VMVIX vs. FIUSX

Last updated Jun 24, 2026

VMVIX (Vanguard Mid-Cap Value Index Fund) and FIUSX (Delaware Opportunity Fund) are both Mid Cap Value Equities funds. Over the past 10 years, VMVIX returned 10.74%/yr vs 11.60%/yr for FIUSX. With a 0.95 correlation, they move nearly in lockstep. VMVIX charges 0.19%/yr vs 1.15%/yr for FIUSX.

Performance

VMVIX vs. FIUSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Mid-Cap Value Index Fund (VMVIX) 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, VMVIX achieves a 11.61% return, which is significantly lower than FIUSX's 20.12% return. Over the past 10 years, VMVIX has underperformed FIUSX with an annualized return of 10.74%, while FIUSX has yielded a comparatively higher 11.60% annualized return.

VMVIX

• 1D: 0.53%
• 1M: 1.27%
• YTD: 11.61%
• 6M: 10.74%
• 1Y: 22.77%
• 3Y*: 15.81%
• 5Y*: 9.14%
• 10Y*: 10.74%

FIUSX

• 1D: 1.03%
• 1M: 2.91%
• YTD: 20.12%
• 6M: 18.56%
• 1Y: 34.46%
• 3Y*: 20.30%
• 5Y*: 11.57%
• 10Y*: 11.60%

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

VMVIX vs. FIUSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VMVIX Vanguard Mid-Cap Value Index Fund	11.61%	11.22%	13.48%	10.00%	-8.00%	28.60%	2.33%	27.85%	-12.57%	16.91%
FIUSX Delaware Opportunity Fund	20.12%	12.60%	14.07%	11.68%	-9.62%	30.95%	0.88%	29.58%	-15.71%	18.67%

Correlation

The correlation between VMVIX 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	0.94
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (10Y) Calculated over the trailing 10-year period	0.95
Correlation (All Time) Calculated using the full available price history since Aug 24, 2006	0.95

The correlation between VMVIX and FIUSX has been stable across timeframes, ranging from 0.92 to 0.95 - a consistent structural relationship.

Return for Risk

VMVIX vs. FIUSX — Risk / Return Rank

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

VMVIX

VMVIX Risk / Return Rank: 64
VMVIX Sharpe Ratio Rank: 57
VMVIX Sortino Ratio Rank: 60
VMVIX Omega Ratio Rank: 51
VMVIX Calmar Ratio Rank: 80
VMVIX Martin Ratio Rank: 74

FIUSX

FIUSX Risk / Return Rank: 87
FIUSX Sharpe Ratio Rank: 85
FIUSX Sortino Ratio Rank: 83
FIUSX Omega Ratio Rank: 76
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.

VMVIX vs. FIUSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Mid-Cap Value Index Fund (VMVIX) 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.

	VMVIX	FIUSX	Difference
Sharpe ratio: Return per unit of total volatility	2.06	2.57	-0.51
Sortino ratio: Return per unit of downside risk	2.96	3.66	-0.69
Omega ratio: Gain probability vs. loss probability	1.36	1.45	-0.09
Calmar ratio: Return relative to maximum drawdown	3.44	5.36	-1.92
Martin ratio: Return relative to average drawdown	13.09	19.83	-6.74

VMVIX vs. FIUSX - Sharpe Ratio Comparison

The current VMVIX Sharpe Ratio is 2.06, which is comparable to the FIUSX Sharpe Ratio of 2.57. The chart below compares the historical Sharpe Ratios of VMVIX 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

VMVIX vs. FIUSX - Drawdown Comparison

The maximum VMVIX drawdown since its inception was -61.61%, which is greater than FIUSX's maximum drawdown of -56.30%. Use the drawdown chart below to compare losses from any high point for VMVIX and FIUSX.

Drawdown Indicators

	VMVIX	FIUSX	Difference
Max Drawdown Largest peak-to-trough decline	-61.61%	-56.30%	-5.31%
Max Drawdown (1Y) Largest decline over 1 year	-6.96%	-6.75%	-0.21%
Max Drawdown (3Y) Largest decline over 3 years	-18.94%	-21.69%	+2.75%
Max Drawdown (5Y) Largest decline over 5 years	-19.81%	-21.69%	+1.88%
Max Drawdown (10Y) Largest decline over 10 years	-43.08%	-46.38%	+3.30%
Current Drawdown Current decline from peak	-1.15%	-0.05%	-1.10%
Average Drawdown Average peak-to-trough decline	-8.44%	-9.44%	+1.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.83%	1.82%	+0.01%

Volatility

VMVIX vs. FIUSX - Volatility Comparison

The current volatility for Vanguard Mid-Cap Value Index Fund (VMVIX) is 3.39%, while Delaware Opportunity Fund (FIUSX) has a volatility of 4.28%. This indicates that VMVIX experiences smaller price fluctuations and is considered to be less risky than FIUSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VMVIX	FIUSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.39%	4.28%	-0.89%
Volatility (6M) Calculated over the trailing 6-month period	8.40%	10.73%	-2.33%
Volatility (1Y) Calculated over the trailing 1-year period	11.65%	14.11%	-2.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.00%	18.16%	-2.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.80%	20.60%	-1.80%

VMVIX vs. FIUSX - Expense Ratio Comparison

VMVIX has a 0.19% expense ratio, which is lower than FIUSX's 1.15% expense ratio.

Dividends

VMVIX vs. FIUSX - Dividend Comparison

VMVIX's dividend yield for the trailing twelve months is around 1.75%, 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%
VMVIX Vanguard Mid-Cap Value Index Fund	1.75%	1.42%	1.99%	2.15%	2.15%	1.67%	2.26%	1.95%	2.60%	1.75%	1.81%	1.91%

Frequently Asked Questions

Can I hold both VMVIX and FIUSX in my portfolio?

With a correlation of 0.92, VMVIX 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, VMVIX or FIUSX?

FIUSX has higher volatility (4.28%) compared to VMVIX (3.39%). In terms of maximum drawdown, VMVIX dropped -61.61% vs FIUSX's -56.30%.

Which has better risk-adjusted returns?

FIUSX currently has the higher Sharpe Ratio (2.57 vs 2.06), 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.