SanDisk's Two-Speed Market: A Memory Giant Caught Between AI's Promise and a Chip Glut

SanDisk shares halve from €2,000 peak amid NAND oversupply and China threat, but analysts see 82% upside.

The arithmetic is brutal by any standard. A share that changed hands for more than €2,000 in June now trades near €1,070, having surrendered roughly half its value in a matter of weeks. The monthly decline stands at just over 40 percent, and the weekly loss approaches 16 percent. But the most telling number may be the one that hasn't moved at all: the average analyst price target of €1,932.70, which implies an 82 percent rebound from current levels. That gap between what models say and what the market does is the entire story in miniature.

A 21% Spike, Then a Reckoning

The whiplash has been extraordinary even by the standards of a stock that carries an annualized 30-day volatility reading north of 166 percent. Thursday brought a spike of more than 21 percent, fueled by speculative bets on AI-driven demand. Friday delivered a 3.6 percent decline to €1,070, with the secondary report citing a 4.5 percent drop that left the stock at €1,060. Either way, the pattern is unmistakable: euphoria, then doubt, then a scramble for the exits.

The immediate trigger for the latest selling pressure is a supply-chain signal that memory-chip investors have learned to dread. Fresh industry data shows a pronounced inventory overhang in 256-layer NAND flash storage, and spot prices for those chips have collapsed by 12 percent. Supply is outstripping consumer demand, institutional investors are trimming positions, and the macro environment is doing nothing to cushion the fall. SanDisk is not suffering alone — Micron Technology and Apple ranked among the heaviest technology-sector decliners by trading volume on the same session.

The Chinese Question

Beneath the cyclical noise sits a structural concern that analysts are increasingly unwilling to wave away. HSBC's Alastair Pinder points to the fat profit margins that SanDisk and its peers currently enjoy — precisely the kind of margins that invite competition. Beijing, the argument runs, intends to flood the market with cheap, mass-produced memory chips, undercutting Western manufacturers on price and seizing market share.

The IPO of Chinese DRAM maker CXMT, which raised $8.5 billion in a single day to fund expansion, underscores the ambition. SanDisk itself does not make DRAM, so the immediate threat is limited. But if Chinese producers close the gap in NAND as well, the competitive landscape could shift decisively. The market is effectively pricing in that possibility now, before it has fully materialized.

A Boom-Bust Story That Feels Familiar

What makes the current sell-off so unsettling is how quickly it has punctured a narrative that seemed bulletproof. SanDisk's ascent from a spin-off price in the low double digits to over €2,000 rested on a single thesis: AI-driven scarcity in NAND flash. Research firms projected that AI data centers would account for 44 percent of total NAND demand in 2026, with some forecasts pushing that figure to 51 percent by 2027. Hedge funds piled in, retail investors followed, and the stock became a phenomenon.

But memory chips have a long history of boom-and-bust cycles, and skeptics argue this time is no different. Long-term supply contracts, the optimists' favorite defense, are not a panacea. When spot prices fall, customers demand renegotiation, leaving manufacturers with an unpalatable choice: hold the line and risk losing the client, or concede and sacrifice margin. The more the stock falls, the louder that skepticism becomes.

The technical picture offers little comfort. The MACD indicator has flashed a sell signal, the Williams %R points to oversold conditions, and the RSI sits at roughly 40.8 — neutral territory that suggests the selling may not be finished. The stock marked a 52-week low of €870 on July 30, and currently trades about 23 percent above that floor. The options market is pricing in a move of roughly 25 percent around the upcoming earnings report — a level of implied uncertainty that speaks for itself.

What Comes Next

Two dates now dominate the calendar. On August 5, 2026, SanDisk reports fourth-quarter and full-year results, with the conference call scheduled for 1:30 p.m. Pacific Time. A week later, on August 13, the company hosts an investor day. Between them, these events should reveal whether the "structural, not cyclical" argument holds up under scrutiny.

There is at least one stabilizing development on the operational side. Kioxia and SanDisk have extended their joint manufacturing partnership at the Yokkaichi facility by five years, securing the production base for SanDisk's flash chips well into the future. It is a reminder that the company's underlying assets remain intact, even as its stock price gyrates.

The market is currently negotiating between two competing stories: a NAND oversupply that is crushing prices, and a long-term demand surge from AI data centers that could make today's prices look cheap in retrospect. A 40 percent monthly decline in a stock that multiplied severalfold over the past year is not necessarily a verdict on the underlying thesis. It is, however, the first real test of who genuinely believes the story — and who was simply riding the wave. The weeks after August 5 will provide the answer.