⚠ Locking In Supply at the Top of a CycleHigh threat

Sandisk (SNDK) — threat to the moat

Locking in supply at a cyclical peak while the partnership commits $31 billion to new capacity is two bets in opposite directions.

The whole book shares a single vintage, and it is the top of the cycle.

Two bets in opposite directionsNBMs assumeContracted volume beats spot exposureSigned duringGross margin 26.2% to 84.6% in five quartersReported January 2026Sandisk seeking a 100% NAND price riseMeanwhile, with KioxiaOver $31bn of new capacity through 2032New Kitakami fabAbout $11.3bnSandisk funds49.9% to 50.0% of venture capital investmentSandisk concedes NBMs do not eliminate demand, market or execution risk.
Locking in supply at a peak while funding the capacity that ends peaks is two positions the same company holds at once.

The five NBMs announced in April 2026, the five that followed by August, and the two worth $31.3 billion signed after the year end were all agreed inside the steepest price increase in NAND's history — a period in which Sandisk's gross margin went from 26.2% to 84.6% in five quarters and reports had the company seeking a 100% price increase for the new year.1

That timing shapes what the contracts can be. A buyer signing a multi-year volume commitment in a shortage is buying insurance against not getting product, and is willing to accept terms it would refuse in a glut. A seller signing the same contract is locking in volume at prices it may not see again. Both parties are making a bet about the future price, from opposite sides, at the moment the price is most extreme.

The specific hazard is not that the contracts are bad. It is that a book assembled entirely at a cyclical peak is untested in the only condition that matters. Sandisk's argument is that NBMs "reduce certain elements of industry cyclicality" — and it immediately concedes that they "do not eliminate the risks associated with customer demand, market conditions, or operational execution."2

Meanwhile the industry is adding the capacity that ends shortages: Sandisk and Kioxia have committed to over $31 billion of new Japanese capacity through 2032.3

The test is a downturn, and there has not been one since these were written. Watch what happens to contracted volumes the first quarter spot prices fall.

References
  1. ReportedThe five NBMs announced in April 2026, the five that followed by August, and the two worth $31.3 billion signed after the year end were all agreed inside the steepest price increase in NAND's history — a period in which Sandisk's gross margin went from 26.2% to 84.6% in five quarters and reports had the company seeking a 100% price increase for the new year. That timing shapes what the contract...
    TrendForce coverage of the Kioxia-Sandisk alliance in the AI NAND market, January 2026. Data from TrendForce shows that in Q3 2025 Samsung led with a 32.3% NAND market share, followed by SK hynix at 19.3%, Kioxia at 15.3% — surpassing Micron — and Sandisk at 12.4%. Sandisk and Kioxia have maintained a partnership spanning over 25 years, and even after Western Digital spun off Sandisk in 2025 the collaboration has strengthened; the two operate the world's largest NAND flash production sites in Japan, including the Yokkaichi and Kitakami fabs. On the technology front they co-developed BiCS FLASH 3D NAND, now in its eighth generation at 218 layers, with production of the tenth generation at over 300 layers set to begin in 2026 and Kioxia planning to repurpose its recently opened Kitakami K2 fab for the new node; BiCS8's 218-layer TLC 3D NAND features 35% higher cell current, 60% faster NAND I/O and a 50% boost in bit density through CMOS directly bonded to array and On Pitch SGD technology. Through the joint ventures the two share the costs of expensive semiconductor equipment and R&D, achieving economies of scale to compete with the South Korean memory giants. There is a clear split in market focus: Kioxia mainly supplies NAND to major Japanese and global electronics makers, while Sandisk commands the consumer storage segment and holds a strong position in enterprise SSDs across North America and overseas markets; despite deep integration on the manufacturing side, the two continue to compete directly in channels and branded end products. ETNews reported that Sandisk planned a 100% NAND price hike in the new year, and Kioxia's market value topped 10 trillion yen on 27 January 2026, just over a year after its December 2024 IPO. — 2025-2026 · publ. 2026-01-29 · source ↗
  2. ReportedSandisk's argument is that NBMs "reduce certain elements of industry cyclicality" — and it immediately concedes that they "do not eliminate the risks associated with customer demand, market conditions, or operational execution." Meanwhile the industry is adding the capacity that ends shortages: Sandisk and Kioxia have committed to over $31 billion of new Japanese capacity through 2032.
    Kioxia and Sandisk, joint announcement of 27 August 2026: the two companies will invest over $31 billion, approximately 5 trillion yen, through 2032 in the ongoing buildout of infrastructure at the Yokkaichi Plant and the Kitakami Plant along with related infrastructure and technology, extending their leadership in the memory industry. The investments are contingent upon government support and are described as aligned with the economic policy goals of the Takaichi administration in supporting a strategically important sector. Kioxia chief executive Hiroo Ota said the joint investment further strengthens the longstanding partnership with Sandisk and underscores Kioxia's commitment to contributing to the advancement of an AI-driven society; Sandisk chief executive David Goeckeler said that for decades Sandisk and Kioxia have jointly developed world-class NAND flash memory technology. — August 2026 · publ. 2026-08-27 · source ↗
  3. ReportedMeanwhile the industry is adding the capacity that ends shortages: Sandisk and Kioxia have committed to over $31 billion of new Japanese capacity through 2032. The test is a downturn, and there has not been one since these were written.
    Kioxia and Sandisk, joint announcement of 27 August 2026: the two companies will invest over $31 billion, approximately 5 trillion yen, through 2032 in the ongoing buildout of infrastructure at the Yokkaichi Plant and the Kitakami Plant along with related infrastructure and technology, extending their leadership in the memory industry. The investments are contingent upon government support and are described as aligned with the economic policy goals of the Takaichi administration in supporting a strategically important sector. Kioxia chief executive Hiroo Ota said the joint investment further strengthens the longstanding partnership with Sandisk and underscores Kioxia's commitment to contributing to the advancement of an AI-driven society; Sandisk chief executive David Goeckeler said that for decades Sandisk and Kioxia have jointly developed world-class NAND flash memory technology. — August 2026 · publ. 2026-08-27 · source ↗
Sources
Generated September 23, 2026