MGK vs. VOO

Last updated Jun 4, 2026

MGK (Vanguard Mega Cap Growth ETF) and VOO (Vanguard S&P 500 ETF) are both exchange-traded funds - MGK is a Large Cap Growth Equities fund tracking the CRSP US Mega Cap Growth Index, while VOO is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 10 years, MGK returned 19.24%/yr vs 15.56%/yr for VOO. Their correlation of 0.93 suggests significant overlap in exposure. MGK charges 0.05%/yr vs 0.03%/yr for VOO.

Performance

MGK vs. VOO - Performance Comparison

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

Returns By Period

In the year-to-date period, MGK achieves a 10.01% return, which is significantly lower than VOO's 10.91% return. Over the past 10 years, MGK has outperformed VOO with an annualized return of 19.24%, while VOO has yielded a comparatively lower 15.56% annualized return.

MGK

• 1D: -1.13%
• 1M: 7.26%
• YTD: 10.01%
• 6M: 9.45%
• 1Y: 30.01%
• 3Y*: 26.77%
• 5Y*: 16.25%
• 10Y*: 19.24%

VOO

• 1D: -0.70%
• 1M: 5.04%
• YTD: 10.91%
• 6M: 10.93%
• 1Y: 28.04%
• 3Y*: 22.44%
• 5Y*: 13.90%
• 10Y*: 15.56%

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

MGK vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MGK Vanguard Mega Cap Growth ETF	10.01%	20.67%	32.94%	51.67%	-33.59%	28.58%	41.01%	37.38%	-2.91%	29.49%
VOO Vanguard S&P 500 ETF	10.91%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between MGK and VOO 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	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.92
Correlation (All Time) Calculated using the full available price history since Sep 10, 2010	0.93

The correlation between MGK and VOO has been stable across timeframes, ranging from 0.92 to 0.93 - a consistent structural relationship.

MGK vs. VOO - Sectors Allocation Comparison

Sectors	MGK	VOO
Technology	56.1%	35.7%
Communication Services	17.3%	11.3%
Consumer Cyclical	12.8%	10.2%
Healthcare	4.5%	8.5%
Financial Services	4.5%	11.6%
Real Estate	1.3%	1.9%
Utilities	1.2%	2.4%
Industrials	1.1%	8.3%
Basic Materials	0.7%	1.8%
Consumer Defensive	0.4%	4.9%
Energy	-	3.5%

Return for Risk

MGK vs. VOO — Risk / Return Rank

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

MGK

MGK Risk / Return Rank: 45
MGK Sharpe Ratio Rank: 53
MGK Sortino Ratio Rank: 50
MGK Omega Ratio Rank: 50
MGK Calmar Ratio Rank: 35
MGK Martin Ratio Rank: 38

VOO

VOO Risk / Return Rank: 70
VOO Sharpe Ratio Rank: 71
VOO Sortino Ratio Rank: 70
VOO Omega Ratio Rank: 70
VOO Calmar Ratio Rank: 62
VOO Martin Ratio Rank: 75

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.

MGK vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard Mega Cap Growth ETF (MGK) and Vanguard S&P 500 ETF (VOO). 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.

	MGK	VOO	Difference
Sharpe ratio: Return per unit of total volatility	1.86	2.39	-0.53
Sortino ratio: Return per unit of downside risk	2.53	3.25	-0.73
Omega ratio: Gain probability vs. loss probability	1.32	1.43	-0.11
Calmar ratio: Return relative to maximum drawdown	1.79	3.16	-1.38
Martin ratio: Return relative to average drawdown	6.15	14.73	-8.57
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MGK vs. VOO - Sharpe Ratio Comparison

The current MGK Sharpe Ratio is 1.86, which is comparable to the VOO Sharpe Ratio of 2.39. The chart below compares the historical Sharpe Ratios of MGK and VOO, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	MGK	VOO	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.86	2.39	-0.53
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.72	0.83	-0.11
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.88	0.87	+0.01
Sharpe Ratio (All Time) Calculated using the full available price history	0.66	0.89	-0.23

Drawdowns

MGK vs. VOO - Drawdown Comparison

The maximum MGK drawdown since its inception was -47.97%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for MGK and VOO.

Drawdown Indicators

	MGK	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-47.97%	-33.99%	-13.98%
Max Drawdown (1Y) Largest decline over 1 year	-16.85%	-8.90%	-7.95%
Max Drawdown (3Y) Largest decline over 3 years	-23.36%	-18.69%	-4.67%
Max Drawdown (5Y) Largest decline over 5 years	-36.01%	-24.52%	-11.49%
Max Drawdown (10Y) Largest decline over 10 years	-36.01%	-33.99%	-2.02%
Current Drawdown Current decline from peak	-1.43%	-0.70%	-0.73%
Average Drawdown Average peak-to-trough decline	-7.47%	-3.69%	-3.78%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.89%	1.91%	+2.98%

Volatility

MGK vs. VOO - Volatility Comparison

Vanguard Mega Cap Growth ETF (MGK) has a higher volatility of 4.01% compared to Vanguard S&P 500 ETF (VOO) at 2.84%. This indicates that MGK's price experiences larger fluctuations and is considered to be riskier than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MGK	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.01%	2.84%	+1.17%
Volatility (6M) Calculated over the trailing 6-month period	12.37%	8.90%	+3.47%
Volatility (1Y) Calculated over the trailing 1-year period	16.23%	11.80%	+4.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	22.63%	16.81%	+5.82%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.88%	18.01%	+3.87%

MGK vs. VOO - Expense Ratio Comparison

MGK has a 0.05% expense ratio, which is higher than VOO's 0.03% 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

MGK vs. VOO - Dividend Comparison

MGK's dividend yield for the trailing twelve months is around 0.32%, less than VOO's 1.03% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MGK Vanguard Mega Cap Growth ETF	0.32%	0.35%	0.43%	0.50%	0.70%	0.41%	0.65%	0.85%	1.12%	1.23%	1.53%	1.43%
VOO Vanguard S&P 500 ETF	1.03%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both MGK and VOO in my portfolio?

With a correlation of 0.92, MGK and VOO 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, MGK or VOO?

MGK has higher volatility (4.01%) compared to VOO (2.84%). In terms of maximum drawdown, MGK dropped -47.97% vs VOO's -33.99%.

Which ETF is better, MGK or VOO?

On 10-year performance, MGK leads with 19.24% vs 15.56% for VOO. On fees, VOO is cheaper at 0.03% per year. On volatility, VOO has been the lower-risk option at 2.84%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MGK or VOO?

Over the 10-year period, MGK has performed better with a 19.24% return vs 15.56%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MGK or VOO?

VOO is cheaper with a 0.03% expense ratio, compared with 0.05% for MGK.

Which ETF pays a higher dividend yield, MGK or VOO?

VOO has the higher dividend yield at 1.03%, compared with 0.32% for MGK.

What is the main difference between MGK and VOO?

MGK is categorized as Large Cap Growth Equities, while VOO is S&P 500. MGK tracks CRSP US Mega Cap Growth Index, while VOO tracks S&P 500 Index. Their fees differ too: 0.05% for MGK and 0.03% for VOO.

Which has better risk-adjusted returns?

VOO currently has the higher Sharpe Ratio (2.39 vs 1.86), 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.