Shares shifted sharply lower as SanDisk (SNDK) dropped 8.7% to $2,130.83 on June 26, erasing roughly $8.7 billion in market value just one day after the stock's best session of the year — a 21.5% surge ignited by Micron's blowout earnings. Citi had raised its price target to $2,500 from $2,025, and SNDK had rallied approximately 4,800% over the past 12 months on AI-driven NAND demand. The giveback is textbook profit-taking on a stock that has become the single most volatile name in the S&P 500.
A Micron Blowout Lit the Fuse — But the Gains Were Borrowed
Micron guided for approximately $50 billion in fiscal Q4 revenue, crushing the $43.2 billion analyst consensus. That news validated the AI memory shortage and sent every memory stock soaring. But from June 1 to June 25, SNDK ripped from around $1,761 to $2,314 with multiple 5–10% daily swings. After a move that fast, even bullish traders will sell first and re-evaluate later.
The Business Is Real, but the Price Tag Is Stretched
SanDisk booked about $5.95 billion in quarterly revenue and $3.62 billion in net income, translating into profit margins near 34%.
The forward P/E ratio — a measure of how much investors pay per dollar of expected future earnings — is 12.37, suggesting analysts expect dramatic earnings growth ahead. Yet the trailing P/E ratio is 79.29, significantly higher than its five-year median of 33.21. That gap means the stock only works if explosive profit growth actually materializes.
Insiders Are Selling Into the Hype
Insiders have sold $8.9 million worth of shares over the past three months with zero insider purchases — a red flag for a stock being pitched as a long-term AI infrastructure winner. Eighteen of 22 analysts rate SNDK a "Buy," with only three at "Hold" and one at "Sell," but the insider behavior suggests those closest to the business see current prices as a selling opportunity.
NAND Is Still Cyclical — That Risk Hasn't Disappeared
Industry-wide NAND supply is projected to grow roughly 20% in 2026, and any slowdown in hyperscaler spending — currently earmarked at over $725 billion in combined AI data-center capital expenditure — could reprice the entire memory sector overnight. A rally driven 80% by business fundamentals and 20% by momentum can still experience a 30–40% correction without the underlying business deteriorating at all.
For shareholders, today's pullback is healthy if the AI memory cycle holds. If it doesn't, an $80 trailing P/E leaves very little margin for error.