FDEKX vs. ACIHX

Last updated Jun 4, 2026

FDEKX (Fidelity Disciplined Equity Fund Class K) and ACIHX (American Century Growth Fund G Class) are both Large Cap Growth Equities funds. Over the past 3 years, FDEKX returned 24.36%/yr vs 23.07%/yr for ACIHX. With a 0.96 correlation, they move nearly in lockstep. FDEKX charges 0.70%/yr vs 0.01%/yr for ACIHX.

Performance

FDEKX vs. ACIHX - Performance Comparison

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

Returns By Period

In the year-to-date period, FDEKX achieves a 14.53% return, which is significantly higher than ACIHX's 8.95% return.

FDEKX

• 1D: 0.19%
• 1M: 6.44%
• YTD: 14.53%
• 6M: 14.29%
• 1Y: 30.48%
• 3Y*: 24.36%
• 5Y*: 13.63%
• 10Y*: 14.90%

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)

FDEKX vs. ACIHX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
FDEKX Fidelity Disciplined Equity Fund Class K	14.53%	16.51%	25.10%	34.18%	-5.27%
ACIHX American Century Growth Fund G Class	8.95%	16.26%	27.35%	44.64%	-6.24%

Correlation

The correlation between FDEKX and ACIHX is 0.91, 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	0.91
Correlation (3Y) Calculated over the trailing 3-year period	0.94
Correlation (All Time) Calculated using the full available price history since May 17, 2022	0.96

The correlation between FDEKX and ACIHX has been stable across timeframes, ranging from 0.91 to 0.96 - a consistent structural relationship.

Return for Risk

FDEKX vs. ACIHX — Risk / Return Rank

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

FDEKX

FDEKX Risk / Return Rank: 45
FDEKX Sharpe Ratio Rank: 46
FDEKX Sortino Ratio Rank: 42
FDEKX Omega Ratio Rank: 42
FDEKX Calmar Ratio Rank: 44
FDEKX Martin Ratio Rank: 53

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.

FDEKX vs. ACIHX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Disciplined Equity Fund Class K (FDEKX) 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.

	FDEKX	ACIHX	Difference
Sharpe ratio: Return per unit of total volatility	2.01	1.83	+0.18
Sortino ratio: Return per unit of downside risk	2.74	2.48	+0.25
Omega ratio: Gain probability vs. loss probability	1.35	1.32	+0.03
Calmar ratio: Return relative to maximum drawdown	2.53	1.75	+0.78
Martin ratio: Return relative to average drawdown	10.90	5.88	+5.02
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FDEKX vs. ACIHX - Sharpe Ratio Comparison

The current FDEKX Sharpe Ratio is 2.01, which is comparable to the ACIHX Sharpe Ratio of 1.83. The chart below compares the historical Sharpe Ratios of FDEKX 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

	FDEKX	ACIHX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.01	1.83	+0.18
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.68	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.75	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	1.02	-0.54

Drawdowns

FDEKX vs. ACIHX - Drawdown Comparison

The maximum FDEKX drawdown since its inception was -51.34%, which is greater than ACIHX's maximum drawdown of -24.00%. Use the drawdown chart below to compare losses from any high point for FDEKX and ACIHX.

Drawdown Indicators

	FDEKX	ACIHX	Difference
Max Drawdown Largest peak-to-trough decline	-51.34%	-24.00%	-27.34%
Max Drawdown (1Y) Largest decline over 1 year	-12.48%	-16.40%	+3.92%
Max Drawdown (3Y) Largest decline over 3 years	-22.29%	-24.00%	+1.71%
Max Drawdown (5Y) Largest decline over 5 years	-32.85%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-32.85%	—	—
Current Drawdown Current decline from peak	0.00%	-0.51%	+0.51%
Average Drawdown Average peak-to-trough decline	-9.65%	-4.89%	-4.76%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.89%	4.87%	-1.98%

Volatility

FDEKX vs. ACIHX - Volatility Comparison

Fidelity Disciplined Equity Fund Class K (FDEKX) has a higher volatility of 4.37% compared to American Century Growth Fund G Class (ACIHX) at 3.44%. This indicates that FDEKX's price experiences larger fluctuations and is considered to be riskier than ACIHX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FDEKX	ACIHX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.37%	3.44%	+0.93%
Volatility (6M) Calculated over the trailing 6-month period	12.41%	11.92%	+0.49%
Volatility (1Y) Calculated over the trailing 1-year period	15.77%	15.71%	+0.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.03%	21.05%	-1.02%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.02%	21.05%	-1.03%

FDEKX vs. ACIHX - Expense Ratio Comparison

FDEKX has a 0.70% expense ratio, which is higher than ACIHX's 0.01% expense ratio.

Dividends

FDEKX vs. ACIHX - Dividend Comparison

FDEKX's dividend yield for the trailing twelve months is around 7.03%, less than ACIHX's 14.64% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%	0.00%	0.00%	0.00%
FDEKX Fidelity Disciplined Equity Fund Class K	7.03%	8.06%	9.31%	4.64%	3.00%	1.43%	0.04%	0.62%	15.44%	2.90%	1.57%	5.20%

Frequently Asked Questions

Can I hold both FDEKX and ACIHX in my portfolio?

With a correlation of 0.91, FDEKX 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, FDEKX or ACIHX?

FDEKX has higher volatility (4.37%) compared to ACIHX (3.44%). In terms of maximum drawdown, FDEKX dropped -51.34% vs ACIHX's -24.00%.

Which has better risk-adjusted returns?

FDEKX currently has the higher Sharpe Ratio (2.01 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.