FDECX vs. FXAIX
FDECX (Fidelity Advisor Capital Development Fund Class C) and FXAIX (Fidelity 500 Index Fund) are both mutual funds - FDECX is a Large Cap Value Equities fund managed by Fidelity, while FXAIX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, FDECX returned 15.08%/yr vs 15.80%/yr for FXAIX. Their correlation of 0.93 suggests significant overlap in exposure. FDECX charges 1.80%/yr vs 0.02%/yr for FXAIX.
Performance
FDECX vs. FXAIX - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, FDECX achieves a 8.72% return, which is significantly lower than FXAIX's 9.79% return. Both investments have delivered pretty close results over the past 10 years, with FDECX having a 15.08% annualized return and FXAIX not far ahead at 15.80%.
FDECX
- 1D
- -0.75%
- 1M
- 0.44%
- YTD
- 8.72%
- 6M
- 7.97%
- 1Y
- 27.21%
- 3Y*
- 24.27%
- 5Y*
- 15.09%
- 10Y*
- 15.08%
FXAIX
- 1D
- -0.37%
- 1M
- 0.10%
- YTD
- 9.79%
- 6M
- 8.79%
- 1Y
- 25.51%
- 3Y*
- 21.39%
- 5Y*
- 13.60%
- 10Y*
- 15.80%
FDECX vs. FXAIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
FDECX Fidelity Advisor Capital Development Fund Class C | 8.72% | 26.17% | 25.61% | 22.69% | -9.17% | 23.92% | 7.70% | 29.71% | -10.22% | 16.40% |
FXAIX Fidelity 500 Index Fund | 9.79% | 17.84% | 25.01% | 26.29% | -18.14% | 28.71% | 18.42% | 31.48% | -4.43% | 21.82% |
Correlation
The correlation between FDECX and FXAIX is 0.94, 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 | 0.94 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.93 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.92 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.91 |
Correlation (All Time) Calculated using the full available price history since May 4, 2011 | 0.93 |
The correlation between FDECX and FXAIX has been stable across timeframes, ranging from 0.91 to 0.94 - a consistent structural relationship.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
FDECX vs. FXAIX — Risk / Return Rank
FDECX
FXAIX
FDECX vs. FXAIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Fidelity Advisor Capital Development Fund Class C (FDECX) and Fidelity 500 Index Fund (FXAIX). 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.
| FDECX | FXAIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.05 | ||
| Sortino ratioReturn per unit of downside risk | +0.14 | ||
| Omega ratioGain probability vs. loss probability | 1.39 | 1.39 | 0.00 |
| Calmar ratioReturn relative to maximum drawdown | 2.92 | 3.02 | -0.09 |
| Martin ratioReturn relative to average drawdown | 13.11 | 13.62 | -0.52 |
Loading charts...
Drawdowns
FDECX vs. FXAIX - Drawdown Comparison
The maximum FDECX drawdown since its inception was -58.50%, which is greater than FXAIX's maximum drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for FDECX and FXAIX.
Loading charts...
Drawdown Indicators
| FDECX | FXAIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -58.50% | -33.79% | -24.71% |
Max Drawdown (1Y)Largest decline over 1 year | -9.75% | -8.89% | -0.86% |
Max Drawdown (3Y)Largest decline over 3 years | -20.37% | -18.76% | -1.61% |
Max Drawdown (5Y)Largest decline over 5 years | -22.40% | -24.50% | +2.10% |
Max Drawdown (10Y)Largest decline over 10 years | -36.71% | -33.79% | -2.92% |
Current DrawdownCurrent decline from peak | -1.03% | -1.72% | +0.69% |
Average DrawdownAverage peak-to-trough decline | -8.91% | -3.79% | -5.12% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.17% | 1.97% | +0.20% |
Volatility
FDECX vs. FXAIX - Volatility Comparison
The current volatility for Fidelity Advisor Capital Development Fund Class C (FDECX) is 4.44%, while Fidelity 500 Index Fund (FXAIX) has a volatility of 4.68%. This indicates that FDECX experiences smaller price fluctuations and is considered to be less risky than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| FDECX | FXAIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.44% | 4.68% | -0.24% |
Volatility (6M)Calculated over the trailing 6-month period | 10.09% | 9.84% | +0.25% |
Volatility (1Y)Calculated over the trailing 1-year period | 12.96% | 12.50% | +0.46% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 17.72% | 17.00% | +0.72% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.89% | 18.12% | +0.77% |
FDECX vs. FXAIX - Expense Ratio Comparison
FDECX has a 1.80% expense ratio, which is higher than FXAIX's 0.02% expense ratio.
Dividends
FDECX vs. FXAIX - Dividend Comparison
FDECX's dividend yield for the trailing twelve months is around 10.67%, more than FXAIX's 1.04% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FDECX Fidelity Advisor Capital Development Fund Class C | 10.67% | 11.60% | 9.37% | 3.86% | 5.15% | 5.29% | 3.62% | 7.13% | 15.93% | 5.86% | 2.18% | 5.15% |
FXAIX Fidelity 500 Index Fund | 1.04% | 1.11% | 1.25% | 1.45% | 1.69% | 1.22% | 1.60% | 2.06% | 2.72% | 1.97% | 2.52% | 2.83% |
Frequently Asked Questions
With a correlation of 0.94, FDECX and FXAIX 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.
FXAIX has higher volatility (4.68%) compared to FDECX (4.44%). In terms of maximum drawdown, FDECX dropped -58.50% vs FXAIX's -33.79%.
FDECX currently has the higher Sharpe Ratio (2.20 vs 2.15), 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.
Find the right allocation for FDECX and FXAIX
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer