VADDX vs. VIMAX

Last updated Jun 24, 2026

VADDX (Invesco Equally-Weighted S&P 500 Fund) and VIMAX (Vanguard Mid-Cap Index Fund Admiral Shares) are both mutual funds - VADDX is a S&P 500 fund tracking the S&P 500 Equal Weight Index, while VIMAX is a Mid Cap Blend Equities fund tracking the CRSP US Mid Cap Index. Both are passively managed. Over the past 10 years, VADDX returned 12.03%/yr vs 12.00%/yr for VIMAX. With a 0.97 correlation, they move nearly in lockstep. VADDX charges 0.27%/yr vs 0.05%/yr for VIMAX.

Performance

VADDX vs. VIMAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Invesco Equally-Weighted S&P 500 Fund (VADDX) and Vanguard Mid-Cap Index Fund Admiral Shares (VIMAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VADDX achieves a 10.27% return, which is significantly lower than VIMAX's 11.32% return. Both investments have delivered pretty close results over the past 10 years, with VADDX having a 12.03% annualized return and VIMAX not far behind at 12.00%.

VADDX

• 1D: 0.14%
• 1M: 1.83%
• YTD: 10.27%
• 6M: 9.36%
• 1Y: 19.29%
• 3Y*: 14.90%
• 5Y*: 8.73%
• 10Y*: 12.03%

VIMAX

• 1D: 0.41%
• 1M: 3.04%
• YTD: 11.32%
• 6M: 10.01%
• 1Y: 18.73%
• 3Y*: 16.58%
• 5Y*: 8.05%
• 10Y*: 12.00%

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

VADDX vs. VIMAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VADDX Invesco Equally-Weighted S&P 500 Fund	10.27%	11.16%	12.68%	13.58%	-11.86%	29.27%	12.56%	28.92%	-7.96%	18.55%
VIMAX Vanguard Mid-Cap Index Fund Admiral Shares	11.32%	11.67%	14.66%	16.53%	-18.70%	24.51%	18.18%	31.03%	-9.24%	19.26%

Correlation

The correlation between VADDX and VIMAX is 0.96 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.96
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (10Y) Calculated over the trailing 10-year period	0.96
Correlation (All Time) Calculated using the full available price history since Nov 12, 2001	0.97

The correlation between VADDX and VIMAX has been stable across timeframes, ranging from 0.96 to 0.97 - a consistent structural relationship.

Return for Risk

VADDX vs. VIMAX — Risk / Return Rank

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

VADDX

VADDX Risk / Return Rank: 44
VADDX Sharpe Ratio Rank: 40
VADDX Sortino Ratio Rank: 40
VADDX Omega Ratio Rank: 36
VADDX Calmar Ratio Rank: 50
VADDX Martin Ratio Rank: 51

VIMAX

VIMAX Risk / Return Rank: 37
VIMAX Sharpe Ratio Rank: 34
VIMAX Sortino Ratio Rank: 32
VIMAX Omega Ratio Rank: 31
VIMAX Calmar Ratio Rank: 44
VIMAX 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.

VADDX vs. VIMAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Equally-Weighted S&P 500 Fund (VADDX) and Vanguard Mid-Cap Index Fund Admiral Shares (VIMAX). 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.

	VADDX	VIMAX	Difference
Sharpe ratio: Return per unit of total volatility	1.72	1.55	+0.17
Sortino ratio: Return per unit of downside risk	2.48	2.21	+0.28
Omega ratio: Gain probability vs. loss probability	1.30	1.27	+0.03
Calmar ratio: Return relative to maximum drawdown	2.60	2.44	+0.16
Martin ratio: Return relative to average drawdown	9.80	9.18	+0.62

VADDX vs. VIMAX - Sharpe Ratio Comparison

The current VADDX Sharpe Ratio is 1.72, which is comparable to the VIMAX Sharpe Ratio of 1.55. The chart below compares the historical Sharpe Ratios of VADDX and VIMAX, 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

VADDX vs. VIMAX - Drawdown Comparison

The maximum VADDX drawdown since its inception was -60.12%, roughly equal to the maximum VIMAX drawdown of -58.88%. Use the drawdown chart below to compare losses from any high point for VADDX and VIMAX.

Drawdown Indicators

	VADDX	VIMAX	Difference
Max Drawdown Largest peak-to-trough decline	-60.12%	-58.88%	-1.24%
Max Drawdown (1Y) Largest decline over 1 year	-7.88%	-8.13%	+0.25%
Max Drawdown (3Y) Largest decline over 3 years	-17.86%	-18.93%	+1.07%
Max Drawdown (5Y) Largest decline over 5 years	-21.58%	-27.55%	+5.97%
Max Drawdown (10Y) Largest decline over 10 years	-39.39%	-39.30%	-0.09%
Current Drawdown Current decline from peak	-1.16%	-0.43%	-0.73%
Average Drawdown Average peak-to-trough decline	-6.99%	-8.10%	+1.11%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.08%	2.16%	-0.08%

Volatility

VADDX vs. VIMAX - Volatility Comparison

The current volatility for Invesco Equally-Weighted S&P 500 Fund (VADDX) is 3.66%, while Vanguard Mid-Cap Index Fund Admiral Shares (VIMAX) has a volatility of 4.36%. This indicates that VADDX experiences smaller price fluctuations and is considered to be less risky than VIMAX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VADDX	VIMAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.66%	4.36%	-0.70%
Volatility (6M) Calculated over the trailing 6-month period	8.77%	9.85%	-1.08%
Volatility (1Y) Calculated over the trailing 1-year period	11.93%	12.79%	-0.86%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.29%	17.69%	-1.40%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.56%	18.95%	-0.39%

VADDX vs. VIMAX - Expense Ratio Comparison

VADDX has a 0.27% expense ratio, which is higher than VIMAX's 0.05% 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

VADDX vs. VIMAX - Dividend Comparison

VADDX's dividend yield for the trailing twelve months is around 9.15%, more than VIMAX's 1.34% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VADDX Invesco Equally-Weighted S&P 500 Fund	9.15%	10.09%	8.88%	4.86%	8.45%	9.92%	6.38%	4.68%	7.13%	2.97%	0.30%	2.98%
VIMAX Vanguard Mid-Cap Index Fund Admiral Shares	1.34%	1.51%	1.48%	1.50%	1.59%	1.11%	1.44%	1.47%	1.82%	1.35%	1.45%	1.47%

Frequently Asked Questions

Can I hold both VADDX and VIMAX in my portfolio?

With a correlation of 0.96, VADDX and VIMAX 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, VADDX or VIMAX?

VIMAX has higher volatility (4.36%) compared to VADDX (3.66%). In terms of maximum drawdown, VADDX dropped -60.12% vs VIMAX's -58.88%.

Which has better risk-adjusted returns?

VADDX currently has the higher Sharpe Ratio (1.72 vs 1.55), 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.