VMGAX vs. FXAIX
Compare and contrast key facts about Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX) and Fidelity 500 Index Fund (FXAIX).
VMGAX is managed by Vanguard. It was launched on Apr 3, 2008. FXAIX is a passively managed fund by Fidelity that tracks the performance of the S&P 500 Index. It was launched on Feb 17, 1988.
Performance
VMGAX vs. FXAIX - Performance Comparison
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VMGAX vs. FXAIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
VMGAX Vanguard Mega Cap Growth Index Fund Institutional Shares | -14.31% | 20.73% | 32.98% | 51.57% | -33.55% | 28.50% | 41.02% | 37.54% | -2.86% | 29.49% |
FXAIX Fidelity 500 Index Fund | -7.05% | 17.84% | 25.01% | 26.29% | -18.14% | 28.71% | 18.42% | 31.48% | -4.43% | 21.82% |
Returns By Period
In the year-to-date period, VMGAX achieves a -14.31% return, which is significantly lower than FXAIX's -7.05% return. Over the past 10 years, VMGAX has outperformed FXAIX with an annualized return of 16.40%, while FXAIX has yielded a comparatively lower 13.75% annualized return.
VMGAX
- 1D
- -0.52%
- 1M
- -8.64%
- YTD
- -14.31%
- 6M
- -12.02%
- 1Y
- 14.93%
- 3Y*
- 20.56%
- 5Y*
- 11.89%
- 10Y*
- 16.40%
FXAIX
- 1D
- -0.39%
- 1M
- -7.68%
- YTD
- -7.05%
- 6M
- -4.59%
- 1Y
- 14.42%
- 3Y*
- 17.17%
- 5Y*
- 11.40%
- 10Y*
- 13.75%
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VMGAX vs. FXAIX - Expense Ratio Comparison
VMGAX has a 0.06% expense ratio, which is higher than FXAIX's 0.02% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Return for Risk
VMGAX vs. FXAIX — Risk / Return Rank
VMGAX
FXAIX
VMGAX vs. FXAIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX) 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.
| VMGAX | FXAIX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.65 | 0.84 | -0.18 |
Sortino ratioReturn per unit of downside risk | 1.11 | 1.30 | -0.19 |
Omega ratioGain probability vs. loss probability | 1.15 | 1.20 | -0.04 |
Calmar ratioReturn relative to maximum drawdown | 0.71 | 1.05 | -0.34 |
Martin ratioReturn relative to average drawdown | 2.55 | 5.13 | -2.57 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| VMGAX | FXAIX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.65 | 0.84 | -0.18 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.53 | 0.68 | -0.15 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.75 | 0.77 | -0.01 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.58 | 0.75 | -0.17 |
Correlation
The correlation between VMGAX and FXAIX is 0.94, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
VMGAX vs. FXAIX - Dividend Comparison
VMGAX's dividend yield for the trailing twelve months is around 0.42%, less than FXAIX's 1.20% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
VMGAX Vanguard Mega Cap Growth Index Fund Institutional Shares | 0.42% | 0.36% | 0.44% | 0.51% | 0.71% | 0.42% | 0.65% | 0.86% | 1.13% | 1.23% | 1.53% | 1.44% |
FXAIX Fidelity 500 Index Fund | 1.20% | 1.11% | 1.25% | 1.45% | 1.69% | 1.22% | 1.60% | 2.06% | 2.72% | 1.97% | 2.52% | 2.83% |
Drawdowns
VMGAX vs. FXAIX - Drawdown Comparison
The maximum VMGAX drawdown since its inception was -47.97%, which is greater than FXAIX's maximum drawdown of -33.79%. Use the drawdown chart below to compare losses from any high point for VMGAX and FXAIX.
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Drawdown Indicators
| VMGAX | FXAIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -47.97% | -33.79% | -14.18% |
Max Drawdown (1Y)Largest decline over 1 year | -16.78% | -12.13% | -4.65% |
Max Drawdown (5Y)Largest decline over 5 years | -36.03% | -24.50% | -11.53% |
Max Drawdown (10Y)Largest decline over 10 years | -36.03% | -33.79% | -2.24% |
Current DrawdownCurrent decline from peak | -16.78% | -8.89% | -7.89% |
Average DrawdownAverage peak-to-trough decline | -7.48% | -3.83% | -3.65% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.69% | 2.50% | +2.19% |
Volatility
VMGAX vs. FXAIX - Volatility Comparison
Vanguard Mega Cap Growth Index Fund Institutional Shares (VMGAX) has a higher volatility of 5.62% compared to Fidelity 500 Index Fund (FXAIX) at 4.24%. This indicates that VMGAX's price experiences larger fluctuations and is considered to be riskier than FXAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| VMGAX | FXAIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.62% | 4.24% | +1.38% |
Volatility (6M)Calculated over the trailing 6-month period | 12.29% | 9.08% | +3.21% |
Volatility (1Y)Calculated over the trailing 1-year period | 23.18% | 18.13% | +5.05% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 22.66% | 16.88% | +5.78% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 21.80% | 18.03% | +3.77% |