POGRX vs. FSKAX

Last updated Jul 14, 2026

POGRX (PRIMECAP Odyssey Growth Fund) and FSKAX (Fidelity Total Market Index Fund) are both Large Cap Blend Equities funds. Over the past 10 years, POGRX returned 17.30%/yr vs 14.76%/yr for FSKAX. Their correlation of 0.91 suggests significant overlap in exposure. POGRX charges 0.66%/yr vs 0.01%/yr for FSKAX.

Performance

POGRX vs. FSKAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PRIMECAP Odyssey Growth Fund (POGRX) 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, POGRX achieves a 27.40% return, which is significantly higher than FSKAX's 11.88% return. Over the past 10 years, POGRX has outperformed FSKAX with an annualized return of 17.30%, while FSKAX has yielded a comparatively lower 14.76% annualized return.

POGRX

• 1D: -0.64%
• 1M: 0.88%
• 6M: 20.95%
• YTD: 27.40%
• 1Y: 54.93%
• 3Y*: 28.23%
• 5Y*: 15.63%
• 10Y*: 17.30%

FSKAX

• 1D: 0.32%
• 1M: 1.94%
• 6M: 9.36%
• YTD: 11.88%
• 1Y: 22.69%
• 3Y*: 20.69%
• 5Y*: 12.12%
• 10Y*: 14.76%

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

POGRX vs. FSKAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
POGRX PRIMECAP Odyssey Growth Fund	27.40%	32.99%	13.09%	23.85%	-14.61%	18.81%	17.05%	23.98%	-4.56%	32.07%
FSKAX Fidelity Total Market Index Fund	11.88%	17.06%	23.89%	26.12%	-19.53%	25.66%	20.79%	30.92%	-5.32%	20.85%

Correlation

The correlation between POGRX and FSKAX is 0.84, 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	0.84
Correlation (3Y) Calculated over the trailing 3-year period	0.88
Correlation (5Y) Calculated over the trailing 5-year period	0.92
Correlation (10Y) Calculated over the trailing 10-year period	0.91
Correlation (All Time) Calculated using the full available price history since Sep 8, 2011	0.91

The correlation between POGRX and FSKAX has been stable across timeframes, ranging from 0.84 to 0.92 - a consistent structural relationship.

Return for Risk

POGRX vs. FSKAX — Risk / Return Rank

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

POGRX

POGRX Risk / Return Rank: 90
POGRX Sharpe Ratio Rank: 94
POGRX Sortino Ratio Rank: 88
POGRX Omega Ratio Rank: 85
POGRX Calmar Ratio Rank: 90
POGRX Martin Ratio Rank: 93

FSKAX

FSKAX Risk / Return Rank: 63
FSKAX Sharpe Ratio Rank: 60
FSKAX Sortino Ratio Rank: 56
FSKAX Omega Ratio Rank: 57
FSKAX Calmar Ratio Rank: 66
FSKAX Martin Ratio Rank: 77

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.

POGRX vs. FSKAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PRIMECAP Odyssey Growth Fund (POGRX) 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.

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.

	POGRX	FSKAX	Difference
Sharpe ratio: Return per unit of total volatility	2.64	1.73	+0.92
Sortino ratio: Return per unit of downside risk	3.50	2.38	+1.12
Omega ratio: Gain probability vs. loss probability	1.46	1.31	+0.15
Calmar ratio: Return relative to maximum drawdown	3.74	2.50	+1.24
Martin ratio: Return relative to average drawdown	15.35	10.91	+4.43

POGRX vs. FSKAX - Sharpe Ratio Comparison

The current POGRX Sharpe Ratio is 2.64, which is higher than the FSKAX Sharpe Ratio of 1.73. The chart below compares the historical Sharpe Ratios of POGRX 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.

Drawdowns

POGRX vs. FSKAX - Drawdown Comparison

The maximum POGRX drawdown since its inception was -51.63%, which is greater than FSKAX's maximum drawdown of -35.01%. Use the drawdown chart below to compare losses from any high point for POGRX and FSKAX.

Drawdown Indicators

	POGRX	FSKAX	Difference
Max Drawdown Largest peak-to-trough decline	-51.63%	-35.01%	-16.62%
Max Drawdown (1Y) Largest decline over 1 year	-14.40%	-8.92%	-5.48%
Max Drawdown (3Y) Largest decline over 3 years	-22.13%	-19.43%	-2.70%
Max Drawdown (5Y) Largest decline over 5 years	-26.85%	-25.39%	-1.46%
Max Drawdown (10Y) Largest decline over 10 years	-35.29%	-35.01%	-0.28%
Current Drawdown Current decline from peak	-4.82%	-0.18%	-4.64%
Average Drawdown Average peak-to-trough decline	-7.11%	-4.00%	-3.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.50%	2.04%	+1.46%

Volatility

POGRX vs. FSKAX - Volatility Comparison

PRIMECAP Odyssey Growth Fund (POGRX) has a higher volatility of 9.27% compared to Fidelity Total Market Index Fund (FSKAX) at 4.29%. This indicates that POGRX's price experiences larger fluctuations and is considered to be riskier than FSKAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	POGRX	FSKAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.27%	4.29%	+4.98%
Volatility (6M) Calculated over the trailing 6-month period	17.35%	10.19%	+7.16%
Volatility (1Y) Calculated over the trailing 1-year period	20.37%	12.91%	+7.46%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.07%	17.51%	+2.56%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.58%	18.43%	+2.15%

POGRX vs. FSKAX - Expense Ratio Comparison

POGRX has a 0.66% expense ratio, which is higher than FSKAX's 0.02% expense ratio.

Dividends

POGRX vs. FSKAX - Dividend Comparison

POGRX's dividend yield for the trailing twelve months is around 19.54%, more than FSKAX's 0.93% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FSKAX Fidelity Total Market Index Fund	0.93%	1.01%	1.19%	1.41%	1.62%	1.15%	1.45%	1.94%	2.54%	2.07%	2.43%	0.82%
POGRX PRIMECAP Odyssey Growth Fund	19.54%	24.89%	20.79%	13.28%	12.36%	13.68%	12.50%	5.13%	2.45%	1.54%	5.83%	1.29%

Frequently Asked Questions

Can I hold both POGRX and FSKAX in my portfolio?

POGRX and FSKAX have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, POGRX or FSKAX?

POGRX has higher volatility (9.27%) compared to FSKAX (4.29%). In terms of maximum drawdown, POGRX dropped -51.63% vs FSKAX's -35.01%.

Which has better risk-adjusted returns?

POGRX currently has the higher Sharpe Ratio (2.64 vs 1.73), 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.