Sandisk Corporation (NASDAQ: SNDK) delivered record-breaking fiscal fourth-quarter results on August 5 — and the market punished it anyway. The NAND flash memory specialist reported Q4 FY2026 revenue of $8.97 billion, up 371% year-over-year, with adjusted earnings per share of $39.25 that crushed the $34.37 consensus estimate. Data center revenue surged 103% sequentially, fueled by explosive AI-driven storage demand. Despite the blowout numbers, SNDK stock tumbled approximately 13% on Thursday as investors fixated on one thing: the forward guidance.
The issue is Sandisk’s Q1 FY2027 outlook. The company guided revenue of $10.30 billion to $10.80 billion, with the midpoint of $10.55 billion falling short of the FactSet analyst consensus of $10.8 billion — a gap of roughly $250 million that triggered the selloff. This matters especially for a stock that had already surged nearly 490% year-to-date before this report, making SNDK the best performer in the S&P 500 in 2026. Analysts noted that consumer-grade NAND pricing is softening, even as enterprise and AI data center demand continues to surge. Sandisk has secured $16.5 billion in financial guarantees through long-term New Business Models agreements, providing strong multi-year revenue visibility — but investors worried the extraordinary valuation left no room for guidance misses. Adjusted EPS guidance for Q1 2027 of $44–$46 did exceed some estimates, but the top-line revenue shortfall dominated the narrative.
For retail investors, the Sandisk story illustrates a classic high-growth dilemma: exceptional fundamentals can still produce painful short-term losses when valuations price in perfection. The structural case for NAND memory remains intact — AI workloads require enormous storage capacity, and Sandisk is a leading supplier alongside Micron and SK Hynix. The 103% sequential jump in data center revenue is evidence of real demand, not hype. However, the 490% YTD run-up had baked in flawless execution quarter after quarter. If you’re a long-term investor with conviction in the AI storage build-out, the 13% dip may warrant a closer look — but manage position sizing carefully given the valuation remains elevated even after the pullback. Q2 FY2027 results will be the real test of whether this guidance miss was a one-off or the start of a broader deceleration.
