VIGAX vs. RGAGX

Last updated Jun 4, 2026

VIGAX (Vanguard Growth Index Fund Admiral Shares) and RGAGX (American Funds The Growth Fund of America Class R-6) are both Large Cap Growth Equities funds. Over the past 10 years, VIGAX returned 18.39%/yr vs 16.39%/yr for RGAGX. With a 0.96 correlation, they move nearly in lockstep. VIGAX charges 0.05%/yr vs 0.30%/yr for RGAGX.

Performance

VIGAX vs. RGAGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Growth Index Fund Admiral Shares (VIGAX) and American Funds The Growth Fund of America Class R-6 (RGAGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VIGAX achieves a 10.82% return, which is significantly higher than RGAGX's 10.24% return. Over the past 10 years, VIGAX has outperformed RGAGX with an annualized return of 18.39%, while RGAGX has yielded a comparatively lower 16.39% annualized return.

VIGAX

• 1D: -0.28%
• 1M: 7.54%
• YTD: 10.82%
• 6M: 10.11%
• 1Y: 29.44%
• 3Y*: 26.45%
• 5Y*: 15.71%
• 10Y*: 18.39%

RGAGX

• 1D: -0.33%
• 1M: 6.84%
• YTD: 10.24%
• 6M: 9.86%
• 1Y: 26.58%
• 3Y*: 25.54%
• 5Y*: 12.86%
• 10Y*: 16.39%

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

VIGAX vs. RGAGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VIGAX Vanguard Growth Index Fund Admiral Shares	10.82%	19.43%	32.67%	46.76%	-33.14%	27.26%	40.18%	37.23%	-3.35%	27.80%
RGAGX American Funds The Growth Fund of America Class R-6	10.24%	20.08%	28.41%	37.66%	-30.53%	19.67%	38.30%	29.22%	-2.88%	26.53%

Correlation

The correlation between VIGAX and RGAGX 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	0.94
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 May 4, 2009	0.96

The correlation between VIGAX and RGAGX has been stable across timeframes, ranging from 0.94 to 0.96 - a consistent structural relationship.

Return for Risk

VIGAX vs. RGAGX — Risk / Return Rank

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

VIGAX

VIGAX Risk / Return Rank: 34
VIGAX Sharpe Ratio Rank: 43
VIGAX Sortino Ratio Rank: 38
VIGAX Omega Ratio Rank: 39
VIGAX Calmar Ratio Rank: 24
VIGAX Martin Ratio Rank: 27

RGAGX

RGAGX Risk / Return Rank: 35
RGAGX Sharpe Ratio Rank: 39
RGAGX Sortino Ratio Rank: 35
RGAGX Omega Ratio Rank: 37
RGAGX Calmar Ratio Rank: 28
RGAGX Martin Ratio Rank: 35

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.

VIGAX vs. RGAGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Growth Index Fund Admiral Shares (VIGAX) and American Funds The Growth Fund of America Class R-6 (RGAGX). 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.

	VIGAX	RGAGX	Difference
Sharpe ratio: Return per unit of total volatility	1.92	1.80	+0.12
Sortino ratio: Return per unit of downside risk	2.59	2.46	+0.13
Omega ratio: Gain probability vs. loss probability	1.33	1.32	+0.01
Calmar ratio: Return relative to maximum drawdown	1.84	1.99	-0.14
Martin ratio: Return relative to average drawdown	6.49	7.76	-1.27
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VIGAX vs. RGAGX - Sharpe Ratio Comparison

The current VIGAX Sharpe Ratio is 1.92, which is comparable to the RGAGX Sharpe Ratio of 1.80. The chart below compares the historical Sharpe Ratios of VIGAX and RGAGX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	VIGAX	RGAGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.92	1.80	+0.12
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.71	0.64	+0.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.86	0.84	+0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.86	-0.38

Drawdowns

VIGAX vs. RGAGX - Drawdown Comparison

The maximum VIGAX drawdown since its inception was -50.66%, which is greater than RGAGX's maximum drawdown of -36.19%. Use the drawdown chart below to compare losses from any high point for VIGAX and RGAGX.

Drawdown Indicators

	VIGAX	RGAGX	Difference
Max Drawdown Largest peak-to-trough decline	-50.66%	-36.19%	-14.47%
Max Drawdown (1Y) Largest decline over 1 year	-16.51%	-13.71%	-2.80%
Max Drawdown (3Y) Largest decline over 3 years	-23.04%	-21.54%	-1.50%
Max Drawdown (5Y) Largest decline over 5 years	-35.63%	-36.19%	+0.56%
Max Drawdown (10Y) Largest decline over 10 years	-35.63%	-36.19%	+0.56%
Current Drawdown Current decline from peak	-0.28%	-0.33%	+0.05%
Average Drawdown Average peak-to-trough decline	-11.96%	-5.49%	-6.47%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.68%	3.50%	+1.18%

Volatility

VIGAX vs. RGAGX - Volatility Comparison

Vanguard Growth Index Fund Admiral Shares (VIGAX) and American Funds The Growth Fund of America Class R-6 (RGAGX) have volatilities of 3.62% and 3.69%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VIGAX	RGAGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.62%	3.69%	-0.07%
Volatility (6M) Calculated over the trailing 6-month period	12.10%	11.65%	+0.45%
Volatility (1Y) Calculated over the trailing 1-year period	15.88%	15.15%	+0.73%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.35%	20.25%	+2.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.59%	19.69%	+1.90%

VIGAX vs. RGAGX - Expense Ratio Comparison

VIGAX has a 0.05% expense ratio, which is lower than RGAGX's 0.30% expense ratio.

Dividends

VIGAX vs. RGAGX - Dividend Comparison

VIGAX's dividend yield for the trailing twelve months is around 0.36%, less than RGAGX's 9.97% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RGAGX American Funds The Growth Fund of America Class R-6	9.97%	10.99%	9.29%	7.70%	4.44%	8.49%	4.57%	7.93%	12.36%	7.34%	6.95%	9.22%
VIGAX Vanguard Growth Index Fund Admiral Shares	0.36%	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 VIGAX and RGAGX in my portfolio?

With a correlation of 0.94, VIGAX and RGAGX 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, VIGAX or RGAGX?

RGAGX has higher volatility (3.69%) compared to VIGAX (3.62%). In terms of maximum drawdown, VIGAX dropped -50.66% vs RGAGX's -36.19%.

Which has better risk-adjusted returns?

VIGAX currently has the higher Sharpe Ratio (1.92 vs 1.80), 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.