enhanced Index Fund (VYMSX). 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.

	IPHYX	VYMSX	Difference
Sharpe ratio Return per unit of total volatility	1.76	1.60	+0.16
Sortino ratio Return per unit of downside risk	2.99	2.32	+0.68
Omega ratio Gain probability vs. loss probability	1.38	1.27	+0.11
Calmar ratio Return relative to maximum drawdown	3.30	3.65	-0.35
Martin ratio Return relative to average drawdown	16.37	14.66	+1.71
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IPHYX vs. VYMSX - Sharpe Ratio Comparison

The current IPHYX Sharpe Ratio is 1.76, which is comparable to the VYMSX Sharpe Ratio of 1.60. The chart below compares the historical Sharpe Ratios of IPHYX and VYMSX, 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

	IPHYX	VYMSX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.76	1.60	+0.16
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.53	0.36	+0.17
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.83	0.46	+0.38
Sharpe Ratio (All Time) Calculated using the full available price history	1.03	0.40	+0.63

Drawdowns

IPHYX vs. VYMSX - Drawdown Comparison

The maximum IPHYX drawdown since its inception was -32.43%, smaller than the maximum VYMSX drawdown of -57.85%. Use the drawdown chart below to compare losses from any high point for IPHYX and VYMSX.

Drawdown Indicators

	IPHYX	VYMSX	Difference
Max Drawdown Largest peak-to-trough decline	-32.43%	-57.85%	+25.42%
Max Drawdown (1Y) Largest decline over 1 year	-2.62%	-10.34%	+7.72%
Max Drawdown (3Y) Largest decline over 3 years	-3.81%	-24.02%	+20.21%
Max Drawdown (5Y) Largest decline over 5 years	-17.18%	-31.71%	+14.53%
Max Drawdown (10Y) Largest decline over 10 years	-20.45%	-43.69%	+23.24%
Current Drawdown Current decline from peak	-0.11%	-0.54%	+0.43%
Average Drawdown Average peak-to-trough decline	-2.79%	-9.16%	+6.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.53%	2.57%	-2.04%

Volatility

IPHYX vs. VYMSX - Volatility Comparison

The current volatility for Voya High Yield Portfolio (IPHYX) is 1.07%, while Voya Mid Cap Research Enhanced Index Fund (VYMSX) has a volatility of 4.67%. This indicates that IPHYX experiences smaller price fluctuations and is considered to be less risky than VYMSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IPHYX	VYMSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.07%	4.67%	-3.60%
Volatility (6M) Calculated over the trailing 6-month period	2.78%	12.38%	-9.60%
Volatility (1Y) Calculated over the trailing 1-year period	3.49%	17.07%	-13.58%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	5.21%	23.32%	-18.11%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	5.52%	22.91%	-17.39%

IPHYX vs. VYMSX - Expense Ratio Comparison

IPHYX has a 0.73% expense ratio, which is lower than VYMSX's 0.82% expense ratio.

Dividends

IPHYX vs. VYMSX - Dividend Comparison

IPHYX's dividend yield for the trailing twelve months is around 4.76%, less than VYMSX's 26.16% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IPHYX Voya High Yield Portfolio	4.76%	4.47%	5.90%	5.68%	4.36%	4.26%	5.03%	5.14%	6.03%	6.82%	6.44%	6.32%
VYMSX Voya Mid Cap Research Enhanced Index Fund	26.16%	29.77%	11.50%	0.96%	6.78%	14.81%	0.79%	2.00%	13.24%	7.58%	1.83%	6.83%

Frequently Asked Questions

Can I hold both IPHYX and VYMSX in my portfolio?

IPHYX and VYMSX have a correlation of 0.49, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IPHYX or VYMSX?

VYMSX has higher volatility (4.67%) compared to IPHYX (1.07%). In terms of maximum drawdown, IPHYX dropped -32.43% vs VYMSX's -57.85%.

Which has better risk-adjusted returns?

IPHYX currently has the higher Sharpe Ratio (1.76 vs 1.60), 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.