MPLX LP outperforms QQQ with 225% return in 5 years, driven by stable fee-based cash flows and strong distribution growth.

MPLX LP, a midstream energy partnership majority-owned by Marathon Petroleum, has delivered a 225% return over the past five years, outperforming the Invesco QQQ Trust's 97% return. Its fee-based business model, which earns revenue from hydrocarbon volumes rather than commodity prices, provides steady cash flows and supports a 7.4% yield with committed 12.5% annual distribution growth through 2027. However, investors face tax complexities from K-1 forms, concentration risk due to Marathon's ownership and customer role, and rising leverage. MPLX suits taxable accounts seeking high yield and growth from energy infrastructure, but its cyclical nature means timing matters for returns.