SanDisk Surges 499% YTD to $1,427 Leading S&P 500; Intel, Seagate Follow

The S&P 500 trades near all-time highs, up roughly 8% YTD in 2026, with performance diverging sharply toward AI-driven storage and semiconductors. SanDisk (SNDK) leads with a 498.64% YTD explosion to $1,427.10—up 3,792.8% over 12 months—followed by Intel (INTC) +209.20% to $114.09 surpassing its dot-com ATH, and Seagate (STX) +183.53% to $780.83. This extends earlier rallies from the March 30 low, where Intel gained 173.8%, SanDisk 146.1%, and others like AMD 114.8%, underscoring concentrated upside amid broader index gains.