MLPIX vs. FIUSX

Last updated Jul 15, 2026

MLPIX (ProFunds Mid Cap Value Fund) and FIUSX (Delaware Opportunity Fund) are both Mid Cap Value Equities funds. Over the past 10 years, MLPIX returned 8.59%/yr vs 10.88%/yr for FIUSX. Their correlation of 0.94 suggests significant overlap in exposure. MLPIX charges 1.78%/yr vs 1.15%/yr for FIUSX.

Performance

MLPIX vs. FIUSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProFunds Mid Cap Value Fund (MLPIX) and Delaware Opportunity Fund (FIUSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MLPIX achieves a 11.08% return, which is significantly lower than FIUSX's 20.15% return. Over the past 10 years, MLPIX has underperformed FIUSX with an annualized return of 8.59%, while FIUSX has yielded a comparatively higher 10.88% annualized return.

MLPIX

• 1D: -0.05%
• 1M: -0.04%
• 6M: 6.41%
• YTD: 11.08%
• 1Y: 14.95%
• 3Y*: 10.34%
• 5Y*: 7.29%
• 10Y*: 8.59%

FIUSX

• 1D: -0.25%
• 1M: 0.28%
• 6M: 15.65%
• YTD: 20.15%
• 1Y: 29.25%
• 3Y*: 18.16%
• 5Y*: 11.41%
• 10Y*: 10.88%

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

MLPIX vs. FIUSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MLPIX ProFunds Mid Cap Value Fund	11.08%	5.48%	9.65%	13.32%	-8.61%	28.23%	1.85%	24.02%	-13.08%	10.45%
FIUSX Delaware Opportunity Fund	20.15%	12.60%	14.07%	11.68%	-9.62%	30.95%	0.88%	29.58%	-15.71%	18.67%

Correlation

The correlation between MLPIX and FIUSX is 0.92, 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	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Aug 31, 2001	0.94

The correlation between MLPIX and FIUSX has been stable across timeframes, ranging from 0.92 to 0.94 - a consistent structural relationship.

Return for Risk

MLPIX vs. FIUSX — Risk / Return Rank

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

MLPIX

MLPIX Risk / Return Rank: 25
MLPIX Sharpe Ratio Rank: 23
MLPIX Sortino Ratio Rank: 26
MLPIX Omega Ratio Rank: 23
MLPIX Calmar Ratio Rank: 26
MLPIX Martin Ratio Rank: 27

FIUSX

FIUSX Risk / Return Rank: 86
FIUSX Sharpe Ratio Rank: 82
FIUSX Sortino Ratio Rank: 83
FIUSX Omega Ratio Rank: 77
FIUSX Calmar Ratio Rank: 95
FIUSX Martin Ratio Rank: 95

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.

MLPIX vs. FIUSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProFunds Mid Cap Value Fund (MLPIX) and Delaware Opportunity Fund (FIUSX). 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.

	MLPIX	FIUSX	Difference
Sharpe ratio: Return per unit of total volatility	1.01	2.13	-1.12
Sortino ratio: Return per unit of downside risk	1.57	3.11	-1.54
Omega ratio: Gain probability vs. loss probability	1.18	1.38	-0.19
Calmar ratio: Return relative to maximum drawdown	1.41	4.44	-3.02
Martin ratio: Return relative to average drawdown	4.77	16.32	-11.55

MLPIX vs. FIUSX - Sharpe Ratio Comparison

The current MLPIX Sharpe Ratio is 1.01, which is lower than the FIUSX Sharpe Ratio of 2.13. The chart below compares the historical Sharpe Ratios of MLPIX and FIUSX, 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

MLPIX vs. FIUSX - Drawdown Comparison

The maximum MLPIX drawdown since its inception was -60.11%, which is greater than FIUSX's maximum drawdown of -56.30%. Use the drawdown chart below to compare losses from any high point for MLPIX and FIUSX.

Drawdown Indicators

	MLPIX	FIUSX	Difference
Max Drawdown Largest peak-to-trough decline	-60.11%	-56.30%	-3.81%
Max Drawdown (1Y) Largest decline over 1 year	-10.68%	-6.75%	-3.93%
Max Drawdown (3Y) Largest decline over 3 years	-23.24%	-21.69%	-1.55%
Max Drawdown (5Y) Largest decline over 5 years	-23.24%	-21.69%	-1.55%
Max Drawdown (10Y) Largest decline over 10 years	-45.96%	-46.38%	+0.42%
Current Drawdown Current decline from peak	-0.79%	-1.28%	+0.49%
Average Drawdown Average peak-to-trough decline	-9.33%	-9.43%	+0.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.16%	1.83%	+1.33%

Volatility

MLPIX vs. FIUSX - Volatility Comparison

ProFunds Mid Cap Value Fund (MLPIX) and Delaware Opportunity Fund (FIUSX) have volatilities of 3.67% and 3.65%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MLPIX	FIUSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.67%	3.65%	+0.02%
Volatility (6M) Calculated over the trailing 6-month period	10.44%	10.63%	-0.19%
Volatility (1Y) Calculated over the trailing 1-year period	15.03%	14.07%	+0.96%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.37%	18.11%	+1.26%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.31%	20.51%	+0.80%

MLPIX vs. FIUSX - Expense Ratio Comparison

MLPIX has a 1.78% expense ratio, which is higher than FIUSX's 1.15% expense ratio.

Dividends

MLPIX vs. FIUSX - Dividend Comparison

MLPIX's dividend yield for the trailing twelve months is around 0.42%, less than FIUSX's 9.60% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FIUSX Delaware Opportunity Fund	9.60%	11.53%	12.68%	2.85%	8.96%	5.62%	1.60%	40.65%	12.11%	6.00%	4.23%	1.14%
MLPIX ProFunds Mid Cap Value Fund	0.42%	0.47%	0.00%	0.00%	0.00%	0.89%	0.22%	0.40%	3.92%	10.95%	0.56%	0.00%

Frequently Asked Questions

Can I hold both MLPIX and FIUSX in my portfolio?

With a correlation of 0.92, MLPIX and FIUSX 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, MLPIX or FIUSX?

MLPIX has higher volatility (3.67%) compared to FIUSX (3.65%). In terms of maximum drawdown, MLPIX dropped -60.11% vs FIUSX's -56.30%.

Which has better risk-adjusted returns?

FIUSX currently has the higher Sharpe Ratio (2.13 vs 1.01), 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.