FCLKX vs. ACIIX

Last updated Jun 4, 2026

FCLKX (Fidelity Large Cap Stock K6 Fund) and ACIIX (American Century Equity Income Fund Class I) are both Large Cap Value Equities funds. Over the past 5 years, FCLKX returned 16.31%/yr vs 7.10%/yr for ACIIX. A 0.79 correlation means they provide meaningful diversification when combined. FCLKX charges 0.45%/yr vs 0.72%/yr for ACIIX.

Performance

FCLKX vs. ACIIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Large Cap Stock K6 Fund (FCLKX) and American Century Equity Income Fund Class I (ACIIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, FCLKX achieves a 9.79% return, which is significantly higher than ACIIX's 6.29% return.

FCLKX

• 1D: -0.24%
• 1M: 3.27%
• YTD: 9.79%
• 6M: 11.67%
• 1Y: 30.58%
• 3Y*: 25.49%
• 5Y*: 16.31%
• 10Y*: —

ACIIX

• 1D: 0.56%
• 1M: 0.11%
• YTD: 6.29%
• 6M: 6.70%
• 1Y: 15.45%
• 3Y*: 10.83%
• 5Y*: 7.10%
• 10Y*: 8.88%

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

FCLKX vs. ACIIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FCLKX Fidelity Large Cap Stock K6 Fund	9.79%	27.34%	26.36%	23.93%	-6.79%	25.71%	9.15%	31.46%	-9.00%	11.97%
ACIIX American Century Equity Income Fund Class I	6.29%	12.05%	10.58%	4.25%	-2.96%	17.16%	1.19%	24.50%	-3.53%	8.05%

Correlation

The correlation between FCLKX and ACIIX is 0.50, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.50
Correlation (3Y) Calculated over the trailing 3-year period	0.57
Correlation (5Y) Calculated over the trailing 5-year period	0.72
Correlation (All Time) Calculated using the full available price history since May 26, 2017	0.79

Over the past year, the correlation between FCLKX and ACIIX has dropped to 0.50 - well below their long-term average of 0.79, suggesting their price drivers have been diverging.

Return for Risk

FCLKX vs. ACIIX — Risk / Return Rank

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

FCLKX

FCLKX Risk / Return Rank: 77
FCLKX Sharpe Ratio Rank: 81
FCLKX Sortino Ratio Rank: 76
FCLKX Omega Ratio Rank: 73
FCLKX Calmar Ratio Rank: 73
FCLKX Martin Ratio Rank: 82

ACIIX

ACIIX Risk / Return Rank: 42
ACIIX Sharpe Ratio Rank: 42
ACIIX Sortino Ratio Rank: 46
ACIIX Omega Ratio Rank: 39
ACIIX Calmar Ratio Rank: 43
ACIIX Martin Ratio Rank: 37

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.

FCLKX vs. ACIIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Large Cap Stock K6 Fund (FCLKX) and American Century Equity Income Fund Class I (ACIIX). 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.

	FCLKX	ACIIX	Difference
Sharpe ratio: Return per unit of total volatility	2.63	1.90	+0.73
Sortino ratio: Return per unit of downside risk	3.63	2.85	+0.78
Omega ratio: Gain probability vs. loss probability	1.48	1.33	+0.15
Calmar ratio: Return relative to maximum drawdown	3.35	2.50	+0.86
Martin ratio: Return relative to average drawdown	15.51	8.21	+7.30
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FCLKX vs. ACIIX - Sharpe Ratio Comparison

The current FCLKX Sharpe Ratio is 2.63, which is higher than the ACIIX Sharpe Ratio of 1.90. The chart below compares the historical Sharpe Ratios of FCLKX and ACIIX, 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

	FCLKX	ACIIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.63	1.90	+0.73
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.98	0.66	+0.31
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.67	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.83	0.54	+0.29

Drawdowns

FCLKX vs. ACIIX - Drawdown Comparison

The maximum FCLKX drawdown since its inception was -37.09%, smaller than the maximum ACIIX drawdown of -39.16%. Use the drawdown chart below to compare losses from any high point for FCLKX and ACIIX.

Drawdown Indicators

	FCLKX	ACIIX	Difference
Max Drawdown Largest peak-to-trough decline	-37.09%	-39.16%	+2.07%
Max Drawdown (1Y) Largest decline over 1 year	-9.42%	-6.38%	-3.04%
Max Drawdown (3Y) Largest decline over 3 years	-19.09%	-10.15%	-8.94%
Max Drawdown (5Y) Largest decline over 5 years	-22.16%	-13.49%	-8.67%
Max Drawdown (10Y) Largest decline over 10 years	—	-32.76%	—
Current Drawdown Current decline from peak	-0.24%	-2.46%	+2.22%
Average Drawdown Average peak-to-trough decline	-4.46%	-5.24%	+0.78%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.03%	1.94%	+0.09%

Volatility

FCLKX vs. ACIIX - Volatility Comparison

Fidelity Large Cap Stock K6 Fund (FCLKX) has a higher volatility of 2.87% compared to American Century Equity Income Fund Class I (ACIIX) at 2.19%. This indicates that FCLKX's price experiences larger fluctuations and is considered to be riskier than ACIIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FCLKX	ACIIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.87%	2.19%	+0.68%
Volatility (6M) Calculated over the trailing 6-month period	9.26%	6.11%	+3.15%
Volatility (1Y) Calculated over the trailing 1-year period	12.02%	8.37%	+3.65%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.82%	10.76%	+6.06%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.16%	13.38%	+5.78%

FCLKX vs. ACIIX - Expense Ratio Comparison

FCLKX has a 0.45% expense ratio, which is lower than ACIIX's 0.72% expense ratio.

Dividends

FCLKX vs. ACIIX - Dividend Comparison

FCLKX's dividend yield for the trailing twelve months is around 4.14%, less than ACIIX's 9.94% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ACIIX American Century Equity Income Fund Class I	9.94%	10.55%	11.71%	8.21%	8.96%	7.02%	2.18%	7.57%	9.05%	12.14%	8.08%	10.72%
FCLKX Fidelity Large Cap Stock K6 Fund	4.14%	4.55%	4.65%	3.07%	35.30%	6.51%	3.43%	2.52%	4.11%	0.58%	0.00%	0.00%

Frequently Asked Questions

Can I hold both FCLKX and ACIIX in my portfolio?

FCLKX and ACIIX have a correlation of 0.50, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FCLKX or ACIIX?

FCLKX has higher volatility (2.87%) compared to ACIIX (2.19%). In terms of maximum drawdown, FCLKX dropped -37.09% vs ACIIX's -39.16%.

Which has better risk-adjusted returns?

FCLKX currently has the higher Sharpe Ratio (2.63 vs 1.90), 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.