VMFVX vs. AMDVX

Last updated Jun 23, 2026

VMFVX (Vanguard S&P Mid-Cap 400 Value Index Fund Institutional Shares) and AMDVX (American Century Mid Cap Value R6) are both Mid Cap Value Equities funds. Over the past 10 years, VMFVX returned 10.69%/yr vs 9.45%/yr for AMDVX. Their correlation of 0.93 suggests significant overlap in exposure. VMFVX charges 0.08%/yr vs 0.63%/yr for AMDVX.

Performance

VMFVX vs. AMDVX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard S&P Mid-Cap 400 Value Index Fund Institutional Shares (VMFVX) and American Century Mid Cap Value R6 (AMDVX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VMFVX achieves a 10.96% return, which is significantly higher than AMDVX's 8.98% return. Over the past 10 years, VMFVX has outperformed AMDVX with an annualized return of 10.69%, while AMDVX has yielded a comparatively lower 9.45% annualized return.

VMFVX

• 1D: 0.89%
• 1M: 3.13%
• YTD: 10.96%
• 6M: 8.89%
• 1Y: 22.11%
• 3Y*: 13.31%
• 5Y*: 9.31%
• 10Y*: 10.69%

AMDVX

• 1D: 0.13%
• 1M: 0.96%
• YTD: 8.98%
• 6M: 8.03%
• 1Y: 17.96%
• 3Y*: 10.37%
• 5Y*: 8.48%
• 10Y*: 9.45%

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

VMFVX vs. AMDVX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VMFVX Vanguard S&P Mid-Cap 400 Value Index Fund Institutional Shares	10.96%	7.57%	10.59%	16.49%	-7.03%	30.54%	3.68%	26.18%	-11.90%	12.27%
AMDVX American Century Mid Cap Value R6	8.98%	9.21%	8.87%	6.54%	-0.35%	23.83%	1.99%	29.32%	-12.18%	11.95%

Correlation

The correlation between VMFVX and AMDVX is 0.89, 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	0.89
Correlation (3Y) Calculated over the trailing 3-year period	0.89
Correlation (5Y) Calculated over the trailing 5-year period	0.91
Correlation (10Y) Calculated over the trailing 10-year period	0.93
Correlation (All Time) Calculated using the full available price history since Jan 2, 2014	0.93

The correlation between VMFVX and AMDVX has been stable across timeframes, ranging from 0.89 to 0.93 - a consistent structural relationship.

Return for Risk

VMFVX vs. AMDVX — Risk / Return Rank

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

VMFVX

VMFVX Risk / Return Rank: 32
VMFVX Sharpe Ratio Rank: 30
VMFVX Sortino Ratio Rank: 33
VMFVX Omega Ratio Rank: 28
VMFVX Calmar Ratio Rank: 36
VMFVX Martin Ratio Rank: 35

AMDVX

AMDVX Risk / Return Rank: 33
AMDVX Sharpe Ratio Rank: 32
AMDVX Sortino Ratio Rank: 35
AMDVX Omega Ratio Rank: 30
AMDVX Calmar Ratio Rank: 35
AMDVX Martin Ratio Rank: 33

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.

VMFVX vs. AMDVX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard S&P Mid-Cap 400 Value Index Fund Institutional Shares (VMFVX) and American Century Mid Cap Value R6 (AMDVX). 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.

	VMFVX	AMDVX	Difference
Sharpe ratio: Return per unit of total volatility	1.47	1.51	-0.04
Sortino ratio: Return per unit of downside risk	2.22	2.30	-0.08
Omega ratio: Gain probability vs. loss probability	1.26	1.27	-0.01
Calmar ratio: Return relative to maximum drawdown	2.13	2.14	0.00
Martin ratio: Return relative to average drawdown	7.36	6.95	+0.42

VMFVX vs. AMDVX - Sharpe Ratio Comparison

The current VMFVX Sharpe Ratio is 1.47, which is comparable to the AMDVX Sharpe Ratio of 1.51. The chart below compares the historical Sharpe Ratios of VMFVX and AMDVX, 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

VMFVX vs. AMDVX - Drawdown Comparison

The maximum VMFVX drawdown since its inception was -45.79%, which is greater than AMDVX's maximum drawdown of -39.21%. Use the drawdown chart below to compare losses from any high point for VMFVX and AMDVX.

Drawdown Indicators

	VMFVX	AMDVX	Difference
Max Drawdown Largest peak-to-trough decline	-45.79%	-39.21%	-6.58%
Max Drawdown (1Y) Largest decline over 1 year	-10.52%	-8.47%	-2.05%
Max Drawdown (3Y) Largest decline over 3 years	-22.46%	-14.50%	-7.96%
Max Drawdown (5Y) Largest decline over 5 years	-22.46%	-16.96%	-5.50%
Max Drawdown (10Y) Largest decline over 10 years	-45.79%	-39.21%	-6.58%
Current Drawdown Current decline from peak	-0.97%	-1.72%	+0.75%
Average Drawdown Average peak-to-trough decline	-5.47%	-3.98%	-1.49%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.04%	2.60%	+0.44%

Volatility

VMFVX vs. AMDVX - Volatility Comparison

Vanguard S&P Mid-Cap 400 Value Index Fund Institutional Shares (VMFVX) has a higher volatility of 4.23% compared to American Century Mid Cap Value R6 (AMDVX) at 3.35%. This indicates that VMFVX's price experiences larger fluctuations and is considered to be riskier than AMDVX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VMFVX	AMDVX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.23%	3.35%	+0.88%
Volatility (6M) Calculated over the trailing 6-month period	10.68%	8.65%	+2.03%
Volatility (1Y) Calculated over the trailing 1-year period	15.25%	11.99%	+3.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.45%	14.64%	+4.81%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.89%	17.48%	+4.41%

VMFVX vs. AMDVX - Expense Ratio Comparison

VMFVX has a 0.08% expense ratio, which is lower than AMDVX's 0.63% expense ratio.

Dividends

VMFVX vs. AMDVX - Dividend Comparison

VMFVX's dividend yield for the trailing twelve months is around 1.70%, less than AMDVX's 14.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AMDVX American Century Mid Cap Value R6	14.41%	14.83%	9.13%	5.59%	15.97%	16.32%	2.14%	1.79%	15.04%	9.85%	4.38%	11.43%
VMFVX Vanguard S&P Mid-Cap 400 Value Index Fund Institutional Shares	1.70%	1.88%	1.81%	1.58%	2.04%	1.81%	2.48%	1.94%	2.01%	1.56%	1.42%	1.73%

Frequently Asked Questions

Can I hold both VMFVX and AMDVX in my portfolio?

VMFVX and AMDVX have a correlation of 0.89, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, VMFVX or AMDVX?

VMFVX has higher volatility (4.23%) compared to AMDVX (3.35%). In terms of maximum drawdown, VMFVX dropped -45.79% vs AMDVX's -39.21%.

Which has better risk-adjusted returns?

AMDVX currently has the higher Sharpe Ratio (1.51 vs 1.47), 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.