SK Hynix Capacity Additions Threaten Sandisk's Pricing Power

What happened

Sandisk's recent stock surge has been fueled by a NAND flash supply shortage that enabled a 248% year-over-year increase in average selling prices per gigabyte, even as unit volumes stayed flat. However, SK Hynix has announced plans to bring additional NAND capacity online, directly targeting the same shortage that has underpinned Sandisk's pricing leverage. This industry development challenges the core assumption of sustained tightness through 2027 that many investors have baked into Sandisk's elevated valuation. While Sandisk has secured long-term contracts with customer advances, those agreements still carry termination risk and do not insulate the company from a broader pricing correction if supply normalizes. The news adds weight to the bear case in our rating framework, which sees a 30% probability of ASP reset and a fair value near $1,400.

Implication

SK Hynix's capacity plans are a direct threat to the supply tightness that has driven Sandisk's earnings and stock price. If additional industry supply materializes earlier than the late-2027/2028 timeline assumed by many, Sandisk's ASP-driven earnings could revert rapidly, compressing margins and free cash flow. The stock's 74.6x trailing P/E offers no margin of safety against even a moderate ASP decline, especially given that unit volumes are not growing. Investors should closely monitor contract liability balances and any disclosures of customer volume reductions, which would signal that the new contracting model is failing to protect pricing. We recommend trimming positions above $2,400 and waiting for an attractive entry near $1,600, with a re-assessment window of 3-6 months to gauge actual supply additions.

Thesis delta

The investment thesis shifts from a sustained pricing power story to one where the duration of the shortage is increasingly contested. The key variable is now how quickly competitor capacity can close the supply gap, which we had previously assumed would not happen before late-2027. This news brings forward the risk of ASP normalization and reduces the probability of the bull case.