HACAX vs. ACIHX

Last updated Apr 1, 2026

Compare and contrast key facts about Harbor Capital Appreciation Fund Class I (HACAX) and American Century Growth Fund G Class (ACIHX).

HACAX is managed by Harbor. It was launched on Dec 29, 1987. ACIHX is an actively managed fund by American Century. It was launched on Mar 1, 2022.

Performance

HACAX vs. ACIHX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Harbor Capital Appreciation Fund Class I (HACAX) and American Century Growth Fund G Class (ACIHX). The values are adjusted to include any dividend payments, if applicable.

HACAX vs. ACIHX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
HACAX Harbor Capital Appreciation Fund Class I	-14.13%	13.95%	46.37%	53.74%	-8.50%
ACIHX American Century Growth Fund G Class	-13.30%	16.26%	27.35%	44.64%	-6.24%

Returns By Period

In the year-to-date period, HACAX achieves a -14.13% return, which is significantly lower than ACIHX's -13.30% return.

HACAX

• 1D: -0.40%
• 1M: -8.90%
• YTD: -14.13%
• 6M: -13.44%
• 1Y: 8.81%
• 3Y*: 23.01%
• 5Y*: 10.36%
• 10Y*: 16.39%

ACIHX

• 1D: -0.39%
• 1M: -8.72%
• YTD: -13.30%
• 6M: -12.27%
• 1Y: 13.26%
• 3Y*: 17.20%
• 5Y*: —
• 10Y*: —

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

HACAX vs. ACIHX - Expense Ratio Comparison

HACAX has a 0.71% expense ratio, which is higher than ACIHX's 0.01% expense ratio.

HACAX

Harbor Capital Appreciation Fund Class I

ACIHX

American Century Growth Fund G Class

Return for Risk

HACAX vs. ACIHX — Risk / Return Rank

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

HACAX

HACAX Risk / Return Rank: 15
HACAX Sharpe Ratio Rank: 17
HACAX Sortino Ratio Rank: 17
HACAX Omega Ratio Rank: 17
HACAX Calmar Ratio Rank: 12
HACAX Martin Ratio Rank: 12

ACIHX

ACIHX Risk / Return Rank: 23
ACIHX Sharpe Ratio Rank: 23
ACIHX Sortino Ratio Rank: 27
ACIHX Omega Ratio Rank: 25
ACIHX Calmar Ratio Rank: 21
ACIHX Martin Ratio Rank: 21

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.

HACAX vs. ACIHX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Harbor Capital Appreciation Fund Class I (HACAX) 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.

	HACAX	ACIHX	Difference
Sharpe ratio Return per unit of total volatility	0.43	0.59	-0.16
Sortino ratio Return per unit of downside risk	0.71	1.02	-0.30
Omega ratio Gain probability vs. loss probability	1.10	1.14	-0.04
Calmar ratio Return relative to maximum drawdown	0.32	0.63	-0.31
Martin ratio Return relative to average drawdown	1.07	2.21	-1.15
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

HACAX vs. ACIHX - Sharpe Ratio Comparison

The current HACAX Sharpe Ratio is 0.43, which is comparable to the ACIHX Sharpe Ratio of 0.59. The chart below compares the historical Sharpe Ratios of HACAX and ACIHX, 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

	HACAX	ACIHX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.43	0.59	-0.16
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.40	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.68	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.59	0.73	-0.15

Correlation

The correlation between HACAX and ACIHX is 0.97, 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

HACAX vs. ACIHX - Dividend Comparison

HACAX's dividend yield for the trailing twelve months is around 13.10%, less than ACIHX's 18.39% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
HACAX Harbor Capital Appreciation Fund Class I	13.10%	11.25%	21.75%	0.00%	0.00%	18.64%	12.25%	8.88%	10.97%	11.56%	6.26%	6.83%
ACIHX American Century Growth Fund G Class	18.39%	15.95%	5.65%	4.61%	2.86%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Drawdowns

HACAX vs. ACIHX - Drawdown Comparison

The maximum HACAX drawdown since its inception was -63.05%, which is greater than ACIHX's maximum drawdown of -24.00%. Use the drawdown chart below to compare losses from any high point for HACAX and ACIHX.

Drawdown Indicators

	HACAX	ACIHX	Difference
Max Drawdown Largest peak-to-trough decline	-63.05%	-24.00%	-39.05%
Max Drawdown (1Y) Largest decline over 1 year	-17.96%	-16.40%	-1.56%
Max Drawdown (5Y) Largest decline over 5 years	-43.52%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-43.52%	—	—
Current Drawdown Current decline from peak	-17.96%	-16.40%	-1.56%
Average Drawdown Average peak-to-trough decline	-16.27%	-4.95%	-11.32%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.36%	4.68%	+0.68%

Volatility

HACAX vs. ACIHX - Volatility Comparison

Harbor Capital Appreciation Fund Class I (HACAX) and American Century Growth Fund G Class (ACIHX) have volatilities of 5.67% and 5.43%, 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

	HACAX	ACIHX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.67%	5.43%	+0.24%
Volatility (6M) Calculated over the trailing 6-month period	12.59%	12.03%	+0.56%
Volatility (1Y) Calculated over the trailing 1-year period	20.13%	22.42%	-2.29%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.89%	21.21%	+4.68%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.31%	21.21%	+3.10%