Sandisk Corporation (NASDAQ:SNDK) saw its shares soar 12.4% during Thursday's regular U.S. trading session, adding approximately $33.5 billion to its market capitalization. The flash-storage leader spearheaded a broader rally in memory stocks, with market participants now focusing on two pivotal events in August that could determine whether the surge is supported by solid contract earnings or merely fueled by artificial intelligence momentum. Shares were trading at $1,940.86 around 14:49 EDT.
The sharp rebound comes just two sessions after a 7.3% decline triggered by AI-related concerns that rattled chip stocks and dragged down the PHLX semiconductor index. Thursday's recovery shifts the spotlight back to NAND flash memory—the storage chips used in solid-state drives that retain data without power—and raises the question of whether Sandisk can convert tight supply into sustainable profits as pricing pressures ease.
Sandisk outperformed its storage and memory peers during the session, topping both chip sector counterparts and major market indices. Micron Technology (NASDAQ:MU) rose 7.1%, Western Digital Corp. (NASDAQ:WDC) gained 6.7%, and Seagate Technology Holdings (NASDAQ:STX) added 5.7%. The iShares Semiconductor ETF (NASDAQ:SOXX) climbed 4.6%, while the Invesco QQQ Trust (NASDAQ:QQQ) and SPDR S&P 500 ETF Trust (NYSEARCA:SPY) posted more modest gains of 1.7% and 0.8%, respectively.
The key narrative is Sandisk's widening gap with its peers. While Micron, Western Digital, and Seagate all participated in the storage rally, Sandisk's surge was more than double that of the semiconductor ETF. The company has emerged as the preferred vehicle for investors seeking direct exposure to NAND and a pipeline of long-term supply agreements.
Wedbush Securities analyst Matt Bryson maintained his "outperform" rating on Sandisk, citing "strong end-market dynamics" and firm pricing for chips and SSDs. Bernstein's Mark Newman also reiterated an "outperform" rating with a $3,000 price target, highlighting supply deals tied to AI data center demand for both Sandisk and Micron, according to Investor's Business Daily.
Sandisk set its near-term calendar on Thursday, announcing plans to report fiscal Q4 and full-year 2026 results on August 5, with a conference call at 1:30 p.m. Pacific. An Investor Day is scheduled for August 13 at 9 a.m. Eastern, featuring CEO David Goeckeler, CFO Luis Visoso, and other executives to discuss the business and outlook. Investors are bracing for tough comparisons, as the April quarter leaned heavily on data-center sales and what management now calls New Business Model (NBM) agreements—multi-year supply contracts designed to smooth price and earnings volatility.
Key metrics underscore the stakes. Fiscal Q3 revenue hit $5.95 billion, up 97% from Q2, with data-center revenue surging 233% sequentially to $1.47 billion. Sandisk closed three NBM deals in Q3 and projects two more in Q4. The company guided fiscal Q4 revenue between $7.75 billion and $8.25 billion, with non-GAAP EPS of $30-$33. Valuing Sandisk is complex: the stock trades at 67.4 times trailing earnings, but using the midpoint of Q4 non-GAAP EPS guidance annualized, the multiple drops to 15.4. On an annualized Q4 revenue basis, it trades at 9.5 times. August will test whether Q4 represents a peak or a floor.
Technological advancements support the premium. Sandisk announced on July 2 that it is sampling BiCS10 1Tb TLC 3D NAND, a stacked chip that improves bit density by 59% over BiCS8 and boosts interface speed by 33%. CTO Alper Ilkbahar described NAND as "mission-critical" for performance, efficiency, and scale in modern workloads.
However, risks remain. If NAND contract prices soften, AI storage buyers delay, or the Investor Day provides limited detail on contract terms and enforcement, the annualized EPS argument could unravel quickly. Goeckeler told Reuters last quarter that Sandisk aims to escape the "boom-bust cycle" through deals with price floors, ceilings, and customer commitments. The July 7 selloff suggests investors are not yet fully convinced. For now, traders are acting as if Sandisk's contracts can smooth the cycle—a thesis that cannot be proven in a single trading day. The earnings report on August 5 will provide initial clues, but the full story will unfold by August 13.
