Vanguard Growth ETFs Compared: Should You Go for Megacap or Small-Cap Growth Stocks to Finish Out 2026?

Vanguard Morningstar Mega Cap Growth ETF (MGK) and Vanguard Morningstar Small-Cap Growth ETF (VBK) both offer low-cost growth exposure at 0.05% expense ratios but with different strategies. MGK focuses on large tech giants with 72% technology concentration and delivered stronger 5-year returns ($1,882 on $1,000), while VBK provides broader diversification across 543 holdings with better 1-year performance (23.4% vs 17.5%) and higher dividend yield. The choice depends on portfolio foundation needs versus diversification and upside potential.