The five biggest stock winners of the year and what drove their big gains
CNBC••entertainment
Key Points:
- The top five best-performing S&P 500 stocks in 2025 were Western Digital, Micron Technology, Seagate Technology, Robinhood, and Warner Bros Discovery, significantly outperforming the index's 17.3% gain.
- Western Digital, Micron, and Seagate benefited from soaring demand and shortages in DRAM memory chips driven by the AI boom, with prices expected to rise another 40% through mid-2026.
- Robinhood saw strong growth fueled by retail traders capitalizing on market pullbacks and expanded its offerings to include prediction markets, earning a buy rating from Truist for its product innovation and customer base expansion.
- Warner Bros Discovery's stock surged over 170% amid acquisition interest, notably
