FCLKX vs. VOO

Last updated Jun 4, 2026

FCLKX (Fidelity Large Cap Stock K6 Fund) and VOO (Vanguard S&P 500 ETF) are both funds - FCLKX is a Large Cap Value Equities fund managed by Fidelity, while VOO is a S&P 500 fund tracking the S&P 500 Index. Over the past 5 years, FCLKX returned 16.31%/yr vs 13.90%/yr for VOO. Their correlation of 0.91 suggests significant overlap in exposure. FCLKX charges 0.45%/yr vs 0.03%/yr for VOO.

Performance

FCLKX vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Large Cap Stock K6 Fund (FCLKX) and Vanguard S&P 500 ETF (VOO). 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 lower than VOO's 10.91% return.

FCLKX

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

VOO

• 1D: -0.70%
• 1M: 5.04%
• YTD: 10.91%
• 6M: 10.93%
• 1Y: 28.04%
• 3Y*: 22.44%
• 5Y*: 13.90%
• 10Y*: 15.56%

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

FCLKX vs. VOO - 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%
VOO Vanguard S&P 500 ETF	10.91%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	12.14%

Correlation

The correlation between FCLKX and VOO is 0.93, 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	0.93
Correlation (3Y) Calculated over the trailing 3-year period	0.93
Correlation (5Y) Calculated over the trailing 5-year period	0.92
Correlation (All Time) Calculated using the full available price history since May 26, 2017	0.91

The correlation between FCLKX and VOO has been stable across timeframes, ranging from 0.91 to 0.93 - a consistent structural relationship.

Return for Risk

FCLKX vs. VOO — 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

VOO

VOO Risk / Return Rank: 70
VOO Sharpe Ratio Rank: 71
VOO Sortino Ratio Rank: 70
VOO Omega Ratio Rank: 70
VOO Calmar Ratio Rank: 62
VOO Martin Ratio Rank: 75

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. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Large Cap Stock K6 Fund (FCLKX) and Vanguard S&P 500 ETF (VOO). 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	VOO	Difference
Sharpe ratio: Return per unit of total volatility	2.63	2.39	+0.24
Sortino ratio: Return per unit of downside risk	3.63	3.25	+0.37
Omega ratio: Gain probability vs. loss probability	1.48	1.43	+0.05
Calmar ratio: Return relative to maximum drawdown	3.35	3.16	+0.19
Martin ratio: Return relative to average drawdown	15.51	14.73	+0.78
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. VOO - Sharpe Ratio Comparison

The current FCLKX Sharpe Ratio is 2.63, which is comparable to the VOO Sharpe Ratio of 2.39. The chart below compares the historical Sharpe Ratios of FCLKX and VOO, 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	VOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.63	2.39	+0.24
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.98	0.83	+0.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.87	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.83	0.89	-0.06

Drawdowns

FCLKX vs. VOO - Drawdown Comparison

The maximum FCLKX drawdown since its inception was -37.09%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for FCLKX and VOO.

Drawdown Indicators

	FCLKX	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-37.09%	-33.99%	-3.10%
Max Drawdown (1Y) Largest decline over 1 year	-9.42%	-8.90%	-0.52%
Max Drawdown (3Y) Largest decline over 3 years	-19.09%	-18.69%	-0.40%
Max Drawdown (5Y) Largest decline over 5 years	-22.16%	-24.52%	+2.36%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.99%	—
Current Drawdown Current decline from peak	-0.24%	-0.70%	+0.46%
Average Drawdown Average peak-to-trough decline	-4.46%	-3.69%	-0.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.03%	1.91%	+0.12%

Volatility

FCLKX vs. VOO - Volatility Comparison

Fidelity Large Cap Stock K6 Fund (FCLKX) and Vanguard S&P 500 ETF (VOO) have volatilities of 2.87% and 2.84%, 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

	FCLKX	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.87%	2.84%	+0.03%
Volatility (6M) Calculated over the trailing 6-month period	9.26%	8.90%	+0.36%
Volatility (1Y) Calculated over the trailing 1-year period	12.02%	11.80%	+0.22%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.82%	16.81%	+0.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.16%	18.01%	+1.15%

FCLKX vs. VOO - Expense Ratio Comparison

FCLKX has a 0.45% expense ratio, which is higher than VOO's 0.03% expense ratio.

Dividends

FCLKX vs. VOO - Dividend Comparison

FCLKX's dividend yield for the trailing twelve months is around 4.14%, more than VOO's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%
VOO Vanguard S&P 500 ETF	1.03%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both FCLKX and VOO in my portfolio?

With a correlation of 0.93, FCLKX and VOO 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, FCLKX or VOO?

FCLKX has higher volatility (2.87%) compared to VOO (2.84%). In terms of maximum drawdown, FCLKX dropped -37.09% vs VOO's -33.99%.

Which has better risk-adjusted returns?

FCLKX currently has the higher Sharpe Ratio (2.63 vs 2.39), 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.