Sandisk, Micron and Seagate lead S&P 500 gainers in 2025

Sandisk, Micron, Seagate, Western Digital and Robinhood were the top S&P 500 gainers in 2025 as tech and communication stocks surged. Investors piled into companies tied to AI, cloud and data storage, helping lift the index about 17% for the year despite weakness in some sectors.