VMGIX vs. VOOG

Last updated Apr 2, 2026

Compare and contrast key facts about Vanguard Mid-Cap Growth Index Fund (VMGIX) and Vanguard S&P 500 Growth ETF (VOOG).

VMGIX is managed by Vanguard. It was launched on Aug 17, 2006. VOOG is a passively managed fund by Vanguard that tracks the performance of the S&P 500 Growth Index. It was launched on Apr 5, 2019.

Performance

VMGIX vs. VOOG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Vanguard Mid-Cap Growth Index Fund (VMGIX) and Vanguard S&P 500 Growth ETF (VOOG). The values are adjusted to include any dividend payments, if applicable.

VMGIX vs. VOOG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VMGIX Vanguard Mid-Cap Growth Index Fund	-7.63%	10.56%	15.51%	23.79%	-28.93%	20.32%	34.30%	33.69%	-5.73%	21.72%
VOOG Vanguard S&P 500 Growth ETF	-6.97%	22.11%	35.89%	29.96%	-29.48%	31.95%	33.35%	30.93%	-0.21%	27.19%

Returns By Period

In the year-to-date period, VMGIX achieves a -7.63% return, which is significantly lower than VOOG's -6.97% return. Over the past 10 years, VMGIX has underperformed VOOG with an annualized return of 10.49%, while VOOG has yielded a comparatively higher 15.86% annualized return.

VMGIX

• 1D: 3.15%
• 1M: -7.32%
• YTD: -7.63%
• 6M: -12.16%
• 1Y: 5.14%
• 3Y*: 10.34%
• 5Y*: 3.91%
• 10Y*: 10.49%

VOOG

• 1D: 1.30%
• 1M: -4.28%
• YTD: -6.97%
• 6M: -5.29%
• 1Y: 23.21%
• 3Y*: 22.32%
• 5Y*: 12.46%
• 10Y*: 15.86%

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

VMGIX vs. VOOG - Expense Ratio Comparison

VMGIX has a 0.19% expense ratio, which is higher than VOOG's 0.07% 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%.

VMGIX

Vanguard Mid-Cap Growth Index Fund

VOOG

Vanguard S&P 500 Growth ETF

Return for Risk

VMGIX vs. VOOG — Risk / Return Rank

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

VMGIX

VMGIX Risk / Return Rank: 11
VMGIX Sharpe Ratio Rank: 10
VMGIX Sortino Ratio Rank: 10
VMGIX Omega Ratio Rank: 10
VMGIX Calmar Ratio Rank: 13
VMGIX Martin Ratio Rank: 12

VOOG

VOOG Risk / Return Rank: 62
VOOG Sharpe Ratio Rank: 57
VOOG Sortino Ratio Rank: 61
VOOG Omega Ratio Rank: 60
VOOG Calmar Ratio Rank: 67
VOOG Martin Ratio Rank: 66

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.

VMGIX vs. VOOG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Mid-Cap Growth Index Fund (VMGIX) and Vanguard S&P 500 Growth ETF (VOOG). 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.

	VMGIX	VOOG	Difference
Sharpe ratio Return per unit of total volatility	0.28	1.05	-0.77
Sortino ratio Return per unit of downside risk	0.54	1.62	-1.08
Omega ratio Gain probability vs. loss probability	1.07	1.23	-0.16
Calmar ratio Return relative to maximum drawdown	0.38	1.76	-1.38
Martin ratio Return relative to average drawdown	1.18	6.81	-5.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VMGIX vs. VOOG - Sharpe Ratio Comparison

The current VMGIX Sharpe Ratio is 0.28, which is lower than the VOOG Sharpe Ratio of 1.05. The chart below compares the historical Sharpe Ratios of VMGIX and VOOG, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	VMGIX	VOOG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.28	1.05	-0.77
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.18	0.59	-0.41
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.50	0.77	-0.27
Sharpe Ratio (All Time) Calculated using the full available price history	0.41	0.84	-0.43

Correlation

The correlation between VMGIX and VOOG is 0.88, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

VMGIX vs. VOOG - Dividend Comparison

VMGIX's dividend yield for the trailing twelve months is around 0.58%, more than VOOG's 0.53% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VMGIX Vanguard Mid-Cap Growth Index Fund	0.58%	0.52%	0.56%	0.60%	0.64%	0.23%	0.46%	0.67%	0.70%	0.61%	0.70%	0.69%
VOOG Vanguard S&P 500 Growth ETF	0.53%	0.49%	0.49%	1.12%	0.93%	0.53%	0.88%	1.26%	1.34%	1.32%	1.47%	1.56%

Drawdowns

VMGIX vs. VOOG - Drawdown Comparison

The maximum VMGIX drawdown since its inception was -60.20%, which is greater than VOOG's maximum drawdown of -32.73%. Use the drawdown chart below to compare losses from any high point for VMGIX and VOOG.

Drawdown Indicators

	VMGIX	VOOG	Difference
Max Drawdown Largest peak-to-trough decline	-60.20%	-32.73%	-27.47%
Max Drawdown (1Y) Largest decline over 1 year	-15.99%	-13.71%	-2.28%
Max Drawdown (5Y) Largest decline over 5 years	-37.25%	-32.73%	-4.52%
Max Drawdown (10Y) Largest decline over 10 years	-37.25%	-32.73%	-4.52%
Current Drawdown Current decline from peak	-13.35%	-9.07%	-4.28%
Average Drawdown Average peak-to-trough decline	-10.06%	-5.01%	-5.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.12%	3.54%	+1.58%

Volatility

VMGIX vs. VOOG - Volatility Comparison

The current volatility for Vanguard Mid-Cap Growth Index Fund (VMGIX) is 6.48%, while Vanguard S&P 500 Growth ETF (VOOG) has a volatility of 7.28%. This indicates that VMGIX experiences smaller price fluctuations and is considered to be less risky than VOOG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VMGIX	VOOG	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.48%	7.28%	-0.80%
Volatility (6M) Calculated over the trailing 6-month period	12.41%	12.68%	-0.27%
Volatility (1Y) Calculated over the trailing 1-year period	21.08%	22.28%	-1.20%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.40%	21.16%	+0.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.93%	20.65%	+0.28%