DFDMX vs. VMFGX

Last updated Jul 18, 2026

DFDMX (DF Dent Midcap Growth Fund) and VMFGX (Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares) are both Mid Cap Growth Equities funds. Over the past 10 years, DFDMX returned 9.21%/yr vs 11.16%/yr for VMFGX. Their correlation of 0.87 suggests significant overlap in exposure. DFDMX charges 0.85%/yr vs 0.08%/yr for VMFGX.

Performance

DFDMX vs. VMFGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in DF Dent Midcap Growth Fund (DFDMX) and Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares (VMFGX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DFDMX achieves a -4.38% return, which is significantly lower than VMFGX's 17.06% return. Over the past 10 years, DFDMX has underperformed VMFGX with an annualized return of 9.21%, while VMFGX has yielded a comparatively higher 11.16% annualized return.

DFDMX

• 1D: 1.90%
• 1M: 8.20%
• 6M: -7.97%
• YTD: -4.38%
• 1Y: -8.25%
• 3Y*: 3.74%
• 5Y*: -1.02%
• 10Y*: 9.21%

VMFGX

• 1D: -0.40%
• 1M: -0.90%
• 6M: 9.69%
• YTD: 17.06%
• 1Y: 22.70%
• 3Y*: 14.70%
• 5Y*: 8.59%
• 10Y*: 11.16%

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

DFDMX vs. VMFGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DFDMX DF Dent Midcap Growth Fund	-4.38%	0.49%	11.15%	22.91%	-30.52%	12.26%	30.43%	40.14%	-0.24%	31.22%
VMFGX Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares	17.06%	7.43%	15.86%	17.42%	-18.99%	18.83%	22.61%	26.20%	-10.39%	19.87%

Correlation

The correlation between DFDMX and VMFGX is 0.60, 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	0.60
Correlation (3Y) Calculated over the trailing 3-year period	0.78
Correlation (5Y) Calculated over the trailing 5-year period	0.84
Correlation (10Y) Calculated over the trailing 10-year period	0.86
Correlation (All Time) Calculated using the full available price history since Jan 3, 2012	0.87

Over the past year, the correlation between DFDMX and VMFGX has dropped to 0.60 - well below their long-term average of 0.87, suggesting their price drivers have been diverging.

Return for Risk

DFDMX vs. VMFGX — Risk / Return Rank

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

DFDMX

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

VMFGX

VMFGX Risk / Return Rank: 44
VMFGX Sharpe Ratio Rank: 35
VMFGX Sortino Ratio Rank: 37
VMFGX Omega Ratio Rank: 32
VMFGX Calmar Ratio Rank: 59
VMFGX Martin Ratio Rank: 58

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.

DFDMX vs. VMFGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for DF Dent Midcap Growth Fund (DFDMX) and Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares (VMFGX). 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.

	DFDMX	VMFGX	Difference
Sharpe ratio: Return per unit of total volatility	-0.46	1.39	-1.85
Sortino ratio: Return per unit of downside risk	-0.55	2.04	-2.60
Omega ratio: Gain probability vs. loss probability	0.94	1.24	-0.30
Calmar ratio: Return relative to maximum drawdown	-0.34	2.46	-2.79
Martin ratio: Return relative to average drawdown	-0.63	9.46	-10.10

DFDMX vs. VMFGX - Sharpe Ratio Comparison

The current DFDMX Sharpe Ratio is -0.46, which is lower than the VMFGX Sharpe Ratio of 1.39. The chart below compares the historical Sharpe Ratios of DFDMX and VMFGX, 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

DFDMX vs. VMFGX - Drawdown Comparison

The maximum DFDMX drawdown since its inception was -40.46%, roughly equal to the maximum VMFGX drawdown of -39.15%. Use the drawdown chart below to compare losses from any high point for DFDMX and VMFGX.

Drawdown Indicators

	DFDMX	VMFGX	Difference
Max Drawdown Largest peak-to-trough decline	-40.46%	-39.15%	-1.31%
Max Drawdown (1Y) Largest decline over 1 year	-22.32%	-9.91%	-12.41%
Max Drawdown (3Y) Largest decline over 3 years	-22.32%	-25.45%	+3.13%
Max Drawdown (5Y) Largest decline over 5 years	-40.46%	-29.25%	-11.21%
Max Drawdown (10Y) Largest decline over 10 years	-40.46%	-39.15%	-1.31%
Current Drawdown Current decline from peak	-12.96%	-3.69%	-9.27%
Average Drawdown Average peak-to-trough decline	-8.12%	-5.67%	-2.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	11.79%	2.57%	+9.22%

Volatility

DFDMX vs. VMFGX - Volatility Comparison

DF Dent Midcap Growth Fund (DFDMX) has a higher volatility of 5.30% compared to Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares (VMFGX) at 4.44%. This indicates that DFDMX's price experiences larger fluctuations and is considered to be riskier than VMFGX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DFDMX	VMFGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.30%	4.44%	+0.86%
Volatility (6M) Calculated over the trailing 6-month period	12.93%	13.81%	-0.88%
Volatility (1Y) Calculated over the trailing 1-year period	16.40%	17.56%	-1.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.93%	20.72%	+0.21%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.40%	21.05%	-0.65%

DFDMX vs. VMFGX - Expense Ratio Comparison

DFDMX has a 0.85% expense ratio, which is higher than VMFGX's 0.08% expense ratio.

Dividends

DFDMX vs. VMFGX - Dividend Comparison

DFDMX has not paid dividends to shareholders, while VMFGX's dividend yield for the trailing twelve months is around 0.60%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
DFDMX DF Dent Midcap Growth Fund	0.00%	0.00%	0.00%	0.00%	0.00%	2.79%	0.30%	0.87%	3.52%	0.30%	0.09%	3.21%
VMFGX Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares	0.60%	0.70%	0.84%	1.21%	1.12%	0.53%	0.79%	1.22%	1.18%	0.93%	1.14%	1.14%

Frequently Asked Questions

Can I hold both DFDMX and VMFGX in my portfolio?

DFDMX and VMFGX have a correlation of 0.60, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DFDMX or VMFGX?

DFDMX has higher volatility (5.30%) compared to VMFGX (4.44%). In terms of maximum drawdown, DFDMX dropped -40.46% vs VMFGX's -39.15%.

Which has better risk-adjusted returns?

VMFGX currently has the higher Sharpe Ratio (1.39 vs -0.46), 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.