SanDisk Corp. (SNDK) experienced a significant post-market surge, with shares climbing 5.03% after the regular trading session closed. This upward movement follows a volatile intraday session where the stock was among the market's bottom performers.

The post-market rally appears driven by renewed investor confidence in SanDisk's positioning within the artificial intelligence infrastructure buildout. According to market analysis, the company has benefited from surging AI-related demand for flash memory and tight NAND supply conditions, creating what some analysts describe as a "flash memory supercycle."

Additionally, chip and storage shares rallied in after-hours trading after Alphabet (Google) said capital expenditure could as much as double this year, as the company deepens investments to push ahead in the AI race. This announcement has boosted sentiment toward semiconductor and memory companies like SanDisk that are key suppliers for AI data centers.