VEXAX vs. FPKFX

Last updated Jun 13, 2026

VEXAX (Vanguard Extended Market Index Fund Admiral Shares) and FPKFX (Fidelity Puritan K6 Fund) are both mutual funds - VEXAX is a Mid Cap Blend Equities fund managed by Vanguard, while FPKFX is a Diversified Portfolio fund managed by Fidelity. Over the past 5 years, VEXAX returned 6.06%/yr vs 9.04%/yr for FPKFX. Their correlation of 0.85 suggests significant overlap in exposure. VEXAX charges 0.06%/yr vs 0.32%/yr for FPKFX.

Performance

VEXAX vs. FPKFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Extended Market Index Fund Admiral Shares (VEXAX) and Fidelity Puritan K6 Fund (FPKFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VEXAX achieves a 13.86% return, which is significantly higher than FPKFX's 8.59% return.

VEXAX

• 1D: 2.96%
• 1M: 4.32%
• YTD: 13.86%
• 6M: 11.70%
• 1Y: 27.36%
• 3Y*: 18.98%
• 5Y*: 6.06%
• 10Y*: 12.23%

FPKFX

• 1D: 2.13%
• 1M: 0.00%
• YTD: 8.59%
• 6M: 9.11%
• 1Y: 19.81%
• 3Y*: 16.12%
• 5Y*: 9.04%
• 10Y*: —

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

VEXAX vs. FPKFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
VEXAX Vanguard Extended Market Index Fund Admiral Shares	13.86%	11.42%	15.47%	26.95%	-26.46%	12.45%	32.22%	9.07%
FPKFX Fidelity Puritan K6 Fund	8.59%	11.37%	18.95%	20.29%	-17.11%	19.10%	20.22%	9.41%

Correlation

The correlation between VEXAX and FPKFX 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	0.82
Correlation (5Y) Calculated over the trailing 5-year period	0.85
Correlation (All Time) Calculated using the full available price history since Jun 14, 2019	0.85

The correlation between VEXAX and FPKFX has been stable across timeframes, ranging from 0.82 to 0.85 - a consistent structural relationship.

Return for Risk

VEXAX vs. FPKFX — Risk / Return Rank

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

VEXAX

VEXAX Risk / Return Rank: 51
VEXAX Sharpe Ratio Rank: 44
VEXAX Sortino Ratio Rank: 43
VEXAX Omega Ratio Rank: 39
VEXAX Calmar Ratio Rank: 70
VEXAX Martin Ratio Rank: 58

FPKFX

FPKFX Risk / Return Rank: 70
FPKFX Sharpe Ratio Rank: 67
FPKFX Sortino Ratio Rank: 64
FPKFX Omega Ratio Rank: 66
FPKFX Calmar Ratio Rank: 72
FPKFX Martin Ratio Rank: 80

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.

VEXAX vs. FPKFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Extended Market Index Fund Admiral Shares (VEXAX) and Fidelity Puritan K6 Fund (FPKFX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	VEXAX	FPKFX	Difference
Sharpe ratio: Return per unit of total volatility	1.53	1.90	-0.37
Sortino ratio: Return per unit of downside risk	2.16	2.61	-0.45
Omega ratio: Gain probability vs. loss probability	1.26	1.35	-0.09
Calmar ratio: Return relative to maximum drawdown	2.65	2.72	-0.07
Martin ratio: Return relative to average drawdown	9.32	11.92	-2.61

VEXAX vs. FPKFX - Sharpe Ratio Comparison

The current VEXAX Sharpe Ratio is 1.53, which is comparable to the FPKFX Sharpe Ratio of 1.90. The chart below compares the historical Sharpe Ratios of VEXAX and FPKFX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

VEXAX vs. FPKFX - Drawdown Comparison

The maximum VEXAX drawdown since its inception was -58.08%, which is greater than FPKFX's maximum drawdown of -24.46%. Use the drawdown chart below to compare losses from any high point for VEXAX and FPKFX.

Drawdown Indicators

	VEXAX	FPKFX	Difference
Max Drawdown Largest peak-to-trough decline	-58.08%	-24.46%	-33.62%
Max Drawdown (1Y) Largest decline over 1 year	-10.25%	-7.48%	-2.77%
Max Drawdown (3Y) Largest decline over 3 years	-26.84%	-14.90%	-11.94%
Max Drawdown (5Y) Largest decline over 5 years	-36.33%	-22.33%	-14.00%
Max Drawdown (10Y) Largest decline over 10 years	-41.62%	—	—
Current Drawdown Current decline from peak	-1.04%	-1.53%	+0.49%
Average Drawdown Average peak-to-trough decline	-12.17%	-4.78%	-7.39%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.92%	1.70%	+1.22%

Volatility

VEXAX vs. FPKFX - Volatility Comparison

Vanguard Extended Market Index Fund Admiral Shares (VEXAX) has a higher volatility of 6.48% compared to Fidelity Puritan K6 Fund (FPKFX) at 4.70%. This indicates that VEXAX's price experiences larger fluctuations and is considered to be riskier than FPKFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VEXAX	FPKFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.48%	4.70%	+1.78%
Volatility (6M) Calculated over the trailing 6-month period	13.35%	8.90%	+4.45%
Volatility (1Y) Calculated over the trailing 1-year period	17.81%	10.70%	+7.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.43%	12.74%	+9.69%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.40%	14.35%	+8.05%

VEXAX vs. FPKFX - Expense Ratio Comparison

VEXAX has a 0.06% expense ratio, which is lower than FPKFX's 0.32% expense ratio.

Dividends

VEXAX vs. FPKFX - Dividend Comparison

VEXAX's dividend yield for the trailing twelve months is around 1.02%, less than FPKFX's 3.86% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FPKFX Fidelity Puritan K6 Fund	3.86%	4.19%	3.83%	1.67%	1.62%	4.34%	1.40%	0.63%	0.00%	0.00%	0.00%	0.00%
VEXAX Vanguard Extended Market Index Fund Admiral Shares	1.02%	1.14%	1.09%	1.25%	1.15%	1.13%	1.07%	1.30%	1.66%	1.25%	1.43%	1.35%

Frequently Asked Questions

Can I hold both VEXAX and FPKFX in my portfolio?

VEXAX and FPKFX 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, VEXAX or FPKFX?

VEXAX has higher volatility (6.48%) compared to FPKFX (4.70%). In terms of maximum drawdown, VEXAX dropped -58.08% vs FPKFX's -24.46%.

Which has better risk-adjusted returns?

FPKFX currently has the higher Sharpe Ratio (1.90 vs 1.53), 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.