ICAFX vs. VIGIX

Last updated Aug 1, 2026

ICAFX (American Funds The Investment Company of America Fund Class F2) and VIGIX (Vanguard Growth Index Fund Institutional Shares) are both Large Cap Growth Equities funds. ICAFX is actively managed, while VIGIX is passively managed. Over the past 10 years, ICAFX returned 13.82%/yr vs 17.15%/yr for VIGIX. Their correlation of 0.92 means they have usually moved in the same direction. ICAFX charges 0.37%/yr vs 0.03%/yr for VIGIX.

Performance

ICAFX vs. VIGIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds The Investment Company of America Fund Class F2 (ICAFX) and Vanguard Growth Index Fund Institutional Shares (VIGIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, ICAFX achieves a 8.27% return, which is significantly higher than VIGIX's 3.82% return. Over the past 10 years, ICAFX has underperformed VIGIX with an annualized return of 13.82%, while VIGIX has yielded a comparatively higher 17.15% annualized return.

ICAFX

• 1D: 1.46%
• 1M: -1.10%
• 6M: 6.45%
• YTD: 8.27%
• 1Y: 17.16%
• 3Y*: 20.58%
• 5Y*: 14.04%
• 10Y*: 13.82%
• ALL TIME*: 11.52%

VIGIX

• 1D: 2.71%
• 1M: -1.61%
• 6M: 5.20%
• YTD: 3.82%
• 1Y: 14.05%
• 3Y*: 20.61%
• 5Y*: 11.91%
• 10Y*: 17.15%
• ALL TIME*: 9.61%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
ICAFX American Funds The Investment Company of America Fund Class F2	$0.00	$0.00	$0.00
VIGIX Vanguard Growth Index Fund Institutional Shares	$0.00	$0.00	$0.00

ICAFX vs. VIGIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ICAFX American Funds The Investment Company of America Fund Class F2	8.27%	20.69%	25.14%	28.82%	-15.32%	25.35%	14.70%	24.32%	-8.02%	19.75%
VIGIX Vanguard Growth Index Fund Institutional Shares	3.82%	19.44%	32.68%	46.77%	-33.13%	27.27%	40.19%	37.26%	-3.34%	27.81%

Correlation

The correlation between ICAFX and VIGIX is 0.92, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.92
Correlation (3Y) Balances recent behavior with more history.	0.90
Correlation (5Y) Shows whether the relationship held over a longer period.	0.91
Correlation (10Y) Provides a long-term view across more market conditions.	0.90
Correlation (All Time) Calculated using the full available price history since Aug 1, 2008	0.92

The correlation between ICAFX and VIGIX has been stable across timeframes, ranging from 0.90 to 0.92 - a consistent structural relationship.

Return for Risk

ICAFX vs. VIGIX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

ICAFX

ICAFX Risk / Return Rank: 36
ICAFX Sharpe Ratio Rank: 35
ICAFX Sortino Ratio Rank: 33
ICAFX Omega Ratio Rank: 34
ICAFX Calmar Ratio Rank: 33
ICAFX Martin Ratio Rank: 44

VIGIX

VIGIX Risk / Return Rank: 18
VIGIX Sharpe Ratio Rank: 19
VIGIX Sortino Ratio Rank: 19
VIGIX Omega Ratio Rank: 19
VIGIX Calmar Ratio Rank: 15
VIGIX Martin Ratio Rank: 17

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

ICAFX vs. VIGIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds The Investment Company of America Fund Class F2 (ICAFX) and Vanguard Growth Index Fund Institutional Shares (VIGIX). 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.

	ICAFX	VIGIX	Difference
Sharpe ratio: Return per unit of total volatility	1.14	0.66	+0.49
Sortino ratio: Return per unit of downside risk	1.64	1.01	+0.62
Omega ratio: Gain probability vs. loss probability	1.21	1.12	+0.09
Calmar ratio: Return relative to maximum drawdown	1.53	0.71	+0.82
Martin ratio: Return relative to average drawdown	6.50	2.26	+4.24

ICAFX vs. VIGIX - Sharpe Ratio Comparison

The current ICAFX Sharpe Ratio is 1.14, which is higher than the VIGIX Sharpe Ratio of 0.66. The chart below compares the historical Sharpe Ratios of ICAFX and VIGIX, 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

ICAFX vs. VIGIX - Drawdown Comparison

The maximum ICAFX drawdown since its inception was -42.84%, smaller than the maximum VIGIX drawdown of -56.95%. Use the drawdown chart below to compare losses from any high point for ICAFX and VIGIX.

Drawdown Indicators

	ICAFX	VIGIX	Difference
Max Drawdown Largest peak-to-trough decline	-42.84%	-56.95%	+14.11%
Max Drawdown (1Y) Largest decline over 1 year	-10.05%	-16.51%	+6.46%
Max Drawdown (3Y) Largest decline over 3 years	-17.39%	-23.03%	+5.64%
Max Drawdown (5Y) Largest decline over 5 years	-24.21%	-35.62%	+11.41%
Max Drawdown (10Y) Largest decline over 10 years	-31.07%	-35.62%	+4.55%
Current Drawdown Current decline from peak	-2.45%	-6.59%	+4.14%
Average Drawdown Average peak-to-trough decline	-5.45%	-16.21%	+10.76%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.36%	5.16%	-2.80%

Volatility

ICAFX vs. VIGIX - Volatility Comparison

The current volatility for American Funds The Investment Company of America Fund Class F2 (ICAFX) is 3.36%, while Vanguard Growth Index Fund Institutional Shares (VIGIX) has a volatility of 5.40%. This indicates that ICAFX experiences smaller price fluctuations and is considered to be less risky than VIGIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ICAFX	VIGIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.36%	5.40%	-2.04%
Volatility (6M) Calculated over the trailing 6-month period	10.63%	14.23%	-3.60%
Volatility (1Y) Calculated over the trailing 1-year period	13.41%	17.76%	-4.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.13%	22.62%	-6.49%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.59%	21.69%	-5.10%

ICAFX vs. VIGIX - Expense Ratio Comparison

ICAFX has a 0.37% expense ratio, which is higher than VIGIX's 0.03% expense ratio.

Dividends

ICAFX vs. VIGIX - Dividend Comparison

ICAFX's dividend yield for the trailing twelve months is around 9.45%, more than VIGIX's 0.40% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ICAFX American Funds The Investment Company of America Fund Class F2	9.45%	10.79%	9.49%	5.15%	6.33%	7.14%	1.84%	6.34%	9.84%	7.25%	5.67%	9.10%
VIGIX Vanguard Growth Index Fund Institutional Shares	0.40%	0.41%	0.47%	0.58%	0.70%	0.48%	0.66%	0.95%	1.32%	1.15%	1.40%	1.31%

Frequently Asked Questions

Can I hold both ICAFX and VIGIX in my portfolio?

With a correlation of 0.92, ICAFX and VIGIX 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, ICAFX or VIGIX?

VIGIX has higher volatility (5.40%) compared to ICAFX (3.36%). In terms of maximum drawdown, ICAFX dropped -42.84% vs VIGIX's -56.95%.

Which has better risk-adjusted returns?

ICAFX currently has the higher Sharpe Ratio (1.14 vs 0.66), 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.