ANCFX vs. FSPGX

Last updated Apr 1, 2026

Compare and contrast key facts about American Funds Fundamental Investors Class A (ANCFX) and Fidelity Large Cap Growth Index Fund (FSPGX).

ANCFX is managed by American Funds. It was launched on Jan 8, 1978. FSPGX is managed by Fidelity.

Performance

ANCFX vs. FSPGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Funds Fundamental Investors Class A (ANCFX) and Fidelity Large Cap Growth Index Fund (FSPGX). The values are adjusted to include any dividend payments, if applicable.

ANCFX vs. FSPGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ANCFX American Funds Fundamental Investors Class A	-6.13%	24.21%	22.73%	25.86%	-16.66%	22.43%	14.92%	27.07%	-8.13%	21.95%
FSPGX Fidelity Large Cap Growth Index Fund	-13.03%	18.54%	33.27%	42.77%	-29.17%	27.57%	38.46%	36.38%	-1.79%	27.70%

Returns By Period

In the year-to-date period, ANCFX achieves a -6.13% return, which is significantly higher than FSPGX's -13.03% return.

ANCFX

• 1D: -0.62%
• 1M: -9.88%
• YTD: -6.13%
• 6M: -2.09%
• 1Y: 20.46%
• 3Y*: 19.35%
• 5Y*: 11.57%
• 10Y*: 12.92%

FSPGX

• 1D: -0.45%
• 1M: -8.63%
• YTD: -13.03%
• 6M: -12.06%
• 1Y: 14.49%
• 3Y*: 19.68%
• 5Y*: 11.91%
• 10Y*: —

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

ANCFX vs. FSPGX - Expense Ratio Comparison

ANCFX has a 0.59% expense ratio, which is higher than FSPGX's 0.04% expense ratio.

ANCFX

American Funds Fundamental Investors Class A

FSPGX

Fidelity Large Cap Growth Index Fund

Return for Risk

ANCFX vs. FSPGX — Risk / Return Rank

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

ANCFX

ANCFX Risk / Return Rank: 70
ANCFX Sharpe Ratio Rank: 67
ANCFX Sortino Ratio Rank: 72
ANCFX Omega Ratio Rank: 67
ANCFX Calmar Ratio Rank: 71
ANCFX Martin Ratio Rank: 75

FSPGX

FSPGX Risk / Return Rank: 28
FSPGX Sharpe Ratio Rank: 29
FSPGX Sortino Ratio Rank: 33
FSPGX Omega Ratio Rank: 32
FSPGX Calmar Ratio Rank: 25
FSPGX Martin Ratio Rank: 23

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.

ANCFX vs. FSPGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Funds Fundamental Investors Class A (ANCFX) and Fidelity Large Cap Growth Index Fund (FSPGX). 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.

	ANCFX	FSPGX	Difference
Sharpe ratio Return per unit of total volatility	1.16	0.66	+0.50
Sortino ratio Return per unit of downside risk	1.75	1.10	+0.65
Omega ratio Gain probability vs. loss probability	1.25	1.15	+0.09
Calmar ratio Return relative to maximum drawdown	1.61	0.72	+0.89
Martin ratio Return relative to average drawdown	7.19	2.51	+4.68
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ANCFX vs. FSPGX - Sharpe Ratio Comparison

The current ANCFX Sharpe Ratio is 1.16, which is higher than the FSPGX Sharpe Ratio of 0.66. The chart below compares the historical Sharpe Ratios of ANCFX and FSPGX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	ANCFX	FSPGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.16	0.66	+0.50
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.70	0.56	+0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.73	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.61	0.78	-0.17

Correlation

The correlation between ANCFX and FSPGX is 0.91, 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

ANCFX vs. FSPGX - Dividend Comparison

ANCFX's dividend yield for the trailing twelve months is around 9.11%, more than FSPGX's 0.40% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ANCFX American Funds Fundamental Investors Class A	9.11%	8.54%	8.90%	5.80%	4.98%	10.97%	2.61%	6.91%	9.31%	7.28%	4.71%	6.08%
FSPGX Fidelity Large Cap Growth Index Fund	0.40%	0.34%	0.37%	0.73%	0.86%	2.22%	1.76%	1.04%	1.32%	0.22%	0.00%	0.00%

Drawdowns

ANCFX vs. FSPGX - Drawdown Comparison

The maximum ANCFX drawdown since its inception was -53.29%, which is greater than FSPGX's maximum drawdown of -32.66%. Use the drawdown chart below to compare losses from any high point for ANCFX and FSPGX.

Drawdown Indicators

	ANCFX	FSPGX	Difference
Max Drawdown Largest peak-to-trough decline	-53.29%	-32.66%	-20.63%
Max Drawdown (1Y) Largest decline over 1 year	-11.35%	-16.17%	+4.82%
Max Drawdown (5Y) Largest decline over 5 years	-25.07%	-32.66%	+7.59%
Max Drawdown (10Y) Largest decline over 10 years	-33.93%	—	—
Current Drawdown Current decline from peak	-10.66%	-16.17%	+5.51%
Average Drawdown Average peak-to-trough decline	-7.34%	-6.43%	-0.91%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.54%	4.63%	-2.09%

Volatility

ANCFX vs. FSPGX - Volatility Comparison

The current volatility for American Funds Fundamental Investors Class A (ANCFX) is 4.98%, while Fidelity Large Cap Growth Index Fund (FSPGX) has a volatility of 5.33%. This indicates that ANCFX experiences smaller price fluctuations and is considered to be less risky than FSPGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ANCFX	FSPGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.98%	5.33%	-0.35%
Volatility (6M) Calculated over the trailing 6-month period	10.64%	11.79%	-1.15%
Volatility (1Y) Calculated over the trailing 1-year period	17.94%	22.32%	-4.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.67%	21.46%	-4.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.65%	21.63%	-3.98%