FOKFX vs. VPMCX

Last updated Jun 4, 2026

FOKFX (Fidelity OTC K6 Portfolio) and VPMCX (Vanguard PRIMECAP Fund Investor Shares) are both Large Cap Growth Equities funds. Over the past 5 years, FOKFX returned 18.58%/yr vs 16.44%/yr for VPMCX. Their correlation of 0.86 suggests significant overlap in exposure. FOKFX charges 0.50%/yr vs 0.38%/yr for VPMCX.

Performance

FOKFX vs. VPMCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity OTC K6 Portfolio (FOKFX) 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, FOKFX achieves a 28.00% return, which is significantly higher than VPMCX's 25.40% return.

FOKFX

• 1D: 0.90%
• 1M: 11.67%
• YTD: 28.00%
• 6M: 26.89%
• 1Y: 59.16%
• 3Y*: 32.88%
• 5Y*: 18.58%
• 10Y*: —

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)

FOKFX vs. VPMCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
FOKFX Fidelity OTC K6 Portfolio	28.00%	20.30%	34.58%	43.48%	-32.32%	25.95%	47.52%	17.08%
VPMCX Vanguard PRIMECAP Fund Investor Shares	25.40%	29.60%	13.23%	28.16%	-15.22%	21.64%	17.16%	15.35%

Correlation

The correlation between FOKFX and VPMCX is 0.77, 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	0.77
Correlation (3Y) Calculated over the trailing 3-year period	0.80
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (All Time) Calculated using the full available price history since Jun 14, 2019	0.86

The correlation between FOKFX and VPMCX has been stable across timeframes, ranging from 0.77 to 0.86 - a consistent structural relationship.

Return for Risk

FOKFX vs. VPMCX — Risk / Return Rank

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

FOKFX

FOKFX Risk / Return Rank: 89
FOKFX Sharpe Ratio Rank: 94
FOKFX Sortino Ratio Rank: 86
FOKFX Omega Ratio Rank: 82
FOKFX Calmar Ratio Rank: 91
FOKFX Martin Ratio Rank: 93

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.

FOKFX vs. VPMCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity OTC K6 Portfolio (FOKFX) 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.

	FOKFX	VPMCX	Difference
Sharpe ratio: Return per unit of total volatility	3.27	3.75	-0.47
Sortino ratio: Return per unit of downside risk	4.07	5.04	-0.97
Omega ratio: Gain probability vs. loss probability	1.54	1.65	-0.11
Calmar ratio: Return relative to maximum drawdown	4.82	5.12	-0.30
Martin ratio: Return relative to average drawdown	19.97	23.59	-3.62
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FOKFX vs. VPMCX - Sharpe Ratio Comparison

The current FOKFX Sharpe Ratio is 3.27, which is comparable to the VPMCX Sharpe Ratio of 3.75. The chart below compares the historical Sharpe Ratios of FOKFX 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

	FOKFX	VPMCX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.27	3.75	-0.47
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.81	0.91	-0.09
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.92	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.96	0.81	+0.16

Drawdowns

FOKFX vs. VPMCX - Drawdown Comparison

The maximum FOKFX drawdown since its inception was -37.26%, smaller than the maximum VPMCX drawdown of -50.45%. Use the drawdown chart below to compare losses from any high point for FOKFX and VPMCX.

Drawdown Indicators

	FOKFX	VPMCX	Difference
Max Drawdown Largest peak-to-trough decline	-37.26%	-50.45%	+13.19%
Max Drawdown (1Y) Largest decline over 1 year	-12.53%	-11.73%	-0.80%
Max Drawdown (3Y) Largest decline over 3 years	-24.81%	-20.56%	-4.25%
Max Drawdown (5Y) Largest decline over 5 years	-37.26%	-25.25%	-12.01%
Max Drawdown (10Y) Largest decline over 10 years	—	-32.65%	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-9.20%	-7.41%	-1.79%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.01%	2.54%	+0.47%

Volatility

FOKFX vs. VPMCX - Volatility Comparison

The current volatility for Fidelity OTC K6 Portfolio (FOKFX) is 5.62%, while Vanguard PRIMECAP Fund Investor Shares (VPMCX) has a volatility of 6.18%. This indicates that FOKFX 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

	FOKFX	VPMCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.62%	6.18%	-0.56%
Volatility (6M) Calculated over the trailing 6-month period	14.55%	12.85%	+1.70%
Volatility (1Y) Calculated over the trailing 1-year period	18.45%	16.02%	+2.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.01%	18.26%	+4.75%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.63%	19.19%	+5.44%

FOKFX vs. VPMCX - Expense Ratio Comparison

FOKFX has a 0.50% expense ratio, which is higher than VPMCX's 0.38% expense ratio.

Dividends

FOKFX vs. VPMCX - Dividend Comparison

FOKFX's dividend yield for the trailing twelve months is around 3.28%, less than VPMCX's 13.04% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FOKFX Fidelity OTC K6 Portfolio	3.28%	4.20%	4.58%	0.24%	0.08%	3.81%	0.39%	0.32%	0.00%	0.00%	0.00%	0.00%
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 FOKFX and VPMCX in my portfolio?

FOKFX and VPMCX have a correlation of 0.77, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FOKFX or VPMCX?

VPMCX has higher volatility (6.18%) compared to FOKFX (5.62%). In terms of maximum drawdown, FOKFX dropped -37.26% vs VPMCX's -50.45%.

Which has better risk-adjusted returns?

VPMCX currently has the higher Sharpe Ratio (3.75 vs 3.27), 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.