SanDisk Corp put out Q4 results that beat Wall Street on both revenue and earnings, yet the stock sits sharply lower in pre-market trading, leaving a few raised eyebrows.
The SanDisk stock price (NASDAQ: SNDK) is down 9.2% in pre-market at $1226, despite the company posting a substantial beat on key metrics, with guidance the key driver of the move. The selloff underscores a familiar pattern in high-growth technology names: when expectations run far ahead of fundamentals, even strong results can trigger profit-taking if the outlook fails to match the trajectory already embedded in valuations.
The stock had previously jumped more than 3000% over the past year, making it one of the standout performers in the semiconductor and AI-storage complex leading in, and whilst the pullback is approaching double digits, longer term holders will still be sitting on healthy gains.
What Did SanDisk Report?
SanDisk closed fiscal year 2026 with fourth-quarter revenue of US$8.97 billion, exceeding the consensus estimate of US$8.6 billion by roughly 4%. The figure represents a staggering 372% increase year-over-year, reflecting the company’s position at the nexus of surging AI infrastructure demand and a cyclical tightening in high-value NAND flash supply.
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Adjusted earnings per share came in at US$39.25, well ahead of the US$34.45 consensus and marking a 68% sequential increase from the prior quarter. The 14% earnings beat was driven in part by continued margin expansion: adjusted gross margin reached 84.6%, comfortably above the 81.5% estimate and up 58.2 percentage points year-over-year. The margin profile reflects both favourable pricing dynamics in enterprise solid-state drives and operational leverage as SanDisk scales production of advanced flash architectures tailored for AI workloads.
Revenue performance varied sharply across end markets.
Datacenter revenue surged 103% quarter-on-quarter to US$2.98 billion, fuelled by hyperscaler orders for high-bandwidth storage used in training and inference clusters. The Edge segment, encompassing automotive, industrial, and IoT applications, jumped 392% year-over-year to US$5.43 billion, underscoring the broadening adoption of AI capabilities beyond the cloud.
Consumer revenue, by contrast, declined 5% year-over-year to US$556 million, a reminder that SanDisk’s growth story is now almost entirely a function of enterprise and embedded markets.
Guidance Driving The Move
The catalyst for the after-hours decline was SanDisk’s first-quarter fiscal 2027 revenue guidance of US$10.3 billion to US$10.8 billion, which at the midpoint falls roughly 5% short of the US$11.1 billion consensus estimate. Adjusted earnings per share guidance of US$44 to US$46 landed broadly in line with expectations, but markets focused squarely on the revenue miss.
For a company that has consistently delivered upside surprises throughout the AI-driven upcycle, the softer outlook raised questions about whether the most explosive phase of growth is normalising. While the sequential step-up from US$8.97 billion to a midpoint of US$10.55 billion still represents robust expansion, it was insufficient to satisfy expectations that had been ratcheted higher with each successive quarter.
The company also announced a new US$14 billion share buyback authorisation, lifting total remaining capacity to US$15.5 billion. The move signals management confidence in long-term cash generation, yet it did little to offset the immediate focus on forward revenue.
What Next for SNDK?
Looking ahead, the debate centres on whether SanDisk is experiencing a temporary air pocket in an otherwise durable secular growth story, or whether the company is approaching a cyclical peak that will pressure both earnings and valuation multiples.
Bulls emphasise that AI infrastructure spending remains in its early innings, with datacenter and edge deployments set to drive demand for high-performance storage for years to come. The company’s 84% gross margins, while elevated, are seen as reflective of genuine product differentiation and tight supply-demand dynamics that could persist longer than sceptics expect.
Bears counter that the combination of sky-high margins, a guidance miss, and intensifying competition from well-capitalised rivals creates a challenging setup for further multiple expansion. They point to the inherently cyclical and competitive nature of the NAND industry, where periods of acute shortage and pricing power are historically followed by capacity additions and margin compression. With 95% of SanDisk’s market capitalisation arguably tied to a “de-commoditisation” thesis for AI storage, any signs that the industry is reverting to more normal competitive dynamics could weigh heavily on the stock.
Once again we have the classic beat on top and bottom lines, only for a guidance miss to set off a wave of selling overnight. Heading into the open down 9.2% will not be what SNDK holders envisioned last night, yet after a run that remains more than 300% higher YTD, a little perspective is called for.
