FPKFX vs. FSKAX

Last updated Jun 5, 2026

FPKFX (Fidelity Puritan K6 Fund) and FSKAX (Fidelity Total Market Index Fund) are both mutual funds - FPKFX is a Diversified Portfolio fund managed by Fidelity, while FSKAX is a Large Cap Blend Equities fund managed by Fidelity. Over the past 5 years, FPKFX returned 9.36%/yr vs 12.71%/yr for FSKAX. With a 0.95 correlation, they move nearly in lockstep. FPKFX charges 0.32%/yr vs 0.01%/yr for FSKAX.

Performance

FPKFX vs. FSKAX - Performance Comparison

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

Returns By Period

In the year-to-date period, FPKFX achieves a 9.75% return, which is significantly lower than FSKAX's 11.22% return.

FPKFX

• 1D: -0.32%
• 1M: 3.11%
• YTD: 9.75%
• 6M: 9.47%
• 1Y: 21.84%
• 3Y*: 16.86%
• 5Y*: 9.36%
• 10Y*: —

FSKAX

• 1D: -0.77%
• 1M: 4.09%
• YTD: 11.22%
• 6M: 10.94%
• 1Y: 28.11%
• 3Y*: 22.10%
• 5Y*: 12.71%
• 10Y*: 15.01%

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

FPKFX vs. FSKAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
FPKFX Fidelity Puritan K6 Fund	9.75%	11.37%	18.95%	20.29%	-17.11%	19.10%	20.22%	9.41%
FSKAX Fidelity Total Market Index Fund	11.22%	17.06%	23.89%	26.12%	-19.53%	25.66%	20.79%	12.54%

Correlation

The correlation between FPKFX and FSKAX is 0.95, 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	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.95
Correlation (5Y) Calculated over the trailing 5-year period	0.96
Correlation (All Time) Calculated using the full available price history since Jun 17, 2019	0.96

The correlation between FPKFX and FSKAX has been stable across timeframes, ranging from 0.95 to 0.96 - a consistent structural relationship.

Return for Risk

FPKFX vs. FSKAX — Risk / Return Rank

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

FPKFX

FPKFX Risk / Return Rank: 60
FPKFX Sharpe Ratio Rank: 57
FPKFX Sortino Ratio Rank: 55
FPKFX Omega Ratio Rank: 56
FPKFX Calmar Ratio Rank: 61
FPKFX Martin Ratio Rank: 70

FSKAX

FSKAX Risk / Return Rank: 63
FSKAX Sharpe Ratio Rank: 60
FSKAX Sortino Ratio Rank: 56
FSKAX Omega Ratio Rank: 55
FSKAX Calmar Ratio Rank: 67
FSKAX Martin Ratio Rank: 78

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.

FPKFX vs. FSKAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Puritan K6 Fund (FPKFX) and Fidelity Total Market Index Fund (FSKAX). 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.

	FPKFX	FSKAX	Difference
Sharpe ratio: Return per unit of total volatility	2.24	2.30	-0.06
Sortino ratio: Return per unit of downside risk	3.13	3.15	-0.02
Omega ratio: Gain probability vs. loss probability	1.42	1.41	0.00
Calmar ratio: Return relative to maximum drawdown	3.00	3.17	-0.17
Martin ratio: Return relative to average drawdown	13.42	14.55	-1.12
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FPKFX vs. FSKAX - Sharpe Ratio Comparison

The current FPKFX Sharpe Ratio is 2.24, which is comparable to the FSKAX Sharpe Ratio of 2.30. The chart below compares the historical Sharpe Ratios of FPKFX and FSKAX, 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

	FPKFX	FSKAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.24	2.30	-0.06
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.75	0.73	+0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.82	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.88	0.85	+0.03

Drawdowns

FPKFX vs. FSKAX - Drawdown Comparison

The maximum FPKFX drawdown since its inception was -24.46%, smaller than the maximum FSKAX drawdown of -35.01%. Use the drawdown chart below to compare losses from any high point for FPKFX and FSKAX.

Drawdown Indicators

	FPKFX	FSKAX	Difference
Max Drawdown Largest peak-to-trough decline	-24.46%	-35.01%	+10.55%
Max Drawdown (1Y) Largest decline over 1 year	-7.48%	-8.92%	+1.44%
Max Drawdown (3Y) Largest decline over 3 years	-14.90%	-19.43%	+4.53%
Max Drawdown (5Y) Largest decline over 5 years	-22.33%	-25.39%	+3.06%
Max Drawdown (10Y) Largest decline over 10 years	—	-35.01%	—
Current Drawdown Current decline from peak	-0.32%	-0.77%	+0.45%
Average Drawdown Average peak-to-trough decline	-4.79%	-4.02%	-0.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.66%	1.94%	-0.28%

Volatility

FPKFX vs. FSKAX - Volatility Comparison

Fidelity Puritan K6 Fund (FPKFX) and Fidelity Total Market Index Fund (FSKAX) have volatilities of 3.22% and 3.08%, 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

	FPKFX	FSKAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.22%	3.08%	+0.14%
Volatility (6M) Calculated over the trailing 6-month period	8.03%	9.25%	-1.22%
Volatility (1Y) Calculated over the trailing 1-year period	9.99%	12.29%	-2.30%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	12.63%	17.41%	-4.78%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	14.30%	18.46%	-4.16%

FPKFX vs. FSKAX - Expense Ratio Comparison

FPKFX has a 0.32% expense ratio, which is higher than FSKAX's 0.02% expense ratio.

Dividends

FPKFX vs. FSKAX - Dividend Comparison

FPKFX's dividend yield for the trailing twelve months is around 3.82%, more than FSKAX's 0.94% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FPKFX Fidelity Puritan K6 Fund	3.82%	4.19%	3.83%	1.67%	1.62%	4.34%	1.40%	0.63%	0.00%	0.00%	0.00%	0.00%
FSKAX Fidelity Total Market Index Fund	0.94%	1.01%	1.19%	1.41%	1.62%	1.15%	1.45%	1.94%	2.54%	2.07%	2.43%	0.82%

Frequently Asked Questions

Can I hold both FPKFX and FSKAX in my portfolio?

With a correlation of 0.95, FPKFX and FSKAX 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, FPKFX or FSKAX?

FPKFX has higher volatility (3.22%) compared to FSKAX (3.08%). In terms of maximum drawdown, FPKFX dropped -24.46% vs FSKAX's -35.01%.

Which has better risk-adjusted returns?

FSKAX currently has the higher Sharpe Ratio (2.30 vs 2.24), 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.