FDEKX vs. VPMCX

Last updated Jun 4, 2026

FDEKX (Fidelity Disciplined Equity Fund Class K) and VPMCX (Vanguard PRIMECAP Fund Investor Shares) are both Large Cap Growth Equities funds. Over the past 10 years, FDEKX returned 14.90%/yr vs 17.57%/yr for VPMCX. Their correlation of 0.92 suggests significant overlap in exposure. FDEKX charges 0.70%/yr vs 0.38%/yr for VPMCX.

Performance

FDEKX vs. VPMCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Disciplined Equity Fund Class K (FDEKX) and Vanguard PRIMECAP Fund Investor Shares (VPMCX). 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 lower than VPMCX's 25.40% return. Over the past 10 years, FDEKX has underperformed VPMCX with an annualized return of 14.90%, while VPMCX has yielded a comparatively higher 17.57% annualized 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%

VPMCX

• 1D: 0.35%
• 1M: 12.86%
• YTD: 25.40%
• 6M: 26.79%
• 1Y: 58.79%
• 3Y*: 28.00%
• 5Y*: 16.44%
• 10Y*: 17.57%

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

FDEKX vs. VPMCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
FDEKX Fidelity Disciplined Equity Fund Class K	14.53%	16.51%	25.10%	34.18%	-27.99%	27.71%	29.93%	32.07%	-10.27%	20.15%
VPMCX Vanguard PRIMECAP Fund Investor Shares	25.40%	29.60%	13.23%	28.16%	-15.22%	21.64%	17.16%	27.78%	-1.99%	28.17%

Correlation

The correlation between FDEKX and VPMCX is 0.82, 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	0.82
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.89
Correlation (All Time) Calculated using the full available price history since May 16, 2008	0.92

The correlation between FDEKX and VPMCX has been stable across timeframes, ranging from 0.82 to 0.92 - a consistent structural relationship.

Return for Risk

FDEKX vs. VPMCX — 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

VPMCX

VPMCX Risk / Return Rank: 94
VPMCX Sharpe Ratio Rank: 97
VPMCX Sortino Ratio Rank: 95
VPMCX Omega Ratio Rank: 91
VPMCX Calmar Ratio Rank: 93
VPMCX Martin Ratio Rank: 96

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. VPMCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Disciplined Equity Fund Class K (FDEKX) and Vanguard PRIMECAP Fund Investor Shares (VPMCX). 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	VPMCX	Difference
Sharpe ratio: Return per unit of total volatility	2.01	3.75	-1.74
Sortino ratio: Return per unit of downside risk	2.74	5.04	-2.31
Omega ratio: Gain probability vs. loss probability	1.35	1.65	-0.30
Calmar ratio: Return relative to maximum drawdown	2.53	5.12	-2.59
Martin ratio: Return relative to average drawdown	10.90	23.59	-12.69
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. VPMCX - Sharpe Ratio Comparison

The current FDEKX Sharpe Ratio is 2.01, which is lower than the VPMCX Sharpe Ratio of 3.75. The chart below compares the historical Sharpe Ratios of FDEKX and VPMCX, 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	VPMCX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.01	3.75	-1.74
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.68	0.91	-0.22
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.75	0.92	-0.17
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.81	-0.32

Drawdowns

FDEKX vs. VPMCX - Drawdown Comparison

The maximum FDEKX drawdown since its inception was -51.34%, roughly equal to the maximum VPMCX drawdown of -50.45%. Use the drawdown chart below to compare losses from any high point for FDEKX and VPMCX.

Drawdown Indicators

	FDEKX	VPMCX	Difference
Max Drawdown Largest peak-to-trough decline	-51.34%	-50.45%	-0.89%
Max Drawdown (1Y) Largest decline over 1 year	-12.48%	-11.73%	-0.75%
Max Drawdown (3Y) Largest decline over 3 years	-22.29%	-20.56%	-1.73%
Max Drawdown (5Y) Largest decline over 5 years	-32.85%	-25.25%	-7.60%
Max Drawdown (10Y) Largest decline over 10 years	-32.85%	-32.65%	-0.20%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-9.65%	-7.41%	-2.24%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.89%	2.54%	+0.35%

Volatility

FDEKX vs. VPMCX - Volatility Comparison

The current volatility for Fidelity Disciplined Equity Fund Class K (FDEKX) is 4.37%, while Vanguard PRIMECAP Fund Investor Shares (VPMCX) has a volatility of 6.18%. This indicates that FDEKX experiences smaller price fluctuations and is considered to be less risky than VPMCX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	FDEKX	VPMCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.37%	6.18%	-1.81%
Volatility (6M) Calculated over the trailing 6-month period	12.41%	12.85%	-0.44%
Volatility (1Y) Calculated over the trailing 1-year period	15.77%	16.02%	-0.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.03%	18.26%	+1.77%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.02%	19.19%	+0.83%

FDEKX vs. VPMCX - Expense Ratio Comparison

FDEKX has a 0.70% expense ratio, which is higher than VPMCX's 0.38% expense ratio.

Dividends

FDEKX vs. VPMCX - Dividend Comparison

FDEKX's dividend yield for the trailing twelve months is around 7.03%, less than VPMCX's 13.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%
VPMCX Vanguard PRIMECAP Fund Investor Shares	13.04%	16.36%	6.62%	7.16%	9.85%	10.08%	9.74%	7.15%	8.32%	4.53%	5.05%	5.91%

Frequently Asked Questions

Can I hold both FDEKX and VPMCX in my portfolio?

FDEKX and VPMCX have a correlation of 0.82, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FDEKX or VPMCX?

VPMCX has higher volatility (6.18%) compared to FDEKX (4.37%). In terms of maximum drawdown, FDEKX dropped -51.34% vs VPMCX's -50.45%.

Which has better risk-adjusted returns?

VPMCX currently has the higher Sharpe Ratio (3.75 vs 2.01), 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.