VHCOX vs. POAGX

Last updated Jun 5, 2026

VHCOX (Vanguard Capital Opportunity Fund Investor Shares) and POAGX (PrimeCap Odyssey Aggressive Growth Fund) are both Mid Cap Growth Equities funds. Over the past 10 years, VHCOX returned 17.07%/yr vs 15.85%/yr for POAGX. Their correlation of 0.94 suggests significant overlap in exposure. VHCOX charges 0.43%/yr vs 0.65%/yr for POAGX.

Performance

VHCOX vs. POAGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Capital Opportunity Fund Investor Shares (VHCOX) and PrimeCap Odyssey Aggressive Growth Fund (POAGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both stocks are quite close, with VHCOX having a 25.62% return and POAGX slightly lower at 24.83%. Over the past 10 years, VHCOX has outperformed POAGX with an annualized return of 17.07%, while POAGX has yielded a comparatively lower 15.85% annualized return.

VHCOX

• 1D: 0.15%
• 1M: 12.04%
• YTD: 25.62%
• 6M: 27.15%
• 1Y: 55.65%
• 3Y*: 26.86%
• 5Y*: 14.44%
• 10Y*: 17.07%

POAGX

• 1D: -0.18%
• 1M: 14.18%
• YTD: 24.83%
• 6M: 25.56%
• 1Y: 59.73%
• 3Y*: 25.49%
• 5Y*: 10.54%
• 10Y*: 15.85%

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

VHCOX vs. POAGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VHCOX Vanguard Capital Opportunity Fund Investor Shares	25.62%	25.74%	14.00%	25.55%	-17.61%	20.85%	22.73%	27.20%	-3.76%	28.28%
POAGX PrimeCap Odyssey Aggressive Growth Fund	24.83%	28.68%	12.56%	25.02%	-24.25%	4.02%	29.17%	23.52%	-7.10%	33.60%

Correlation

The correlation between VHCOX and POAGX is 0.96 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.96
Correlation (3Y) Calculated over the trailing 3-year period	0.94
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (10Y) Calculated over the trailing 10-year period	0.94
Correlation (All Time) Calculated using the full available price history since Nov 3, 2004	0.94

The correlation between VHCOX and POAGX has been stable across timeframes, ranging from 0.94 to 0.96 - a consistent structural relationship.

Return for Risk

VHCOX vs. POAGX — Risk / Return Rank

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

VHCOX

VHCOX Risk / Return Rank: 90
VHCOX Sharpe Ratio Rank: 94
VHCOX Sortino Ratio Rank: 90
VHCOX Omega Ratio Rank: 84
VHCOX Calmar Ratio Rank: 89
VHCOX Martin Ratio Rank: 93

POAGX

POAGX Risk / Return Rank: 81
POAGX Sharpe Ratio Rank: 89
POAGX Sortino Ratio Rank: 81
POAGX Omega Ratio Rank: 76
POAGX Calmar Ratio Rank: 79
POAGX 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.

VHCOX vs. POAGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Capital Opportunity Fund Investor Shares (VHCOX) and PrimeCap Odyssey Aggressive Growth Fund (POAGX). 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.

	VHCOX	POAGX	Difference
Sharpe ratio: Return per unit of total volatility	3.32	2.97	+0.35
Sortino ratio: Return per unit of downside risk	4.45	3.91	+0.53
Omega ratio: Gain probability vs. loss probability	1.58	1.50	+0.08
Calmar ratio: Return relative to maximum drawdown	4.53	3.58	+0.95
Martin ratio: Return relative to average drawdown	20.34	14.63	+5.71
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VHCOX vs. POAGX - Sharpe Ratio Comparison

The current VHCOX Sharpe Ratio is 3.32, which is comparable to the POAGX Sharpe Ratio of 2.97. The chart below compares the historical Sharpe Ratios of VHCOX and POAGX, 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

	VHCOX	POAGX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.32	2.97	+0.35
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.73	0.46	+0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.84	0.69	+0.15
Sharpe Ratio (All Time) Calculated using the full available price history	0.62	0.64	-0.02

Drawdowns

VHCOX vs. POAGX - Drawdown Comparison

The maximum VHCOX drawdown since its inception was -54.76%, roughly equal to the maximum POAGX drawdown of -55.77%. Use the drawdown chart below to compare losses from any high point for VHCOX and POAGX.

Drawdown Indicators

	VHCOX	POAGX	Difference
Max Drawdown Largest peak-to-trough decline	-54.76%	-55.77%	+1.01%
Max Drawdown (1Y) Largest decline over 1 year	-12.43%	-16.87%	+4.44%
Max Drawdown (3Y) Largest decline over 3 years	-23.87%	-24.73%	+0.86%
Max Drawdown (5Y) Largest decline over 5 years	-27.59%	-38.80%	+11.21%
Max Drawdown (10Y) Largest decline over 10 years	-33.78%	-38.80%	+5.02%
Current Drawdown Current decline from peak	0.00%	-0.18%	+0.18%
Average Drawdown Average peak-to-trough decline	-10.00%	-9.53%	-0.47%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.77%	4.12%	-1.35%

Volatility

VHCOX vs. POAGX - Volatility Comparison

The current volatility for Vanguard Capital Opportunity Fund Investor Shares (VHCOX) is 6.64%, while PrimeCap Odyssey Aggressive Growth Fund (POAGX) has a volatility of 8.00%. This indicates that VHCOX experiences smaller price fluctuations and is considered to be less risky than POAGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VHCOX	POAGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.64%	8.00%	-1.36%
Volatility (6M) Calculated over the trailing 6-month period	13.71%	16.19%	-2.48%
Volatility (1Y) Calculated over the trailing 1-year period	16.99%	20.34%	-3.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.88%	22.89%	-3.01%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.34%	22.89%	-2.55%

VHCOX vs. POAGX - Expense Ratio Comparison

VHCOX has a 0.43% expense ratio, which is lower than POAGX's 0.65% expense ratio.

Dividends

VHCOX vs. POAGX - Dividend Comparison

VHCOX's dividend yield for the trailing twelve months is around 7.66%, less than POAGX's 10.62% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
POAGX PrimeCap Odyssey Aggressive Growth Fund	10.62%	13.25%	9.90%	5.54%	10.78%	5.93%	7.84%	5.33%	7.82%	0.86%	16.63%	12.52%
VHCOX Vanguard Capital Opportunity Fund Investor Shares	7.66%	9.62%	8.16%	2.33%	9.26%	10.44%	9.10%	6.41%	12.11%	3.87%	5.66%	5.30%

Frequently Asked Questions

Can I hold both VHCOX and POAGX in my portfolio?

With a correlation of 0.96, VHCOX and POAGX 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, VHCOX or POAGX?

POAGX has higher volatility (8.00%) compared to VHCOX (6.64%). In terms of maximum drawdown, VHCOX dropped -54.76% vs POAGX's -55.77%.

Which has better risk-adjusted returns?

VHCOX currently has the higher Sharpe Ratio (3.32 vs 2.97), 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.