SanDisk (NASDAQ: SNDK) was the day’s standout AI-memory winner on Wednesday, June 25, 2026, jumping as much as 21.5% intraday before profit-taking trimmed the gain. The catalyst was not a company-specific filing — it was the read-across from Micron Technology‘s blowout fiscal Q3 print after Tuesday’s close, which reset expectations for everyone selling DRAM, NAND, or the tools that make them.
The Micron print that reset the bar
Micron reported fiscal Q3 2026 revenue of $41.5 billion, up 346% year-over-year and 74% sequentially, against a Street consensus near $35.6 billion. Non-GAAP earnings per share came in at $25.11, beating the $20.20 consensus by 24%. Non-GAAP gross margin hit 84.9%, a new company record and roughly 10 points higher than the prior quarter.
The forward look was just as aggressive. Management guided fiscal Q4 revenue to $50 billion plus or minus $1 billion, gross margin to roughly 86%, and EPS to $31 plus or minus $1. Data center revenue exceeded $25 billion in the quarter, which CFO commentary framed as an annualized run rate above $100 billion. Micron stock closed Wednesday at $1,213.56, up 15.7% on the session, even as some after-hours profit-taking shaved another point off.
| Micron Q3 FY26 metric | Reported | Consensus / Prior Year |
|---|---|---|
| Revenue | $41.5B | $35.6B (est.) |
| Non-GAAP EPS | $25.11 | $20.20 (est.) |
| Non-GAAP gross margin | 84.9% | ~75% prior qtr |
| DRAM revenue | $31.3B | +343% YoY |
| NAND revenue | $9.9B | +361% YoY |
| Q4 FY26 revenue guide | $50B ± $1B | ~$42B (prior est.) |
| Q4 FY26 EPS guide | $31 ± $1 | ~$22 (prior est.) |
Why SanDisk moved harder than Micron
Micron sells DRAM and HBM. SanDisk is the pure-play NAND name, and pure-plays move on read-across. When the cycle leader prints record numbers and guides higher, the leveraged proxy gets the bigger percentage move — especially when the proxy already has a heavy retail and momentum following.
SanDisk’s own most recent quarter underscored why the leverage works. The company reported fiscal Q3 2026 revenue of $5.95 billion, up 251% year-over-year, with non-GAAP EPS of $23.41 swinging from a $0.30 loss in the prior-year period. Data center revenue jumped 645% YoY to $1.46 billion. Non-GAAP gross margin reached 78.4%, versus 22.7% a year earlier. Management guided fiscal Q4 revenue to $7.75–$8.25 billion with EPS of $30–$33.
The structural change is the contract book. Per the same Q3 disclosures, SanDisk has shifted a meaningful portion of supply onto multi-year, fixed-price Strategic Customer Agreements rather than spot-market sales. That mirrors Micron, which disclosed 16 strategic customer agreements in its Q3 release. Locked pricing is the difference between this cycle and the last one, when capacity additions instantly compressed margins.
The semicap complex caught a bid too
The read-across did not stop at the memory makers. Anything that sells equipment to a fab or supplies materials to one rallied. Applied Materials (AMAT) finished up 13.4%, Teradyne (TER) added 10.5%, Ultra Clean Holdings (UCTT) gained 11.3%, MaxLinear (MXL) rose 11.2%, Allegro MicroSystems (ALGM) added 8.6%, and Corning (GLW), the optical-glass supplier into AI data center buildout, climbed 10.4%.
The whipsaw is the warning
SanDisk did not hold the highs. After ripping 21% in the first two hours of trading, the stock whipsawed back as fast-money traders rang the register. Names that compound 200%-plus year-to-date attract a particular kind of marginal buyer, and when those buyers all reach for the exit at once the tape gets disorderly.
That dynamic explains why TIKR’s reported wall-of-money rotation into SanDisk earlier in 2026 — when the stock was up 259% by late April — has not translated into a smooth uptrend. The retail bid is real, but it is also concentrated and impatient.
The bear case has not gone away
Memory has always been a cyclical business. The numbers Micron and SanDisk are putting up — 80%-plus gross margins, triple-digit revenue growth — sit at the high end of any historical comparison. The bear thesis is that fixed-price strategic agreements extend the cycle but do not eliminate it, and that the second every fab ribbon-cutting headline appears, the trade unwinds. The fact that the Wall Street average price target on SanDisk sits below the current share price even after analysts have been raising targets all year tells you the sell side is not all-in on the run.
What changed with Micron’s print is the visibility window. Q4 FY26 guidance of $50 billion in revenue and roughly 86% gross margin is not a “trust us” number — it is contracted backlog. That extends the cycle’s runway materially, and that is why the leverage names ran. Whether the leverage names hold the gains is a question about positioning and patience, not about the underlying memory cycle.
Sources
- Micron Technology — SEC Form 8-K filings (CIK 0000723125)
- MarketBeat — Micron Q3 FY26 earnings report (June 24, 2026)
- Barchart — SanDisk Q3 results and 2026 stock performance
- TradingKey — SanDisk and Micron AI memory analysis
- TIKR — SanDisk 2026 YTD performance and Q2 FY26 details
- StocksToTrade — SanDisk intraday whipsaw, June 25, 2026
Disclosure: This article was produced with AI assistance and reviewed before publication. It is for informational purposes only and is not investment advice.