IPMIX vs. BIGTX

Last updated Jun 4, 2026

IPMIX (Voya Index Plus MidCap Portfolio) and BIGTX (The Texas Fund) are both Mid Cap Blend Equities funds. Over the past 10 years, IPMIX returned 10.51%/yr vs 10.78%/yr for BIGTX. Their correlation of 0.87 suggests significant overlap in exposure. IPMIX charges 0.60%/yr vs 1.67%/yr for BIGTX.

Performance

IPMIX vs. BIGTX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Voya Index Plus MidCap Portfolio (IPMIX) and The Texas Fund (BIGTX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IPMIX achieves a 14.23% return, which is significantly lower than BIGTX's 26.40% return. Both investments have delivered pretty close results over the past 10 years, with IPMIX having a 10.51% annualized return and BIGTX not far ahead at 10.78%.

IPMIX

• 1D: 1.02%
• 1M: 4.20%
• YTD: 14.23%
• 6M: 14.50%
• 1Y: 25.41%
• 3Y*: 17.22%
• 5Y*: 8.79%
• 10Y*: 10.51%

BIGTX

• 1D: 1.52%
• 1M: 7.30%
• YTD: 26.40%
• 6M: 23.78%
• 1Y: 36.15%
• 3Y*: 20.96%
• 5Y*: 9.45%
• 10Y*: 10.78%

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

IPMIX vs. BIGTX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IPMIX Voya Index Plus MidCap Portfolio	14.23%	8.27%	15.17%	17.49%	-14.10%	27.70%	8.18%	26.62%	-14.34%	13.66%
BIGTX The Texas Fund	26.40%	5.98%	15.76%	11.32%	-6.93%	23.90%	13.11%	9.61%	-11.44%	11.58%

Correlation

The correlation between IPMIX and BIGTX is 0.66, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.66
Correlation (3Y) Calculated over the trailing 3-year period	0.79
Correlation (5Y) Calculated over the trailing 5-year period	0.83
Correlation (10Y) Calculated over the trailing 10-year period	0.86
Correlation (All Time) Calculated using the full available price history since Jan 3, 2014	0.87

Over the past year, the correlation between IPMIX and BIGTX has dropped to 0.66 - well below their long-term average of 0.87, suggesting their price drivers have been diverging.

Return for Risk

IPMIX vs. BIGTX — Risk / Return Rank

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

IPMIX

IPMIX Risk / Return Rank: 33
IPMIX Sharpe Ratio Rank: 26
IPMIX Sortino Ratio Rank: 24
IPMIX Omega Ratio Rank: 36
IPMIX Calmar Ratio Rank: 40
IPMIX Martin Ratio Rank: 40

BIGTX

BIGTX Risk / Return Rank: 82
BIGTX Sharpe Ratio Rank: 85
BIGTX Sortino Ratio Rank: 77
BIGTX Omega Ratio Rank: 67
BIGTX Calmar Ratio Rank: 90
BIGTX Martin Ratio Rank: 88

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.

IPMIX vs. BIGTX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Voya Index Plus MidCap Portfolio (IPMIX) and The Texas Fund (BIGTX). 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.

	IPMIX	BIGTX	Difference
Sharpe ratio: Return per unit of total volatility	1.47	2.74	-1.27
Sortino ratio: Return per unit of downside risk	2.05	3.68	-1.63
Omega ratio: Gain probability vs. loss probability	1.32	1.46	-0.14
Calmar ratio: Return relative to maximum drawdown	2.39	4.71	-2.32
Martin ratio: Return relative to average drawdown	8.63	17.23	-8.59
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IPMIX vs. BIGTX - Sharpe Ratio Comparison

The current IPMIX Sharpe Ratio is 1.47, which is lower than the BIGTX Sharpe Ratio of 2.74. The chart below compares the historical Sharpe Ratios of IPMIX and BIGTX, 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

	IPMIX	BIGTX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.47	2.74	-1.27
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.43	0.07	+0.35
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.48	0.12	+0.36
Sharpe Ratio (All Time) Calculated using the full available price history	0.40	0.09	+0.31

Drawdowns

IPMIX vs. BIGTX - Drawdown Comparison

The maximum IPMIX drawdown since its inception was -54.71%, smaller than the maximum BIGTX drawdown of -77.89%. Use the drawdown chart below to compare losses from any high point for IPMIX and BIGTX.

Drawdown Indicators

	IPMIX	BIGTX	Difference
Max Drawdown Largest peak-to-trough decline	-54.71%	-77.89%	+23.18%
Max Drawdown (1Y) Largest decline over 1 year	-12.67%	-8.07%	-4.60%
Max Drawdown (3Y) Largest decline over 3 years	-23.97%	-77.89%	+53.92%
Max Drawdown (5Y) Largest decline over 5 years	-24.28%	-77.89%	+53.61%
Max Drawdown (10Y) Largest decline over 10 years	-43.76%	-77.89%	+34.13%
Current Drawdown Current decline from peak	-7.47%	-64.86%	+57.39%
Average Drawdown Average peak-to-trough decline	-10.15%	-17.16%	+7.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.36%	2.20%	+1.16%

Volatility

IPMIX vs. BIGTX - Volatility Comparison

Voya Index Plus MidCap Portfolio (IPMIX) has a higher volatility of 14.24% compared to The Texas Fund (BIGTX) at 4.04%. This indicates that IPMIX's price experiences larger fluctuations and is considered to be riskier than BIGTX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IPMIX	BIGTX	Difference
Volatility (1M) Calculated over the trailing 1-month period	14.24%	4.04%	+10.20%
Volatility (6M) Calculated over the trailing 6-month period	17.36%	10.19%	+7.17%
Volatility (1Y) Calculated over the trailing 1-year period	20.56%	13.90%	+6.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.29%	126.63%	-105.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.08%	90.64%	-68.56%

IPMIX vs. BIGTX - Expense Ratio Comparison

IPMIX has a 0.60% expense ratio, which is lower than BIGTX's 1.67% expense ratio.

Dividends

IPMIX vs. BIGTX - Dividend Comparison

IPMIX's dividend yield for the trailing twelve months is around 6.61%, more than BIGTX's 5.84% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BIGTX The Texas Fund	5.84%	7.38%	3.52%	2.51%	3.06%	5.27%	0.07%	0.08%	2.27%	0.00%	0.00%	0.00%
IPMIX Voya Index Plus MidCap Portfolio	6.61%	7.59%	4.15%	4.66%	29.03%	1.13%	1.20%	10.96%	16.62%	7.62%	10.43%	17.41%

Frequently Asked Questions

Can I hold both IPMIX and BIGTX in my portfolio?

IPMIX and BIGTX have a correlation of 0.66, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, IPMIX or BIGTX?

IPMIX has higher volatility (14.24%) compared to BIGTX (4.04%). In terms of maximum drawdown, IPMIX dropped -54.71% vs BIGTX's -77.89%.

Which has better risk-adjusted returns?

BIGTX currently has the higher Sharpe Ratio (2.74 vs 1.47), 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.