Storage and Infrastructure Stocks Top S&P 500 as AI Data Center Boom Reshapes 2025 Winners

In 2025, storage and infrastructure companies, led by Sandisk's roughly 580% surge, took the top positions in the S&P 500 as AI data center spending accelerated. Traditional AI leaders like Nvidia gained about 40% and slipped to 71st place, while investors rotated toward power, cooling, wiring, construction and even Bitcoin miners pivoting to high-performance computing. Analysts now see more moderate upside for some 2025 winners, with growing attention on names such as Pure Storage, Quanta Services and Vertiv as potential next-stage beneficiaries of AI infrastructure demand.