Micron stock tops S&P 500 as best performer over past 5 years

Micron Technology has quietly pulled off one of the most remarkable runs in modern market history. Over the past five years, the memory chipmaker has generated total returns between roughly +1,114% and +1,315%, making it the single best-performing stock in the entire S&P 500. To put that in perspective, the S&P 500 itself returned about +82% over the same stretch. Micron didn’t just beat the index. It lapped it thirteen times over. From memory maker to trillion-dollar titan Micron’s market capitalization now sits at approximately $1.15 trillion, with shares trading around $1,017 as of early September 2026. The stock hit a 52-week high of $1,255, which means even after some pullback, the trajectory has been nothing short of parabolic. Micron posted a full-year return of +240% in 2025, then followed it with a year-to-date gain of +256% in 2026. The explosive buildout of AI data centers has created insatiable demand for two products Micron happens to specialize in: DRAM and high-bandwidth memory, commonly known as HBM. These are the memory chips that sit alongside the advanced GPUs powering everything from large language models to autonomous driving systems. That demand surge ...