While the broader technology sector faced a brutal sell-off on Tuesday, shareholders of Sandisk (NASDAQ: SNDK) had reason to celebrate. The memory chip supplier defied the market downturn, surging 7.9% to close at $446.42 and securing its position as the top performer within the S&P 500 index for the day.
Sandisk’s stock performance continues to astound. Year-to-date in 2026, the shares have skyrocketed 88%. Since its spinoff from Western Digital last February, the cumulative gain exceeds a staggering 1,100%. According to Dow Jones Market Data, among current S&P 500 constituents, only Carvana has posted a similar one-month gain of 88% or more back in January 2023, though it wasn’t part of the index at that time.
The rapid ascent has left sell-side analysts scrambling to keep up. Citi made a catch-up move on Monday, reiterating its Buy rating on the stock and significantly raising its price target to $490 from $280. The firm argues that demand for memory and data storage remains robust. Furthermore, the long-term industry shift from training artificial intelligence models to the inference phase—applying those models to real-world data—is seen as a sustained tailwind. Coupled with constrained supply, Citi believes Sandisk is in a perfect position to expand its profit margins.
In a report, Citi analyst Asiya Merchant noted, “The company continues to see unconstrained demand in the mid-20s% growth rate.” She added that Sandisk is “making no changes to its supply decisions in the current dynamic environment, instead striving for a balance of short-term profitability and long-term positioning.” However, Citi also cautioned that given the stock’s meteoric rise over the past year, other memory and storage names like hard disk drive makers Western Digital and Seagate Technology, which have more room to grow amidst rising drive prices, might present better investment opportunities.
Despite this, Sandisk remains on Citi’s short-term upside watchlist ahead of its quarterly earnings report scheduled for January 29. The bank expects the favorable supply-demand dynamics fueling the stock’s popularity to persist through 2027.
The recent AI frenzy is a primary catalyst. Nvidia’s newly announced Rubin chip is a significant factor, with the company detailing a memory storage platform for the chip at CES earlier this month. This development is expected to significantly increase flash storage requirements for AI infrastructure. Commenting on this, Morningstar analyst William Kerwin stated, “More SSD demand for these systems would imply even tighter supply than we have right now, further boosting SNDK’s pricing.”
Yet, the explosive rally has pushed valuations to daunting levels. Sandisk currently trades at a price-to-earnings multiple of 170. While Wall Street forecasts adjusted earnings to grow at an annual rate of 79% through fiscal 2029, this premium pricing embeds exceedingly high expectations. Analysts at JPMorgan view the supply-constrained environment as a potential sign that the current memory cycle is nearing its peak. Supporting a more cautious outlook, Grand View Research projects NAND flash memory sales to grow at about 14% annually through 2030—far slower than current Wall Street estimates for Sandisk. This disconnect suggests the market may eventually assign the stock a lower earnings multiple.
Fundamentally, Sandisk has strengthened its market position. Its joint venture with Japanese flash manufacturer Kioxia provides cost efficiencies and supply chain security, with shared R&D and capex for process technology and wafer production. As the world’s fifth-largest NAND flash supplier, Sandisk gained a percentage point of market share in the first half of 2025, with momentum expected to continue. Its solid-state drives (SSDs) are now under test by two hyperscalers, with a third hyperscaler and major storage OEMs planning to begin testing this year.
For fiscal Q1 2026 (ended October 2025), Sandisk reported revenue and earnings that beat estimates. Revenue jumped 23% year-over-year to $2.3 billion, driven by strong growth in data center and edge (PCs & mobile devices) segments. However, non-GAAP earnings fell 33% to $1.22 per diluted share. A key positive is management’s guidance for non-GAAP earnings to nearly triple sequentially in Q2. The massive build-out of AI data centers, which require fast and power-efficient flash storage, has created an unprecedented memory supply shortage, leading to substantially higher prices across the sector, including NAND flash.
