WFDDX vs. VMFGX

Last updated Jun 26, 2026

WFDDX (Allspring Discovery SMID Cap 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, WFDDX returned 13.56%/yr vs 12.03%/yr for VMFGX. Their correlation of 0.89 suggests significant overlap in exposure. WFDDX charges 1.11%/yr vs 0.08%/yr for VMFGX.

Performance

WFDDX vs. VMFGX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Allspring Discovery SMID Cap Growth Fund (WFDDX) 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

The year-to-date returns for both investments are quite close, with WFDDX having a 18.36% return and VMFGX slightly higher at 18.90%. Over the past 10 years, WFDDX has outperformed VMFGX with an annualized return of 13.56%, while VMFGX has yielded a comparatively lower 12.03% annualized return.

WFDDX

• 1D: 1.02%
• 1M: 3.82%
• YTD: 18.36%
• 6M: 15.09%
• 1Y: 24.43%
• 3Y*: 16.05%
• 5Y*: 0.30%
• 10Y*: 13.56%

VMFGX

• 1D: 0.30%
• 1M: 0.90%
• YTD: 18.90%
• 6M: 16.25%
• 1Y: 29.62%
• 3Y*: 17.91%
• 5Y*: 8.20%
• 10Y*: 12.03%

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

WFDDX vs. VMFGX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WFDDX Allspring Discovery SMID Cap Growth Fund	18.36%	5.51%	18.05%	20.25%	-37.83%	-6.10%	61.81%	61.34%	-6.95%	29.27%
VMFGX Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares	18.90%	7.43%	15.86%	17.42%	-18.99%	18.83%	22.61%	26.20%	-10.39%	19.87%

Correlation

The correlation between WFDDX and VMFGX is 0.92, 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	0.92
Correlation (3Y) Calculated over the trailing 3-year period	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (10Y) Calculated over the trailing 10-year period	0.88
Correlation (All Time) Calculated using the full available price history since Jan 3, 2012	0.89

The correlation between WFDDX and VMFGX has been stable across timeframes, ranging from 0.88 to 0.92 - a consistent structural relationship.

Return for Risk

WFDDX vs. VMFGX — Risk / Return Rank

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

WFDDX

WFDDX Risk / Return Rank: 24
WFDDX Sharpe Ratio Rank: 21
WFDDX Sortino Ratio Rank: 22
WFDDX Omega Ratio Rank: 20
WFDDX Calmar Ratio Rank: 26
WFDDX Martin Ratio Rank: 29

VMFGX

VMFGX Risk / Return Rank: 56
VMFGX Sharpe Ratio Rank: 46
VMFGX Sortino Ratio Rank: 46
VMFGX Omega Ratio Rank: 41
VMFGX Calmar Ratio Rank: 74
VMFGX Martin Ratio Rank: 72

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.

WFDDX vs. VMFGX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Allspring Discovery SMID Cap Growth Fund (WFDDX) 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.

	WFDDX	VMFGX	Difference
Sharpe ratio: Return per unit of total volatility	1.07	1.65	-0.58
Sortino ratio: Return per unit of downside risk	1.60	2.37	-0.77
Omega ratio: Gain probability vs. loss probability	1.19	1.29	-0.10
Calmar ratio: Return relative to maximum drawdown	1.57	2.91	-1.34
Martin ratio: Return relative to average drawdown	5.73	11.48	-5.74

WFDDX vs. VMFGX - Sharpe Ratio Comparison

The current WFDDX Sharpe Ratio is 1.07, which is lower than the VMFGX Sharpe Ratio of 1.65. The chart below compares the historical Sharpe Ratios of WFDDX 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

WFDDX vs. VMFGX - Drawdown Comparison

The maximum WFDDX drawdown since its inception was -59.22%, which is greater than VMFGX's maximum drawdown of -39.15%. Use the drawdown chart below to compare losses from any high point for WFDDX and VMFGX.

Drawdown Indicators

	WFDDX	VMFGX	Difference
Max Drawdown Largest peak-to-trough decline	-59.22%	-39.15%	-20.07%
Max Drawdown (1Y) Largest decline over 1 year	-14.77%	-9.91%	-4.86%
Max Drawdown (3Y) Largest decline over 3 years	-27.05%	-25.45%	-1.60%
Max Drawdown (5Y) Largest decline over 5 years	-59.22%	-29.25%	-29.97%
Max Drawdown (10Y) Largest decline over 10 years	-59.22%	-39.15%	-20.07%
Current Drawdown Current decline from peak	-21.17%	-1.32%	-19.85%
Average Drawdown Average peak-to-trough decline	-16.28%	-5.69%	-10.59%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.03%	2.50%	+1.53%

Volatility

WFDDX vs. VMFGX - Volatility Comparison

Allspring Discovery SMID Cap Growth Fund (WFDDX) has a higher volatility of 7.64% compared to Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares (VMFGX) at 5.82%. This indicates that WFDDX'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

	WFDDX	VMFGX	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.64%	5.82%	+1.82%
Volatility (6M) Calculated over the trailing 6-month period	17.74%	13.74%	+4.00%
Volatility (1Y) Calculated over the trailing 1-year period	21.67%	17.46%	+4.21%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.46%	20.70%	+12.76%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	29.29%	21.07%	+8.22%

WFDDX vs. VMFGX - Expense Ratio Comparison

WFDDX has a 1.11% expense ratio, which is higher than VMFGX's 0.08% expense ratio.

Dividends

WFDDX vs. VMFGX - Dividend Comparison

WFDDX's dividend yield for the trailing twelve months is around 14.50%, more than VMFGX's 0.59% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VMFGX Vanguard S&P Mid-Cap 400 Growth Index Fund Institutional Shares	0.59%	0.70%	0.84%	1.21%	1.12%	0.53%	0.79%	1.22%	1.18%	0.93%	1.14%	1.14%
WFDDX Allspring Discovery SMID Cap Growth Fund	14.50%	17.17%	9.33%	0.00%	1.35%	36.45%	4.93%	26.87%	19.12%	17.95%	1.32%	8.92%

Frequently Asked Questions

Can I hold both WFDDX and VMFGX in my portfolio?

With a correlation of 0.92, WFDDX and VMFGX 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, WFDDX or VMFGX?

WFDDX has higher volatility (7.64%) compared to VMFGX (5.82%). In terms of maximum drawdown, WFDDX dropped -59.22% vs VMFGX's -39.15%.

Which has better risk-adjusted returns?

VMFGX currently has the higher Sharpe Ratio (1.65 vs 1.07), 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.