DDIIX vs. FDFIX

Last updated Jun 23, 2026

DDIIX (Delaware Wealth Builder Fund) and FDFIX (Fidelity Flex 500 Index Fund) are both mutual funds - DDIIX is a Diversified Portfolio fund managed by Delaware Funds, while FDFIX is a Large Cap Blend Equities fund tracking the Fidelity U.S. Large Cap Index. Over the past 5 years, DDIIX returned 9.13%/yr vs 14.02%/yr for FDFIX. Their correlation of 0.90 suggests significant overlap in exposure. DDIIX charges 0.84%/yr vs 0.00%/yr for FDFIX.

Performance

DDIIX vs. FDFIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Delaware Wealth Builder Fund (DDIIX) and Fidelity Flex 500 Index Fund (FDFIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with DDIIX having a 9.95% return and FDFIX slightly higher at 10.05%.

DDIIX

• 1D: 0.59%
• 1M: 1.31%
• YTD: 9.95%
• 6M: 9.73%
• 1Y: 22.66%
• 3Y*: 13.86%
• 5Y*: 9.13%
• 10Y*: 8.04%

FDFIX

• 1D: 1.14%
• 1M: 0.69%
• YTD: 10.05%
• 6M: 9.52%
• 1Y: 26.74%
• 3Y*: 20.85%
• 5Y*: 14.02%
• 10Y*: —

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

DDIIX vs. FDFIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DDIIX Delaware Wealth Builder Fund	9.95%	13.58%	10.69%	12.44%	-8.50%	18.09%	3.11%	18.09%	-7.03%	7.43%
FDFIX Fidelity Flex 500 Index Fund	10.05%	17.59%	25.06%	26.27%	-18.10%	28.69%	18.46%	31.47%	-4.45%	14.41%

Correlation

The correlation between DDIIX and FDFIX is 0.91, 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	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.92
Correlation (All Time) Calculated using the full available price history since Mar 9, 2017	0.90

The correlation between DDIIX and FDFIX has been stable across timeframes, ranging from 0.88 to 0.92 - a consistent structural relationship.

Return for Risk

DDIIX vs. FDFIX — Risk / Return Rank

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

DDIIX

DDIIX Risk / Return Rank: 85
DDIIX Sharpe Ratio Rank: 88
DDIIX Sortino Ratio Rank: 86
DDIIX Omega Ratio Rank: 82
DDIIX Calmar Ratio Rank: 82
DDIIX Martin Ratio Rank: 86

FDFIX

FDFIX Risk / Return Rank: 63
FDFIX Sharpe Ratio Rank: 61
FDFIX Sortino Ratio Rank: 55
FDFIX Omega Ratio Rank: 57
FDFIX Calmar Ratio Rank: 65
FDFIX Martin Ratio Rank: 74

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.

DDIIX vs. FDFIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Delaware Wealth Builder Fund (DDIIX) and Fidelity Flex 500 Index Fund (FDFIX). 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.

	DDIIX	FDFIX	Difference
Sharpe ratio: Return per unit of total volatility	2.69	2.12	+0.57
Sortino ratio: Return per unit of downside risk	3.80	2.86	+0.94
Omega ratio: Gain probability vs. loss probability	1.50	1.38	+0.12
Calmar ratio: Return relative to maximum drawdown	3.54	2.97	+0.57
Martin ratio: Return relative to average drawdown	15.18	13.11	+2.07

DDIIX vs. FDFIX - Sharpe Ratio Comparison

The current DDIIX Sharpe Ratio is 2.69, which is comparable to the FDFIX Sharpe Ratio of 2.12. The chart below compares the historical Sharpe Ratios of DDIIX and FDFIX, 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

DDIIX vs. FDFIX - Drawdown Comparison

The maximum DDIIX drawdown since its inception was -47.01%, which is greater than FDFIX's maximum drawdown of -33.77%. Use the drawdown chart below to compare losses from any high point for DDIIX and FDFIX.

Drawdown Indicators

	DDIIX	FDFIX	Difference
Max Drawdown Largest peak-to-trough decline	-47.01%	-33.77%	-13.24%
Max Drawdown (1Y) Largest decline over 1 year	-6.46%	-8.99%	+2.53%
Max Drawdown (3Y) Largest decline over 3 years	-11.62%	-18.76%	+7.14%
Max Drawdown (5Y) Largest decline over 5 years	-15.70%	-24.51%	+8.81%
Max Drawdown (10Y) Largest decline over 10 years	-29.46%	—	—
Current Drawdown Current decline from peak	-0.53%	-1.33%	+0.80%
Average Drawdown Average peak-to-trough decline	-6.42%	-4.56%	-1.86%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.50%	2.03%	-0.53%

Volatility

DDIIX vs. FDFIX - Volatility Comparison

The current volatility for Delaware Wealth Builder Fund (DDIIX) is 3.21%, while Fidelity Flex 500 Index Fund (FDFIX) has a volatility of 4.90%. This indicates that DDIIX experiences smaller price fluctuations and is considered to be less risky than FDFIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DDIIX	FDFIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.21%	4.90%	-1.69%
Volatility (6M) Calculated over the trailing 6-month period	6.96%	10.00%	-3.04%
Volatility (1Y) Calculated over the trailing 1-year period	8.52%	12.61%	-4.09%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	10.55%	17.05%	-6.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	11.27%	18.60%	-7.33%

DDIIX vs. FDFIX - Expense Ratio Comparison

DDIIX has a 0.84% expense ratio, which is higher than FDFIX's 0.00% expense ratio.

Dividends

DDIIX vs. FDFIX - Dividend Comparison

DDIIX's dividend yield for the trailing twelve months is around 6.51%, more than FDFIX's 1.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DDIIX Delaware Wealth Builder Fund	6.51%	7.38%	6.40%	4.23%	8.05%	7.15%	2.54%	4.46%	9.67%	2.88%	2.19%	2.79%
FDFIX Fidelity Flex 500 Index Fund	1.04%	1.11%	1.26%	1.48%	1.70%	1.27%	1.52%	1.78%	2.16%	0.50%	0.00%	0.00%

Frequently Asked Questions

Can I hold both DDIIX and FDFIX in my portfolio?

With a correlation of 0.91, DDIIX and FDFIX 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, DDIIX or FDFIX?

FDFIX has higher volatility (4.90%) compared to DDIIX (3.21%). In terms of maximum drawdown, DDIIX dropped -47.01% vs FDFIX's -33.77%.

Which has better risk-adjusted returns?

DDIIX currently has the higher Sharpe Ratio (2.69 vs 2.12), 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.