Key Points Vanguard Mega Cap Growth ETF charges a lower expense ratio than Invesco QQQ Trust, Series 1, but QQQ is significantly larger and more liquid. QQQ holds more stocks and offers slightly higher sector exposure to communication services, while both funds are heavily tech-weighted. Recent performance and risk metrics for both ETFs are similar, with MGK showing a marginally higher five-year return and drawdown. These 10 stocks could mint the next wave of millionaires › Both the Vanguard Mega ...