INDEX vs. VIGAX

Last updated Jun 17, 2026

INDEX (Index Funds S&P 500 Equal Weight) and VIGAX (Vanguard Growth Index Fund Admiral Shares) are both mutual funds - INDEX is a Large Cap Blend Equities fund managed by Fidelity, while VIGAX is a Large Cap Growth Equities fund tracking the CRSP US Large Cap Growth Index. Over the past 10 years, INDEX returned 13.20%/yr vs 18.28%/yr for VIGAX. Their correlation of 0.83 suggests significant overlap in exposure. INDEX charges 0.25%/yr vs 0.05%/yr for VIGAX.

Performance

INDEX vs. VIGAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Index Funds S&P 500 Equal Weight (INDEX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, INDEX achieves a 10.83% return, which is significantly higher than VIGAX's 7.87% return. Over the past 10 years, INDEX has underperformed VIGAX with an annualized return of 13.20%, while VIGAX has yielded a comparatively higher 18.28% annualized return.

INDEX

• 1D: 1.71%
• 1M: 2.10%
• YTD: 10.83%
• 6M: 11.63%
• 1Y: 26.61%
• 3Y*: 19.35%
• 5Y*: 11.60%
• 10Y*: 13.20%

VIGAX

• 1D: 2.71%
• 1M: 0.25%
• YTD: 7.87%
• 6M: 8.81%
• 1Y: 24.60%
• 3Y*: 24.01%
• 5Y*: 14.41%
• 10Y*: 18.28%

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

INDEX vs. VIGAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
INDEX Index Funds S&P 500 Equal Weight	10.83%	17.77%	24.73%	10.58%	-11.84%	29.10%	12.75%	28.98%	-7.83%	18.70%
VIGAX Vanguard Growth Index Fund Admiral Shares	7.87%	19.43%	32.67%	46.76%	-33.14%	27.26%	40.18%	37.23%	-3.35%	27.80%

Correlation

The correlation between INDEX and VIGAX is 0.93, 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	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.90
Correlation (5Y) Calculated over the trailing 5-year period	0.87
Correlation (10Y) Calculated over the trailing 10-year period	0.83
Correlation (All Time) Calculated using the full available price history since May 11, 2015	0.83

The correlation between INDEX and VIGAX shifts across timeframes, from 0.83 (10 years) to 0.93 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

INDEX vs. VIGAX — Risk / Return Rank

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

INDEX

INDEX Risk / Return Rank: 77
INDEX Sharpe Ratio Rank: 78
INDEX Sortino Ratio Rank: 73
INDEX Omega Ratio Rank: 73
INDEX Calmar Ratio Rank: 77
INDEX Martin Ratio Rank: 86

VIGAX

VIGAX Risk / Return Rank: 33
VIGAX Sharpe Ratio Rank: 40
VIGAX Sortino Ratio Rank: 35
VIGAX Omega Ratio Rank: 37
VIGAX Calmar Ratio Rank: 25
VIGAX Martin Ratio Rank: 27

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.

INDEX vs. VIGAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Index Funds S&P 500 Equal Weight (INDEX) and Vanguard Growth Index Fund Admiral Shares (VIGAX). 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.

	INDEX	VIGAX	Difference
Sharpe ratio: Return per unit of total volatility	2.26	1.58	+0.68
Sortino ratio: Return per unit of downside risk	3.05	2.15	+0.90
Omega ratio: Gain probability vs. loss probability	1.41	1.28	+0.13
Calmar ratio: Return relative to maximum drawdown	3.13	1.59	+1.54
Martin ratio: Return relative to average drawdown	14.25	5.51	+8.74

INDEX vs. VIGAX - Sharpe Ratio Comparison

The current INDEX Sharpe Ratio is 2.26, which is higher than the VIGAX Sharpe Ratio of 1.58. The chart below compares the historical Sharpe Ratios of INDEX and VIGAX, 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

INDEX vs. VIGAX - Drawdown Comparison

The maximum INDEX drawdown since its inception was -38.82%, smaller than the maximum VIGAX drawdown of -50.66%. Use the drawdown chart below to compare losses from any high point for INDEX and VIGAX.

Drawdown Indicators

	INDEX	VIGAX	Difference
Max Drawdown Largest peak-to-trough decline	-38.82%	-50.66%	+11.84%
Max Drawdown (1Y) Largest decline over 1 year	-8.93%	-16.51%	+7.58%
Max Drawdown (3Y) Largest decline over 3 years	-18.75%	-23.04%	+4.29%
Max Drawdown (5Y) Largest decline over 5 years	-21.52%	-35.63%	+14.11%
Max Drawdown (10Y) Largest decline over 10 years	-38.82%	-35.63%	-3.19%
Current Drawdown Current decline from peak	-0.64%	-2.94%	+2.30%
Average Drawdown Average peak-to-trough decline	-4.62%	-11.95%	+7.33%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.96%	4.77%	-2.81%

Volatility

INDEX vs. VIGAX - Volatility Comparison

The current volatility for Index Funds S&P 500 Equal Weight (INDEX) is 4.70%, while Vanguard Growth Index Fund Admiral Shares (VIGAX) has a volatility of 6.32%. This indicates that INDEX experiences smaller price fluctuations and is considered to be less risky than VIGAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	INDEX	VIGAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.70%	6.32%	-1.62%
Volatility (6M) Calculated over the trailing 6-month period	9.83%	13.32%	-3.49%
Volatility (1Y) Calculated over the trailing 1-year period	12.40%	16.73%	-4.33%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.85%	22.47%	-5.62%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.69%	21.65%	-2.96%

INDEX vs. VIGAX - Expense Ratio Comparison

INDEX has a 0.25% expense ratio, which is higher than VIGAX's 0.05% 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%.

Dividends

INDEX vs. VIGAX - Dividend Comparison

INDEX's dividend yield for the trailing twelve months is around 0.94%, more than VIGAX's 0.37% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
INDEX Index Funds S&P 500 Equal Weight	0.94%	1.04%	1.97%	1.56%	3.25%	1.81%	1.53%	1.61%	3.09%	1.15%	0.00%	0.00%
VIGAX Vanguard Growth Index Fund Admiral Shares	0.37%	0.40%	0.46%	0.57%	0.69%	0.47%	0.66%	0.94%	1.31%	1.14%	1.39%	1.31%

Frequently Asked Questions

Can I hold both INDEX and VIGAX in my portfolio?

With a correlation of 0.93, INDEX and VIGAX 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, INDEX or VIGAX?

VIGAX has higher volatility (6.32%) compared to INDEX (4.70%). In terms of maximum drawdown, INDEX dropped -38.82% vs VIGAX's -50.66%.

Which has better risk-adjusted returns?

INDEX currently has the higher Sharpe Ratio (2.26 vs 1.58), 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.