SanDisk's $14 Billion Buyback Is a Bet That the AI Storage Story Is Bigger Than One Weak Quarter

SanDisk's blowout Q4 and record margins fail to offset weak Q1 guidance, sending shares down 31% in a month despite analyst Buy ratings.

The arithmetic of SanDisk's current situation is genuinely strange. The company just posted a fourth-quarter revenue figure of $8.97 billion — up 51 percent sequentially — and a beat on the bottom line that was anything but marginal. Adjusted earnings per share of $39.25 came in comfortably ahead of the $34.59 consensus. And yet the market's response was immediate and unforgiving: a 5.31 percent drop in regular trading, followed by another 7.07 percent slide after hours. Two sessions later, the selling had not abated, with the stock closing Friday at €1,050.00, down 4.55 percent on the day.

The damage over the past month is stark. SanDisk shares have shed 30.92 percent in 30 days, leaving them 49.03 percent below the 52-week high of €2,060.00 touched in June. At the July 30 low of €870.00, the stock had lost even more ground before staging a partial recovery of 20.69 percent. Even after that bounce, the shares remain 29.49 percent beneath their 50-day moving average of €1,489.20. The annualized volatility reading of 154.05 percent tells its own story about how violently this name can swing.

A business firing on all cylinders, a stock that won't cooperate

The disconnect between the operational narrative and the share price is hard to overstate. For the full fiscal year 2026, SanDisk generated $20.25 billion in revenue, a 175 percent surge from the prior year. The data center segment — the engine of the AI infrastructure buildout — grew 437 percent year over year to $5.15 billion, with the fourth quarter alone contributing $2.98 billion, up 103 percent sequentially. Gross margin hit a record 84.6 percent in the quarter, a level of pricing power that few semiconductor companies can approach. Net income of $6.9 billion in the final quarter stands in sharp contrast to the loss posted in the same period a year earlier.

So why the rout? The answer, as is so often the case in this market, lies in the guidance. SanDisk's outlook for the first quarter of fiscal 2027 calls for revenue between $10.30 billion and $10.80 billion, with adjusted earnings per share of $44.00 to $46.00. Those numbers are strong in absolute terms — but they were evidently not strong enough for a market that had priced in an uninterrupted acceleration. The concern, articulated by several analysts, is that NAND pricing is beginning to soften and that gross margins may have peaked. Growth, it seems, is no longer the question; the trajectory of pricing power is.

Wall Street trims targets but holds its ground

The analyst response on Thursday was notable for what it did not include: very few downgrades. Jefferies' Blayne Curtis slashed his price target from $3,000 to $1,750 but kept a Buy rating, citing the softening NAND pricing environment and a weaker margin outlook. Evercore ISI's Amit Daryanani trimmed his target from $3,100 to $2,800 while maintaining Outperform. Citi's Asiya Merchant moved her target from $2,500 to $2,100, describing a "more muted" pricing outlook for the September quarter, yet held her Buy. Wells Fargo was more cautious, cutting from $1,620 to $1,400 with an Equal Weight rating, citing valuation concerns after the recent run. Morgan Stanley's Joseph Moore, meanwhile, reaffirmed Overweight with a $1,750 target, arguing that NAND demand remains robust despite the cautious near-term forecast.

The consensus price target stands at €1,918.26, implying upside of roughly 82.7 percent from Friday's close. That gap between where analysts see the stock and where it trades suggests the market is pricing in a scenario that the sell-side, at least in aggregate, does not fully endorse.

A $14 billion statement of confidence

Amid the turmoil, the board has authorized an additional $14 billion share repurchase program, lifting total remaining authorization to $15.5 billion. For a company whose stock has been under sustained pressure, that is a meaningful signal — management is putting capital behind its own conviction. Since the April earnings call, SanDisk has also signed five additional agreements under its "New Business Model," three with new customers and two expanding existing partnerships.

The strategic calendar, however, may hold the more consequential catalyst. On August 3, SanDisk and SK hynix jointly published the technical specification for High Bandwidth Flash (HBF) through the Open Compute Project — a memory technology designed specifically for AI inference workloads. Google and Tenstorrent have since joined the consortium, which began its work in February. On August 13, SanDisk hosts an analyst day in New York, where management is expected to detail the HBF technology, an updated technology roadmap, and the long-term AI storage opportunity.

The company has also been quietly broadening its consumer footprint, launching the officially licensed Optimus GX C50 storage expansion for the Xbox with up to 2 terabytes of capacity — a reminder that the portfolio extends well beyond the data center.

The tension at the heart of the story

What makes SanDisk's situation so unusual is the coexistence of two seemingly contradictory narratives. One is a stock that has lost nearly a third of its value in a month, sitting well below its key moving averages, with a relative strength index of 41.5 indicating neither overbought nor oversold conditions — simply a stock in consolidation. The other is a company whose data center revenue has more than quintupled in a year, whose margins are at record levels, and whose management is deploying $14 billion in fresh buyback authority.

The market capitalization of €173.02 billion suggests investors have already priced in a substantial portion of the AI storage story. Whether the analyst day on August 13 can bridge the gap between the near-term pricing concerns and the longer-term structural opportunity may well determine which of these two narratives wins out over the coming months. For a stock trading at roughly half its 52-week high with a consensus target implying nearly 83 percent upside, the stakes of that presentation are considerable.