FHOFX vs. ACIHX

Last updated Jun 4, 2026

FHOFX (Fidelity Series Large Cap Growth Index Fund) and ACIHX (American Century Growth Fund G Class) are both Large Cap Growth Equities funds. Over the past 3 years, FHOFX returned 25.58%/yr vs 23.07%/yr for ACIHX. With a 0.99 correlation, they move nearly in lockstep. FHOFX charges 0.00%/yr vs 0.01%/yr for ACIHX.

Performance

FHOFX vs. ACIHX - Performance Comparison

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

Returns By Period

The year-to-date returns for both investments are quite close, with FHOFX having a 8.62% return and ACIHX slightly higher at 8.95%.

FHOFX

• 1D: -0.37%
• 1M: 7.11%
• YTD: 8.62%
• 6M: 7.98%
• 1Y: 27.46%
• 3Y*: 25.58%
• 5Y*: 16.09%
• 10Y*: —

ACIHX

• 1D: -0.51%
• 1M: 7.84%
• YTD: 8.95%
• 6M: 8.02%
• 1Y: 27.75%
• 3Y*: 23.07%
• 5Y*: —
• 10Y*: —

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

FHOFX vs. ACIHX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
FHOFX Fidelity Series Large Cap Growth Index Fund	8.62%	18.55%	33.37%	42.77%	-6.20%
ACIHX American Century Growth Fund G Class	8.95%	16.26%	27.35%	44.64%	-6.24%

Correlation

The correlation between FHOFX and ACIHX is 0.99 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.99
Correlation (3Y) Calculated over the trailing 3-year period	0.99
Correlation (All Time) Calculated using the full available price history since May 17, 2022	0.99

The correlation between FHOFX and ACIHX has been stable across timeframes, ranging from 0.99 to 0.99 - a consistent structural relationship.

Return for Risk

FHOFX vs. ACIHX — Risk / Return Rank

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

FHOFX

FHOFX Risk / Return Rank: 32
FHOFX Sharpe Ratio Rank: 40
FHOFX Sortino Ratio Rank: 36
FHOFX Omega Ratio Rank: 37
FHOFX Calmar Ratio Rank: 22
FHOFX Martin Ratio Rank: 23

ACIHX

ACIHX Risk / Return Rank: 31
ACIHX Sharpe Ratio Rank: 40
ACIHX Sortino Ratio Rank: 36
ACIHX Omega Ratio Rank: 36
ACIHX Calmar Ratio Rank: 22
ACIHX 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.

FHOFX vs. ACIHX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Series Large Cap Growth Index Fund (FHOFX) and American Century Growth Fund G Class (ACIHX). 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.

	FHOFX	ACIHX	Difference
Sharpe ratio Return per unit of total volatility	1.85	1.83	+0.02
Sortino ratio Return per unit of downside risk	2.50	2.48	+0.02
Omega ratio Gain probability vs. loss probability	1.32	1.32	0.00
Calmar ratio Return relative to maximum drawdown	1.76	1.75	+0.01
Martin ratio Return relative to average drawdown	5.92	5.88	+0.04
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FHOFX vs. ACIHX - Sharpe Ratio Comparison

The current FHOFX Sharpe Ratio is 1.85, which is comparable to the ACIHX Sharpe Ratio of 1.83. The chart below compares the historical Sharpe Ratios of FHOFX and ACIHX, 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

	FHOFX	ACIHX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.85	1.83	+0.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.75	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.77	1.02	-0.25

Drawdowns

FHOFX vs. ACIHX - Drawdown Comparison

The maximum FHOFX drawdown since its inception was -32.62%, which is greater than ACIHX's maximum drawdown of -24.00%. Use the drawdown chart below to compare losses from any high point for FHOFX and ACIHX.

Drawdown Indicators

	FHOFX	ACIHX	Difference
Max Drawdown Largest peak-to-trough decline	-32.62%	-24.00%	-8.62%
Max Drawdown (1Y) Largest decline over 1 year	-16.13%	-16.40%	+0.27%
Max Drawdown (3Y) Largest decline over 3 years	-23.31%	-24.00%	+0.69%
Max Drawdown (5Y) Largest decline over 5 years	-32.62%	—	—
Current Drawdown Current decline from peak	-0.37%	-0.51%	+0.14%
Average Drawdown Average peak-to-trough decline	-7.46%	-4.89%	-2.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.79%	4.87%	-0.08%

Volatility

FHOFX vs. ACIHX - Volatility Comparison

Fidelity Series Large Cap Growth Index Fund (FHOFX) and American Century Growth Fund G Class (ACIHX) have volatilities of 3.31% and 3.44%, 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

	FHOFX	ACIHX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.31%	3.44%	-0.13%
Volatility (6M) Calculated over the trailing 6-month period	11.59%	11.92%	-0.33%
Volatility (1Y) Calculated over the trailing 1-year period	15.40%	15.71%	-0.31%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.53%	21.05%	+0.48%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.14%	21.05%	+2.09%

FHOFX vs. ACIHX - Expense Ratio Comparison

FHOFX has a 0.00% expense ratio, which is lower than ACIHX's 0.01% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

FHOFX vs. ACIHX - Dividend Comparison

FHOFX's dividend yield for the trailing twelve months is around 0.90%, less than ACIHX's 14.64% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
ACIHX American Century Growth Fund G Class	14.64%	15.95%	5.65%	4.61%	2.86%	0.00%	0.00%	0.00%	0.00%
FHOFX Fidelity Series Large Cap Growth Index Fund	0.90%	0.97%	0.55%	0.83%	1.41%	3.02%	2.91%	1.30%	0.56%

Frequently Asked Questions

Can I hold both FHOFX and ACIHX in my portfolio?

With a correlation of 0.99, FHOFX and ACIHX 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, FHOFX or ACIHX?

ACIHX has higher volatility (3.44%) compared to FHOFX (3.31%). In terms of maximum drawdown, FHOFX dropped -32.62% vs ACIHX's -24.00%.

Which has better risk-adjusted returns?

FHOFX currently has the higher Sharpe Ratio (1.85 vs 1.83), 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.