POAGX vs. FAGKX

Last updated Aug 1, 2026

POAGX (PRIMECAP Odyssey Aggressive Growth Fund) and FAGKX (Fidelity Growth Strategies Fund Class K) are both Mid Cap Growth Equities funds. Over the past 10 years, POAGX returned 14.55%/yr vs 10.48%/yr for FAGKX. Their correlation of 0.87 means they have usually moved in the same direction. POAGX charges 0.66%/yr vs 0.52%/yr for FAGKX.

Performance

POAGX vs. FAGKX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PRIMECAP Odyssey Aggressive Growth Fund (POAGX) and Fidelity Growth Strategies Fund Class K (FAGKX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, POAGX achieves a 20.34% return, which is significantly higher than FAGKX's 3.69% return. Over the past 10 years, POAGX has outperformed FAGKX with an annualized return of 14.55%, while FAGKX has yielded a comparatively lower 10.48% annualized return.

POAGX

• 1D: 4.55%
• 1M: -3.72%
• 6M: 14.92%
• YTD: 20.34%
• 1Y: 47.84%
• 3Y*: 21.71%
• 5Y*: 9.39%
• 10Y*: 14.55%
• ALL TIME*: 14.07%

FAGKX

• 1D: 3.45%
• 1M: -6.65%
• 6M: 3.58%
• YTD: 3.69%
• 1Y: -5.23%
• 3Y*: 9.00%
• 5Y*: 3.31%
• 10Y*: 10.48%
• ALL TIME*: 8.75%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
FAGKX Fidelity Growth Strategies Fund Class K	$0.00	$0.00	$0.00
POAGX PRIMECAP Odyssey Aggressive Growth Fund	$0.00	$0.00	$0.00

POAGX vs. FAGKX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
POAGX PRIMECAP Odyssey Aggressive Growth Fund	20.34%	28.68%	12.56%	25.02%	-24.25%	4.02%	29.17%	23.52%	-7.10%	33.60%
FAGKX Fidelity Growth Strategies Fund Class K	3.69%	3.13%	17.83%	21.07%	-26.41%	21.43%	29.49%	36.75%	-6.77%	21.07%

Correlation

The correlation between POAGX and FAGKX is 0.84, meaning they have usually moved in the same direction, including during past declines.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.84
Correlation (3Y) Balances recent behavior with more history.	0.83
Correlation (5Y) Shows whether the relationship held over a longer period.	0.86
Correlation (10Y) Provides a long-term view across more market conditions.	0.85
Correlation (All Time) Calculated using the full available price history since May 15, 2008	0.87

The correlation between POAGX and FAGKX has been stable across timeframes, ranging from 0.83 to 0.87 - a consistent structural relationship.

Return for Risk

POAGX vs. FAGKX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

POAGX

POAGX Risk / Return Rank: 78
POAGX Sharpe Ratio Rank: 79
POAGX Sortino Ratio Rank: 76
POAGX Omega Ratio Rank: 74
POAGX Calmar Ratio Rank: 81
POAGX Martin Ratio Rank: 80

FAGKX

FAGKX Risk / Return Rank: 2
FAGKX Sharpe Ratio Rank: 2
FAGKX Sortino Ratio Rank: 2
FAGKX Omega Ratio Rank: 2
FAGKX Calmar Ratio Rank: 2
FAGKX Martin Ratio Rank: 1

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

POAGX vs. FAGKX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PRIMECAP Odyssey Aggressive Growth Fund (POAGX) and Fidelity Growth Strategies Fund Class K (FAGKX). 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.

	POAGX	FAGKX	Difference
Sharpe ratio: Return per unit of total volatility	1.83	-0.30	+2.13
Sortino ratio: Return per unit of downside risk	2.54	-0.26	+2.80
Omega ratio: Gain probability vs. loss probability	1.31	0.97	+0.35
Calmar ratio: Return relative to maximum drawdown	2.62	-0.36	+2.98
Martin ratio: Return relative to average drawdown	9.51	-0.88	+10.39

POAGX vs. FAGKX - Sharpe Ratio Comparison

The current POAGX Sharpe Ratio is 1.83, which is higher than the FAGKX Sharpe Ratio of -0.30. The chart below compares the historical Sharpe Ratios of POAGX and FAGKX, 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

POAGX vs. FAGKX - Drawdown Comparison

The maximum POAGX drawdown since its inception was -55.77%, roughly equal to the maximum FAGKX drawdown of -54.37%. Use the drawdown chart below to compare losses from any high point for POAGX and FAGKX.

Drawdown Indicators

	POAGX	FAGKX	Difference
Max Drawdown Largest peak-to-trough decline	-55.77%	-54.37%	-1.40%
Max Drawdown (1Y) Largest decline over 1 year	-16.87%	-20.29%	+3.42%
Max Drawdown (3Y) Largest decline over 3 years	-24.73%	-31.00%	+6.27%
Max Drawdown (5Y) Largest decline over 5 years	-38.80%	-36.57%	-2.23%
Max Drawdown (10Y) Largest decline over 10 years	-38.80%	-36.57%	-2.23%
Current Drawdown Current decline from peak	-8.24%	-10.91%	+2.67%
Average Drawdown Average peak-to-trough decline	-9.50%	-10.07%	+0.57%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.65%	8.30%	-3.65%

Volatility

POAGX vs. FAGKX - Volatility Comparison

PRIMECAP Odyssey Aggressive Growth Fund (POAGX) has a higher volatility of 8.56% compared to Fidelity Growth Strategies Fund Class K (FAGKX) at 7.89%. This indicates that POAGX's price experiences larger fluctuations and is considered to be riskier than FAGKX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	POAGX	FAGKX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.56%	7.89%	+0.67%
Volatility (6M) Calculated over the trailing 6-month period	20.52%	18.44%	+2.08%
Volatility (1Y) Calculated over the trailing 1-year period	24.20%	23.99%	+0.21%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.59%	23.93%	-0.34%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.15%	22.34%	+0.81%

POAGX vs. FAGKX - Expense Ratio Comparison

POAGX has a 0.66% expense ratio, which is higher than FAGKX's 0.52% expense ratio.

Dividends

POAGX vs. FAGKX - Dividend Comparison

POAGX's dividend yield for the trailing twelve months is around 11.01%, while FAGKX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
FAGKX Fidelity Growth Strategies Fund Class K	0.00%	0.00%	0.00%	0.16%	0.00%	13.99%	8.30%	3.73%	0.90%	0.05%	0.72%	0.29%
POAGX PRIMECAP Odyssey Aggressive Growth Fund	11.01%	13.25%	9.90%	5.54%	10.78%	5.93%	7.84%	5.33%	7.82%	0.86%	16.63%	12.52%

Frequently Asked Questions

Can I hold both POAGX and FAGKX in my portfolio?

POAGX and FAGKX 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, POAGX or FAGKX?

POAGX has higher volatility (8.56%) compared to FAGKX (7.89%). In terms of maximum drawdown, POAGX dropped -55.77% vs FAGKX's -54.37%.

Which has better risk-adjusted returns?

POAGX currently has the higher Sharpe Ratio (1.83 vs -0.30), 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.