VPMAX vs. VMCPX

Last updated Jun 23, 2026

VPMAX (Vanguard PRIMECAP Fund Admiral Shares) and VMCPX (Vanguard Mid-Cap Index Fund Institutional Plus Shares) are both mutual funds - VPMAX is a Large Cap Blend Equities fund managed by Vanguard, while VMCPX is a Mid Cap Blend Equities fund managed by Vanguard. Over the past 10 years, VPMAX returned 18.17%/yr vs 11.68%/yr for VMCPX. Their correlation of 0.89 suggests significant overlap in exposure. VPMAX charges 0.27%/yr vs 0.03%/yr for VMCPX.

Performance

VPMAX vs. VMCPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard PRIMECAP Fund Admiral Shares (VPMAX) and Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VPMAX achieves a 28.16% return, which is significantly higher than VMCPX's 10.88% return. Over the past 10 years, VPMAX has outperformed VMCPX with an annualized return of 18.17%, while VMCPX has yielded a comparatively lower 11.68% annualized return.

VPMAX

• 1D: 2.63%
• 1M: 6.82%
• YTD: 28.16%
• 6M: 27.34%
• 1Y: 60.80%
• 3Y*: 27.27%
• 5Y*: 16.84%
• 10Y*: 18.17%

VMCPX

• 1D: 0.74%
• 1M: 2.63%
• YTD: 10.88%
• 6M: 9.31%
• 1Y: 19.30%
• 3Y*: 15.59%
• 5Y*: 8.44%
• 10Y*: 11.68%

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

VPMAX vs. VMCPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VPMAX Vanguard PRIMECAP Fund Admiral Shares	28.16%	29.70%	13.30%	28.25%	-15.16%	21.72%	17.23%	27.88%	-1.93%	28.28%
VMCPX Vanguard Mid-Cap Index Fund Institutional Plus Shares	10.88%	11.70%	14.68%	16.55%	-18.68%	24.54%	18.20%	31.06%	-9.23%	19.28%

Correlation

The correlation between VPMAX and VMCPX is 0.73, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.73
Correlation (3Y) Calculated over the trailing 3-year period	0.80
Correlation (5Y) Calculated over the trailing 5-year period	0.86
Correlation (10Y) Calculated over the trailing 10-year period	0.87
Correlation (All Time) Calculated using the full available price history since Dec 13, 2010	0.89

The correlation between VPMAX and VMCPX shifts across timeframes, from 0.73 (1 year) to 0.89 (all time), reflecting how their relationship changes across market environments.

VPMAX vs. VMCPX - Sectors Allocation Comparison

Sectors	VPMAX	VMCPX
Technology	28.9%	20.8%
Healthcare	25.1%	7.5%
Industrials	13.2%	17.7%
Consumer Cyclical	11.8%	8.6%
Communication Services	7.7%	3.0%
Financial Services	7.6%	12.5%
Energy	1.8%	7.9%
Basic Materials	1.6%	4.0%
Consumer Defensive	1.1%	4.7%
Real Estate	0.1%	5.1%
Utilities	0.0%	7.9%

Return for Risk

VPMAX vs. VMCPX — Risk / Return Rank

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

VPMAX

VPMAX Risk / Return Rank: 94
VPMAX Sharpe Ratio Rank: 98
VPMAX Sortino Ratio Rank: 94
VPMAX Omega Ratio Rank: 90
VPMAX Calmar Ratio Rank: 94
VPMAX Martin Ratio Rank: 97

VMCPX

VMCPX Risk / Return Rank: 37
VMCPX Sharpe Ratio Rank: 33
VMCPX Sortino Ratio Rank: 32
VMCPX Omega Ratio Rank: 30
VMCPX Calmar Ratio Rank: 44
VMCPX Martin Ratio Rank: 46

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.

VPMAX vs. VMCPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard PRIMECAP Fund Admiral Shares (VPMAX) and Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX). 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.

	VPMAX	VMCPX	Difference
Sharpe ratio: Return per unit of total volatility	3.43	1.54	+1.89
Sortino ratio: Return per unit of downside risk	4.52	2.19	+2.34
Omega ratio: Gain probability vs. loss probability	1.61	1.27	+0.34
Calmar ratio: Return relative to maximum drawdown	5.13	2.42	+2.71
Martin ratio: Return relative to average drawdown	23.31	9.10	+14.21

VPMAX vs. VMCPX - Sharpe Ratio Comparison

The current VPMAX Sharpe Ratio is 3.43, which is higher than the VMCPX Sharpe Ratio of 1.54. The chart below compares the historical Sharpe Ratios of VPMAX and VMCPX, 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

VPMAX vs. VMCPX - Drawdown Comparison

The maximum VPMAX drawdown since its inception was -48.32%, which is greater than VMCPX's maximum drawdown of -39.30%. Use the drawdown chart below to compare losses from any high point for VPMAX and VMCPX.

Drawdown Indicators

	VPMAX	VMCPX	Difference
Max Drawdown Largest peak-to-trough decline	-48.32%	-39.30%	-9.02%
Max Drawdown (1Y) Largest decline over 1 year	-11.72%	-8.13%	-3.59%
Max Drawdown (3Y) Largest decline over 3 years	-20.55%	-18.93%	-1.62%
Max Drawdown (5Y) Largest decline over 5 years	-25.21%	-27.54%	+2.33%
Max Drawdown (10Y) Largest decline over 10 years	-32.65%	-39.30%	+6.65%
Current Drawdown Current decline from peak	0.00%	-0.83%	+0.83%
Average Drawdown Average peak-to-trough decline	-6.57%	-5.20%	-1.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.57%	2.16%	+0.41%

Volatility

VPMAX vs. VMCPX - Volatility Comparison

Vanguard PRIMECAP Fund Admiral Shares (VPMAX) has a higher volatility of 8.43% compared to Vanguard Mid-Cap Index Fund Institutional Plus Shares (VMCPX) at 4.45%. This indicates that VPMAX's price experiences larger fluctuations and is considered to be riskier than VMCPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VPMAX	VMCPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.43%	4.45%	+3.98%
Volatility (6M) Calculated over the trailing 6-month period	14.78%	9.87%	+4.91%
Volatility (1Y) Calculated over the trailing 1-year period	17.53%	12.77%	+4.76%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.53%	17.70%	+0.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.33%	18.95%	+0.38%

VPMAX vs. VMCPX - Expense Ratio Comparison

VPMAX has a 0.27% expense ratio, which is higher than VMCPX's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

VPMAX vs. VMCPX - Dividend Comparison

VPMAX's dividend yield for the trailing twelve months is around 12.84%, more than VMCPX's 1.36% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VMCPX Vanguard Mid-Cap Index Fund Institutional Plus Shares	1.36%	1.53%	1.50%	1.52%	1.61%	1.13%	1.45%	1.49%	1.84%	1.37%	1.47%	1.50%
VPMAX Vanguard PRIMECAP Fund Admiral Shares	12.84%	16.46%	6.71%	7.24%	9.94%	10.18%	9.82%	7.23%	8.43%	4.52%	5.13%	5.99%

Frequently Asked Questions

Can I hold both VPMAX and VMCPX in my portfolio?

VPMAX and VMCPX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VPMAX or VMCPX?

VPMAX has higher volatility (8.43%) compared to VMCPX (4.45%). In terms of maximum drawdown, VPMAX dropped -48.32% vs VMCPX's -39.30%.

Which has better risk-adjusted returns?

VPMAX currently has the higher Sharpe Ratio (3.43 vs 1.54), 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.