TWVLX vs. VPMCX

Last updated Jul 14, 2026

TWVLX (American Century Value Fund) and VPMCX (Vanguard PRIMECAP Fund Investor Shares) are both mutual funds - TWVLX is a Large Cap Value Equities fund managed by American Century, while VPMCX is a Large Cap Growth Equities fund actively managed by Vanguard. Over the past 10 years, TWVLX returned 10.37%/yr vs 17.38%/yr for VPMCX. A 0.78 correlation means they provide meaningful diversification when combined. TWVLX charges 1.01%/yr vs 0.35%/yr for VPMCX.

Performance

TWVLX vs. VPMCX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Value Fund (TWVLX) and Vanguard PRIMECAP Fund Investor Shares (VPMCX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, TWVLX achieves a 13.95% return, which is significantly lower than VPMCX's 25.07% return. Over the past 10 years, TWVLX has underperformed VPMCX with an annualized return of 10.37%, while VPMCX has yielded a comparatively higher 17.38% annualized return.

TWVLX

• 1D: 0.55%
• 1M: 2.58%
• 6M: 11.34%
• YTD: 13.95%
• 1Y: 23.50%
• 3Y*: 14.84%
• 5Y*: 10.47%
• 10Y*: 10.37%

VPMCX

• 1D: -0.41%
• 1M: -0.21%
• 6M: 18.98%
• YTD: 25.07%
• 1Y: 48.84%
• 3Y*: 26.40%
• 5Y*: 15.53%
• 10Y*: 17.38%

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

TWVLX vs. VPMCX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
TWVLX American Century Value Fund	13.95%	15.70%	9.10%	8.78%	0.39%	24.41%	0.68%	26.93%	-8.91%	8.50%
VPMCX Vanguard PRIMECAP Fund Investor Shares	25.07%	29.60%	13.23%	28.16%	-15.22%	21.64%	17.16%	27.78%	-1.99%	28.17%

Correlation

The correlation between TWVLX and VPMCX is 0.49, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.49
Correlation (3Y) Calculated over the trailing 3-year period	0.58
Correlation (5Y) Calculated over the trailing 5-year period	0.70
Correlation (10Y) Calculated over the trailing 10-year period	0.73
Correlation (All Time) Calculated using the full available price history since Aug 31, 1993	0.78

Over the past year, the correlation between TWVLX and VPMCX has dropped to 0.49 - well below their long-term average of 0.78, suggesting their price drivers have been diverging.

Return for Risk

TWVLX vs. VPMCX — Risk / Return Rank

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

TWVLX

TWVLX Risk / Return Rank: 83
TWVLX Sharpe Ratio Rank: 83
TWVLX Sortino Ratio Rank: 84
TWVLX Omega Ratio Rank: 78
TWVLX Calmar Ratio Rank: 86
TWVLX Martin Ratio Rank: 81

VPMCX

VPMCX Risk / Return Rank: 91
VPMCX Sharpe Ratio Rank: 94
VPMCX Sortino Ratio Rank: 88
VPMCX Omega Ratio Rank: 86
VPMCX Calmar Ratio Rank: 93
VPMCX Martin Ratio Rank: 96

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.

TWVLX vs. VPMCX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Value Fund (TWVLX) and Vanguard PRIMECAP Fund Investor Shares (VPMCX). 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.

	TWVLX	VPMCX	Difference
Sharpe ratio: Return per unit of total volatility	2.18	2.62	-0.45
Sortino ratio: Return per unit of downside risk	3.23	3.50	-0.28
Omega ratio: Gain probability vs. loss probability	1.39	1.47	-0.08
Calmar ratio: Return relative to maximum drawdown	3.27	4.11	-0.84
Martin ratio: Return relative to average drawdown	11.45	17.97	-6.52

TWVLX vs. VPMCX - Sharpe Ratio Comparison

The current TWVLX Sharpe Ratio is 2.18, which is comparable to the VPMCX Sharpe Ratio of 2.62. The chart below compares the historical Sharpe Ratios of TWVLX and VPMCX, 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

TWVLX vs. VPMCX - Drawdown Comparison

The maximum TWVLX drawdown since its inception was -53.19%, which is greater than VPMCX's maximum drawdown of -50.45%. Use the drawdown chart below to compare losses from any high point for TWVLX and VPMCX.

Drawdown Indicators

	TWVLX	VPMCX	Difference
Max Drawdown Largest peak-to-trough decline	-53.19%	-50.45%	-2.74%
Max Drawdown (1Y) Largest decline over 1 year	-7.03%	-11.73%	+4.70%
Max Drawdown (3Y) Largest decline over 3 years	-12.83%	-20.56%	+7.73%
Max Drawdown (5Y) Largest decline over 5 years	-17.12%	-25.25%	+8.13%
Max Drawdown (10Y) Largest decline over 10 years	-39.88%	-32.65%	-7.23%
Current Drawdown Current decline from peak	-0.43%	-4.14%	+3.71%
Average Drawdown Average peak-to-trough decline	-6.62%	-7.39%	+0.77%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.01%	2.68%	-0.67%

Volatility

TWVLX vs. VPMCX - Volatility Comparison

The current volatility for American Century Value Fund (TWVLX) is 3.24%, while Vanguard PRIMECAP Fund Investor Shares (VPMCX) has a volatility of 8.70%. This indicates that TWVLX experiences smaller price fluctuations and is considered to be less risky than VPMCX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	TWVLX	VPMCX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.24%	8.70%	-5.46%
Volatility (6M) Calculated over the trailing 6-month period	7.79%	15.63%	-7.84%
Volatility (1Y) Calculated over the trailing 1-year period	10.58%	18.41%	-7.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	14.01%	18.70%	-4.69%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.62%	19.32%	-1.70%

TWVLX vs. VPMCX - Expense Ratio Comparison

TWVLX has a 1.01% expense ratio, which is higher than VPMCX's 0.35% expense ratio.

Dividends

TWVLX vs. VPMCX - Dividend Comparison

TWVLX's dividend yield for the trailing twelve months is around 8.75%, less than VPMCX's 13.08% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
TWVLX American Century Value Fund	8.75%	10.07%	11.14%	7.34%	15.07%	13.94%	3.49%	8.70%	11.82%	7.24%	3.22%	8.56%
VPMCX Vanguard PRIMECAP Fund Investor Shares	13.08%	16.36%	6.62%	7.16%	9.85%	10.08%	9.74%	7.15%	8.32%	4.53%	5.05%	5.91%

Frequently Asked Questions

Can I hold both TWVLX and VPMCX in my portfolio?

TWVLX and VPMCX have a correlation of 0.49, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, TWVLX or VPMCX?

VPMCX has higher volatility (8.70%) compared to TWVLX (3.24%). In terms of maximum drawdown, TWVLX dropped -53.19% vs VPMCX's -50.45%.

Which has better risk-adjusted returns?

VPMCX currently has the higher Sharpe Ratio (2.62 vs 2.18), 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.