SanDisk Corp. (SNDK) experienced a significant post-market surge, with shares climbing 5.17% 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."

SanDisk's joint venture with Kioxia provides a manufacturing cost advantage, enhancing its pricing power during supply shortages. The company recently reported strong Q4 earnings of $803 million in profit on $3.03 billion revenue, representing substantial growth from the prior year. Additionally, SanDisk's shift toward multi-year, firm-price contracts signals management confidence in sustained demand and elevated pricing.