Which Vanguard ETF is the Better Buy: Mega-Cap Giant MGK or S&P 500 Powerhouse VOO? | The Motley Fool
Uncover the differences in sector focus, volatility, and income potential between these two Vanguard ETFs to guide your investment strategy.
The Vanguard Mega Cap Growth ETF (MGK) and the Vanguard S&P 500 ETF (VOO) are both designed to provide exposure to large U.S. companies, but they take distinct approaches. MGK tracks the largest growth stocks, while VOO mirrors the entire S&P 500. This comparison reveals key differences in cost, performance, risk, and portfolio construction, helping investors choose the fund that aligns best with their goals.
Snapshot: Cost and Size
Metric | VOO | MGK
Issuer | Vanguard | Vanguard
Expense Ratio | 0.03% | 0.07%
1-Year Return (as of Feb. 2, 2026) | 15.60% | 16.88%
Dividend Yield | 1.13% | 0.35%
Beta (5Y Monthly) | 1.00 | 1.20
AUM | $839 billion | $32 billion
VOO offers a slight cost advantage with a lower expense ratio and a higher dividend yield, making it the more attractive option for income-focused investors.
Performance & Risk Comparison
Metric | VOO | MGK
Max Drawdown (5Y) | -24.53% | -36.02%
Growth of $1,000 Over 5 Years | $1,850 | $1,970
What's Inside
MGK focuses on the largest U.S. growth stocks, holding just 60 stocks. Around 55% of its portfolio is allocated to tech, followed by communication services at 17% and consumer cyclical at 13%. Its top three positions - Nvidia, Apple, and Microsoft - account for nearly 36% of assets. MGK offers focused, long-term exposure to mega-cap growth leaders.
VOO, on the other hand, tracks the S&P 500 and holds 504 stocks, providing broader diversification. Its sector mix is less concentrated, with 35% in technology, 13% in financial services, and 11% in communication services. While VOO's top holdings match MGK's, their combined weight is lower, reflecting VOO's more balanced approach.
What This Means for Investors
Both VOO and MGK focus on large companies, but MGK takes a narrower approach by only including mega-cap stocks, defined as those with market caps of at least $200 billion. This targeted approach carries both risks and rewards. Less diversification can make MGK more susceptible to market swings, as evidenced by its steeper max drawdown and higher beta, suggesting greater price fluctuations.
VOO, with its wider variety of stocks, is slightly more stable. It's less focused on tech stocks, which can help limit volatility, and its assets are more evenly spread across the fund. The two funds share the same top three holdings, but these stocks make up close to 36% of MGK's portfolio compared to around 21% for VOO.
Nvidia, Apple, and Microsoft have performed exceptionally well in recent years, contributing to MGK's higher one- and five-year total returns. However, if these stocks experience a downturn, MGK could be impacted more severely.
Choosing Between VOO and MGK
If you prioritize a well-diversified fund that includes both large- and mega-cap stocks, VOO's broad S&P 500 focus might be the better choice. Conversely, if you prefer a more targeted approach with potentially higher earning potential, MGK could be more appealing.
