SanDisk's stunning rally hits a speed bump: What triggered the sharp selloff?

SanDisk, one of Wall Street's top-performing stocks in 2026, has corrected sharply as investors booked profits in AI and memory-chip names. The selloff spread across the semiconductor space after Samsung's earnings failed to reassure on future demand, pulling down Micron, Western Digital, Marvell and other chipmakers. Analysts remain constructive long term but are shifting focus from revenue growth to sustainable free cash flow, cautioning that elevated valuations leave the stock vulnerable to further volatility.