Sandisk Corp

Business Overview

Sandisk Corporation is a company specializing in NAND flash-based storage solutions, spun off from Western Digital (WDC) on 2025-02-21 and independently listed on NASDAQ as 'SNDK' on 2025-02-24. Its main product lines are SSDs (client and enterprise data center), removable cards, embedded flash, USB drives, and wafers/components.

Most NAND flash memory is sourced through a joint venture (JV) with Kioxia (formerly Toshiba Memory), co-producing BiCS FLASH (3D NAND) at the Yokkaichi and Kitakami plants in Japan. On 2026-01-29 the JV agreement was extended five years through 2034-12-31, with $1.165B to be paid in installments from 2026 to 2029 as consideration for manufacturing services and supply assurance.

Trailing Four-Quarter Revenue Trend

Quarterly revenue rose from Q1 $2.31B → Q2 $3.03B → Q3 $5.95B, a 2.6x increase over three quarters. Q3 GAAP net income was $3,615M (diluted EPS $23.03), and data-center revenue grew +645% year-over-year (+233% QoQ). The company guided next-quarter revenue to $7.75-8.25B and Non-GAAP diluted EPS to $30.00-33.00.

FY2025 (2024-06-29 to 2025-06-27) posted an operating loss of $(1,377)M, including a $1,830M goodwill impairment, and a net loss of $(1,641)M, but the company returned to profitability in FY2026 as quarterly revenue expanded sequentially. Annual results for FY2021-FY2023 and quarterly detail prior to FY2025 could not be cross-checked against primary sources and are not available.

Valuation (Factual Multiples)

Trailing multiples appear elevated because they are based on trailing-12-month results that include the FY2025 loss period, while Forward P/E (7.11-7.45x), which reflects the company's next-quarter guidance, falls to a level comparable to Korean peers' Forward P/E (in the 6-7x range as of mid-May 2026). A primary-source calculation aligning all multiples to a single reference date is not available, and source query dates vary between 2026-07-15 and 07-20.

Competitive Landscape

The top five companies (Samsung, SK Hynix, Kioxia, SanDisk, Micron) accounted for more than 95% of the NAND market by 2025 revenue. SanDisk ranks around fourth by share (approx. 11-12%) with a business structure concentrated in NAND alone, whereas Micron, a diversified memory company that also produces DRAM, has a much larger revenue base than SNDK. Kioxia is privately held, so a direct listed-valuation comparison is not possible. Samsung and SK Hynix have reportedly been reducing NAND wafer input and shifting production toward DRAM and HBM.

Supply and Demand

After setting an all-time high of $2,335.00 on 2026-06-25, the stock declined over three consecutive high-volume trading days from 7/15 to 7/17, a drop of approximately -42% from the all-time high. The 20-day average volume was 12,907,794 shares (as queried on 2026-07-20), and volume on the reference date (07-17) was about 1.53x that average.

Short interest as of the most recent settlement date (2026-06-30) decreased 34.0% from the prior period (10,911,306 → 7,197,631 shares, per FINRA settlement-date data). Institutional ownership differs by measurement date: 87.8% per the official 13F aggregation (as of 2025-09-30) versus 78.46% per a real-time estimated snapshot (queried 2026-07-20). The options market shows mixed short- and long-term positioning: Put/Call by volume is 0.76 (call-favoring) while Put/Call by open interest is 1.38 (put-favoring). Given U.S. market structure, daily trading-flow data by investor type (foreign/institutional/retail), margin balances, and dark-pool share are not publicly disclosed and are not available.

Governance & Disclosures

Western Digital's flash business was spun off on 2025-02-21 and independently listed on NASDAQ as 'SNDK' on 2025-02-24 (distributed at 1 SNDK share per 3 WDC shares, with WDC starting with a 19.9% residual stake). WDC subsequently divested its residual stake in two debt-for-equity exchanges with creditors on 2025-06-09 and 2026-02-18, reducing its stake to 1,038,681 shares (0.7%) as of 2026-03-31.

The board comprises seven outside directors including David V. Goeckeler (Chairman and CEO), per the 2025-10-07 DEF 14A. Combined holdings of all directors and officers (12 individuals) total 310,256 shares, under 1% of shares outstanding. Most Form 4 filings over the trailing three months (2026-04-20 to 07-20) were automatic dispositions for tax withholding on RSU vesting (Code F); discretionary dispositions (Code S) by Sayiner, Pokorny, Ilkbahar, and Shek were each small trades under 5,000 shares, with no indication of large-scale selling. The company has no dividend history, and on 2026-04-30 the board approved a $6B share buyback program (funded from operating cash flow, with no purchase obligation).

Macro Environment

The key macro variables governing SNDK's earnings are the sharp rise in NAND contract prices and storage demand from AI data centers, which together drove +645% YoY growth in data-center revenue in FY2026 Q3. With international revenue at 81~86% of the total (FY2025 10-K), the company has structural sensitivity to currency and trade conditions, though industry-specific factors currently appear to dominate.

Recent News Timeline

An upcoming FY2026 Q4 and full-year earnings release has been reported for 2026-08-05 (primary confirmation via the company's official IR calendar is not yet complete), and no reports of company-specific earnings or guidance deterioration directly linked to the 2026-07-17 decline have been identified.

Risk Factors

• Industry cyclicality — memory market prices fluctuate sharply with supply-demand imbalances, and a high fixed-cost business structure amplifies swings in operating income.
• Supply chain — production is concentrated in a single joint venture with Kioxia (Yokkaichi and Kitakami plants), creating significant exposure to partnership or production disruptions.
• Geopolitical — sales and manufacturing operations in China through Unis Venture expose the company to U.S.-China trade tensions; in 2026 a related issue coincided with a -5.4% share-price decline (exact date not available).
• Spin-off related — further disposal of WDC's residual stake (0.7% as of 2026-03-31) could create share overhang, though the remaining stake is small.
• Share-price volatility — after a sharp rise in H1 2026, the stock fell approximately 26~29% during the week of 2026-07-13 to 07-17, reflecting high volatility.
• Competition — factors that could reshape the competitive landscape include Chinese memory maker CXMT's large listing planned for 2026-07-27 and the possibility that Samsung and SK Hynix could reverse their production shifts.

Not available: the full original list of 10-K risk factors (based on secondary citations), specific terms of the Kioxia JV agreement, and cybersecurity/intellectual-property risk factors.