AMRGX vs. FSPGX

Last updated Apr 1, 2026

Compare and contrast key facts about American Growth Fund Series One (AMRGX) and Fidelity Large Cap Growth Index Fund (FSPGX).

AMRGX is managed by American Growth. It was launched on Jul 31, 1958. FSPGX is managed by Fidelity.

Performance

AMRGX vs. FSPGX - Performance Comparison

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

AMRGX vs. FSPGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AMRGX American Growth Fund Series One	-1.31%	11.18%	16.61%	24.38%	-19.93%	15.64%	18.65%	36.73%	-9.07%	12.68%
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, AMRGX achieves a -1.31% return, which is significantly higher than FSPGX's -13.03% return.

AMRGX

• 1D: -1.60%
• 1M: -10.92%
• YTD: -1.31%
• 6M: 7.51%
• 1Y: 16.26%
• 3Y*: 14.01%
• 5Y*: 7.34%
• 10Y*: 10.41%

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)

AMRGX vs. FSPGX - Expense Ratio Comparison

AMRGX has a 4.07% expense ratio, which is higher than FSPGX's 0.04% expense ratio.

AMRGX

American Growth Fund Series One

FSPGX

Fidelity Large Cap Growth Index Fund

Return for Risk

AMRGX vs. FSPGX — Risk / Return Rank

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

AMRGX

AMRGX Risk / Return Rank: 32
AMRGX Sharpe Ratio Rank: 26
AMRGX Sortino Ratio Rank: 33
AMRGX Omega Ratio Rank: 45
AMRGX Calmar Ratio Rank: 37
AMRGX Martin Ratio Rank: 22

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.

AMRGX vs. FSPGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Growth Fund Series One (AMRGX) 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.

	AMRGX	FSPGX	Difference
Sharpe ratio Return per unit of total volatility	0.62	0.66	-0.04
Sortino ratio Return per unit of downside risk	1.12	1.10	+0.02
Omega ratio Gain probability vs. loss probability	1.19	1.15	+0.04
Calmar ratio Return relative to maximum drawdown	0.99	0.72	+0.27
Martin ratio Return relative to average drawdown	2.37	2.51	-0.14
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AMRGX vs. FSPGX - Sharpe Ratio Comparison

The current AMRGX Sharpe Ratio is 0.62, which is comparable to the FSPGX Sharpe Ratio of 0.66. The chart below compares the historical Sharpe Ratios of AMRGX 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

	AMRGX	FSPGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.62	0.66	-0.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.34	0.56	-0.22
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.49	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.10	0.78	-0.68

Correlation

The correlation between AMRGX and FSPGX is 0.85, 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

AMRGX vs. FSPGX - Dividend Comparison

AMRGX's dividend yield for the trailing twelve months is around 18.06%, more than FSPGX's 0.40% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
AMRGX American Growth Fund Series One	18.06%	17.82%	12.39%	8.17%	7.77%	12.21%	2.36%	0.00%	0.00%	0.00%
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%

Drawdowns

AMRGX vs. FSPGX - Drawdown Comparison

The maximum AMRGX drawdown since its inception was -80.32%, which is greater than FSPGX's maximum drawdown of -32.66%. Use the drawdown chart below to compare losses from any high point for AMRGX and FSPGX.

Drawdown Indicators

	AMRGX	FSPGX	Difference
Max Drawdown Largest peak-to-trough decline	-80.32%	-32.66%	-47.66%
Max Drawdown (1Y) Largest decline over 1 year	-13.98%	-16.17%	+2.19%
Max Drawdown (5Y) Largest decline over 5 years	-35.42%	-32.66%	-2.76%
Max Drawdown (10Y) Largest decline over 10 years	-35.42%	—	—
Current Drawdown Current decline from peak	-13.98%	-16.17%	+2.19%
Average Drawdown Average peak-to-trough decline	-40.45%	-6.43%	-34.02%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.82%	4.63%	+1.19%

Volatility

AMRGX vs. FSPGX - Volatility Comparison

American Growth Fund Series One (AMRGX) has a higher volatility of 6.18% compared to Fidelity Large Cap Growth Index Fund (FSPGX) at 5.33%. This indicates that AMRGX's price experiences larger fluctuations and is considered to be riskier than FSPGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AMRGX	FSPGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.18%	5.33%	+0.85%
Volatility (6M) Calculated over the trailing 6-month period	23.49%	11.79%	+11.70%
Volatility (1Y) Calculated over the trailing 1-year period	28.26%	22.32%	+5.94%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.84%	21.46%	+0.38%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.30%	21.63%	-0.33%