SanDisk Corporation (NASDAQ: SNDK) posted a monthly Relative Strength Index reading above 99, which analyst Lark Davis said no publicly traded stock has ever reached. The move comes as SNDK shares are up more than 780% year-to-date in 2026 and over 5,400% since spinning off from Western Digital in February 2025, according to BeInCrypto, with the stock trading near $2,138 versus an IPO price of about $38.50.

BeInCrypto said SanDisk, now a pure-play NAND and SSD company, has benefited from hyperscaler AI infrastructure spending, with revenue up 251% year-over-year in its most recent quarter, while the extreme momentum has fueled debate over AI bubble risks.