Which Is the Better Large-Cap ETF, Vanguard's MGK or State Street's SPY?

Robert Izquierdo, The Motley Fool

Sat, April 18, 2026 astatine 9:12 AM CDT 4 min read

The State Street SPDR S&P 500 ETF Trust (NYSEMKT:SPY) and Vanguard Mega Cap Growth ETF (NYSEMKT:MGK) some supply entree to large-cap U.S. stocks, but MGK features a overmuch heavier exertion tilt, higher caller returns, and a notably little output compared to SPY.

Both SPY and MGK purpose to seizure the show of starring U.S. equities, but their approaches differ. SPY tracks the wide S&P 500 Index, offering wide assemblage exposure, portion MGK targets the largest growth-oriented names, resulting successful a much concentrated and tech-heavy portfolio. This examination highlights however those differences play retired successful cost, performance, risk, and portfolio makeup.

Beta measures terms volatility comparative to the S&P 500; beta is calculated from five-year monthly returns. The 1-yr instrumentality represents full instrumentality implicit the trailing 12 months.

MGK is somewhat much affordable connected fees, with an disbursal ratio of 0.05% versus SPY’s 0.09%, but investors springiness up a important magnitude of dividend income: MGK yields conscionable 0.4%, portion SPY yields 1.1%.

MGK tracks a mega-cap maturation index, resulting successful a concentrated portfolio of 69 stocks, with exertion accounting for 54% of assets and dense weights successful connection services and user cyclicals. Its 3 largest holdings — Nvidia (NASDAQ:NVDA), Apple (NASDAQ:AAPL), and Microsoft (NASDAQ:MSFT) — marque up implicit a 3rd of the fund, and its 18.3-year way grounds underscores its staying power. Investors looking for targeted vulnerability to large-cap growth, particularly successful tech, whitethorn find MGK’s attack appealing.

SPY, by contrast, holds implicit 500 companies and provides broader diversification crossed sectors, including important allocations to fiscal services and connection services alongside technology. Its largest positions — Nvidia, Apple, and Microsoft — are akin to MGK’s, but the wide portfolio is much balanced, reducing single-sector hazard compared to MGK’s tech-heavy tilt.

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